path: root/floppy/doc/INTERRUP.B

Interrupt List, part 2 of 18
Copyright (c) 1989-1999,2000 Ralf Brown
--------V-10BF--CX0000-----------------------
INT 10 - Athena Digital HGCIBM.COM - INSTALLATION CHECK
	AH = BFh
	CX = 0000h (???)
Return: CX = 0202h
	DL = ??? (internal data, possibly version number)
--------b-10BF00-----------------------------
INT 10 - VIDEO - Compaq Extensions - SELECT EXTERNAL MONITOR
	AX = BF00h
Return: nothing
Desc:	specify that the external monitor become the active monitor
Note:	all registers preserved and the internal monitor is blanked
SeeAlso: AX=BF01h,AX=BF12h,AH=12h/BL=35h
--------b-10BF01-----------------------------
INT 10 - VIDEO - Compaq Extensions - SELECT INTERNAL MONITOR
	AX = BF01h
Return: nothing
Desc:	specify that the internal monitor become the active monitor
Note:	all registers preserved and the external monitor is blanked
SeeAlso: AX=BF00h,AX=BF12h,AH=12h/BL=35h
--------b-10BF02-----------------------------
INT 10 - VIDEO - Compaq Extensions - SET MASTER MODE OF CURRENT CONTROLLER
	AX = BF02h
	BH = master mode
	    04h CGA
	    05h EGA
	    07h MDA
Return: nothing
SeeAlso: AX=BF03h
--------b-10BF03BX0000-----------------------
INT 10 - VIDEO - Compaq Extensions - GET ENVIRONMENT
	AX = BF03h
	BX = 0000h
Return: BH = active monitor
	    (00h = external, 01h = internal, 03h both, 04h neither)
	BL = master mode (see #00211)
	CH = ASIC type and version
	    00h (reserved, very early Compaq VGCs)
	    31h if QVision VGA
	CL = switchable VDU modes supported (see #00212)
	DH = internal monitor type (see #00213)
	DL = external monitor type (see #00213)
SeeAlso: AX=1A00h,AX=BF00h,AX=BF01h,AX=BF02h,AX=BF11h

(Table 00211)
Values for Compaq video master mode:
 00h	switchable VDU not present
 04h	CGA
 05h	EGA
 07h	MDA
 08h	switchable LCD controller present
 09h	plasma VGA
 0Ah	TFT (active-matrix) VGA

Bitfields for Compaq switchable VDU modes support:
Bit(s)	Description	(Table 00212)
 0	CGA supported
 1,2	reserved (1)
 3	MDA supported
 4	BitBLT engine available
 5	132-column support availble
 6	640x480x256 mode available
 7	8-bit DAC mode available

(Table 00213)
Values for Compaq monitor type:
 00h	none
 01h	dual-mode monitor
 02h	5153 RGB monitor (RGBI 16-color)
 03h	Compaq Color monitor
 04h	640x400 flat panel (Plasma CGA)
 05h	VGC monochrome
 06h	VGC color
 07h	8-level mono LCD VGA (internal)
	1024x768 mono VGA (external)
 08h	16-level mono plasma VGA (internal)
	1024x768 color VGA (external)
 09h	4-level mono LCD CGA
 0Ah	16-level mono LCD VGA
 0Bh	active-matrix color VGA
 0Ch	active-matrix mono VGA
 0Dh	STN color VGA
--------b-10BF04-----------------------------
INT 10 - VIDEO - Compaq Extensions - SET MODE SWITCH DELAY
	AX = BF04h
	BH = new state of delay (00h enabled, 01h disabled)
Return: nothing
Note:	the 1993/04/08 sytem ROM appears to use BL instead of BH; a future
	  version of the list will provide more definite information
SeeAlso: AX=BF05h
--------b-10BF05-----------------------------
INT 10 - VIDEO - Compaq Extensions - ENABLE/DISABLE DISPLAY
	AX = BF05h
	BH = new state of video
	    00h off
	    01h on
Return: nothing
Note:	the 1993/04/08 sytem ROM appears to use BL instead of BH; a future
	  version of the list will provide more definite information
SeeAlso: AH=12h/BL=36h,AX=BF04h
--------b-10BF06-----------------------------
INT 10 - VIDEO - Compaq SLT/286 - READ GRAY SCALE TABLE
	AX = BF06h
	CL = address to be read from gray scale table
Return: AL = bit 3-0 - Value read from gray scale table
	CL = address to be read from gray scale table
SeeAlso: AH=12h/BL=33h,AX=BF07h
--------b-10BF07-----------------------------
INT 10 - VIDEO - Compaq SLT/286 - WRITE GRAY SCALE TABLE
	AX = BF07h
	CH = value to write to gray scale table
	CL = address to be written to gray scale table
Return: nothing
SeeAlso: AX=BF06h,AX=BF08h
--------b-10BF08-----------------------------
INT 10 - VIDEO - Compaq SLT/286 - WRITE COLOR MIX REGISTERS
	AX = BF08h
	CH = bits 7-4 green weight
	     bits 3-0 blue weight
	CL = bits 7-4 unused
	     bits 3-0 red weight
Return: nothing
SeeAlso: AH=12h/BL=33h,AX=BF07h
--------b-10BF09-----------------------------
INT 10 - VIDEO - Compaq Extensions - TURN ON REVERSE VIDEO
	AX = BF09h
Return: CF clear
Notes:	sets bit 6 of port 03CEh index 81h; in some cases also sets index 84h
	  to 6Fh and index 83h to 04h
	supported by at least the QVision board and the LTE Lite ROM BIOS
SeeAlso: AX=BF0Ah,AX=BF0Bh
--------b-10BF0A-----------------------------
INT 10 - VIDEO - Compaq Extensions - TURN OFF REVERSE VIDEO
	AX = BF0Ah
Return: CF clear
Notes:	clears bit 6 of port 03CEh index 81h; in some cases also sets index 84h
	  to 80h and index 83h to FBh
	supported by at least the QVision board and the LTE Lite ROM BIOS
SeeAlso: AX=BF09h,AX=BF0Bh
--------b-10BF0B-----------------------------
INT 10 - VIDEO - Compaq Extensions - CHECK WHETHER VIDEO REVERSED
	AX = BF0Bh
Return: CF clear
	AX = state (0000h normal video, 0001h reverse video)
Note:	supported by at least the QVision board and the LTE Lite ROM BIOS
SeeAlso: AX=BF09h,AX=BF0Ah
--------b-10BF0C-----------------------------
INT 10 - VIDEO - Compaq Extensions - SET DAC 6-BIT MODE
	AX = BF0Ch
Return: CF clear
Desc:	specify that video DAC registers use only six bits of color info
Note:	supported by at least the QVision board and the SystemPro XL ROM BIOS
SeeAlso: AX=BF0Dh,AX=BF0Eh
--------b-10BF0D-----------------------------
INT 10 - VIDEO - Compaq Extensions - SET DAC 8-BIT MODE
	AX = BF0Dh
Return: CF clear
Desc:	specify that video DAC registers use all eight bits of color info
Note:	supported by at least the QVision board and the SystemPro XL ROM BIOS
SeeAlso: AX=BF0Ch,AX=BF0Eh
--------b-10BF0E-----------------------------
INT 10 - VIDEO - Compaq Extensions - CHECK DAC 6-BIT/8-BIT mode
	AX = BF0Eh
Return: CF clear
	AL = DAC mode
	    00h in 6-bit mode
	    01h in 8-bit mode
Note:	supported by at least the QVision board and the SystemPro XL ROM BIOS
SeeAlso: AX=BF0Ch,AX=BF0Dh
--------b-10BF0F-----------------------------
INT 10 - VIDEO - Compaq Extensions - SET HIGH ADRESS MAP REGISTER
	AX = BF0Fh
	BX = high address map location in megabytes, or
	    0000h to disable high address map, or
	    FFFFh to let ROM configure high address map
Return: CF clear
	AX = previous value of high address map register
Notes:	supported by at least the QVision board and the SystemPro XL and LTE
	  Lite ROM BIOSes
SeeAlso: AX=BF10h
--------b-10BF10-----------------------------
INT 10 - VIDEO - Compaq Extensions - GET HIGH ADDRESS MAP REGISTER
	AX = BF10h
Return: CF clear
	AX = current value of high address map register
Notes:	supported by at least the QVision board and the SystemPro XL and LTE
	  Lite ROM BIOSes
	the Compaq QVision documentation (October 1993) says the value is
	  returned in BX, but this appears to be one of many typos
SeeAlso: AX=BF0Fh
--------b-10BF11-----------------------------
INT 10 - VIDEO - Compaq Extensions - GET EXTENDED ENVIRONMENT
	AX = BF11h
Return: AL = BFh if supported
	    CF clear
	    ES:DI -> ASCII signature "COMPAQ"
	    ES:SI -> advanced functionality table (see #00214)
Note:	supported by at least the QVision board and the LTE Lite and ProSignia
	  ROM BIOSes
SeeAlso: AX=1A00h,AX=BF03h

Bitfields for Compaq advanced video functionality:
Bit(s)	Description	(Table 00214)
 31	future graphics extensions (reserved, set to 0)
 30-16	reserved
 15-12	available video memory in 256K blocks, less one (0000 = 256K, etc.)
 11-8	reserved
 7	QVision modes supported
 6	Advanced VGA modes supported
 5	Accelerated VGA modes supported
 4	standard VGA modes supported
 3-2	reserved
 1	132-column modes supported
 0	reserved
--------b-10BF12-----------------------------
INT 10 - VIDEO - Compaq Extensions - NEW ACTIVE MONITOR
	AX = BF12h
	BH reserved
	BL = function mask (see #00215)
Return: CF clear
Notes:	this function is a NOP if the VGA subsystem is inactive or the current
	  Display Combination Code is 10h or higher
	supported by at least the QVision board and the LTE Lite and ProSignia
	  ROM BIOSes
SeeAlso: AX=BF01h,AX=BF02h,#00733

Bitfields for function mask:
Bit(s)	Description	(Table 00215)
 7	command mode
	if set, bits 1 and 0 make the monitor active when set
	if clear, bits 1 and 0 toggle the monitor's state when set
 6-2	reserved
 1	internal monitor
 0	external monitor
--------b-10BF13-----------------------------
INT 10 - VIDEO - Compaq QVision - GAMMA CORRECTION
	AX = BF13h
	BL = subfunction
	    00h load gamma correction table for true-color mode
		DS = BIOS data segment
	    01h set palette RAM bypass
	BH = 00h
Return: nothing
Note:	these functions must be called after a video mode set, and are in
	  effect only for the current video mode
SeeAlso: #00733
--------V-10BFA0BXADAD-----------------------
INT 10 - VIDEO - Compaq ADAPT.COM - INSTALLATION CHECK
	AX = BFA0h
	BX = ADADh
Return: AX = BDBDh if newer ADAPT.COM installed
	    BX = BCD version (BH = major, BL = minor)
	    CL = ???
	    CH = ???
	    DL = ???
	AX = ADADh if older version of ADAPT.COM installed
Program: ADAPT is Compaq's Advanced Display Attribute Programming Tool, an
	  optionally-resident utility for setting display colors and cursor
	  size; when resident, it also includes a screen blanker
SeeAlso: AX=BFA1h,AX=BFA2h,AX=DFA5h
Index:	screen saver;ADAPT
--------V-10BFA1-----------------------------
INT 10 - VIDEO - Compaq ADAPT.COM - GET ???
	AX = BFA1h
Return: AX = BDBEh if supported
	    CH = current value of ???
	    DL = current value of ???
SeeAlso: AX=BFA0h,AX=BFA2h
--------V-10BFA2-----------------------------
INT 10 - VIDEO - Compaq ADAPT.COM - SET ???
	AX = BFA2h
	CH = new value for ???
	DL = new value for ???
Return: AX = BDBEh if supported
SeeAlso: AX=BFA0h,AX=BFA1h
--------A-10C0-------------------------------
INT 10 - CU Writer v1.4 - GO TO TEXT ROW AND COLUMN
	AH = C0h
	???
Return: ???
SeeAlso: AH=B1h,AH=C1h,AH=C2h,AH=C3h,AH=C4h
--------V-10C000-----------------------------
INT 10 - S3 SpeedUp v3.00+ - INSTALLATION CHECK
	AX = C000h
Return: AX = FFFFh if installed
	    DX = version number (binary, DH=major, DL=minor)
	    BX = resident code segment
Program: S3SPDUP is a freeware TSR by Dietmar Meschede to improve the speed
	  of chained video modes (both VESA and VGA Mode 13) on S3-chipset
	  video cards
SeeAlso: AX=C001h,AX=C002h,AX=C003h,AX=D000h"S3VBE"
--------V-10C001-----------------------------
INT 10 - S3 SpeedUp v3.00+ - GET ACTIVE OPTIONS
	AX = C001h
Return: AX = FFFFh if function supported
	    BX = currently active options (see #00216)
SeeAlso: AX=C000h,AX=C002h,AX=C003h

Bitfields for S3SpeedUp options:
Bit(s)	Description	(Table 00216)
 0	speed up banked VESA modes
 1	speed up 320x200 VGA mode 13
SeeAlso: #00222
--------V-10C002-----------------------------
INT 10 - S3 SpeedUp v3.00+ - SET ACTIVE OPTIONS
	AX = C002h
	BX = new value for active options (see #00216)
Return: AX = FFFFh if function supported
SeeAlso: AX=C000h,AX=C001h,AX=C003h,AX=D003h"S3VBE"
--------V-10C003-----------------------------
INT 10 - S3 SpeedUp v3.10+ - GET FLAGS
	AX = C003h
Return: AX = FFFFh if function supported
	    BX = flags
		bit 0: SpeedUp is active
		bit 1: Windows run after SpeedUp
SeeAlso: AX=C000h,AX=C001h,AX=C002h,AX=D005h"S3VBE"
--------V-10C004-----------------------------
INT 10 - S3 SpeedUp v3.10+ - RESERVED FUNCTIONS
	AX = C004h-C0FFh
Return: AX = 5555h
SeeAlso: AX=C000h
--------A-10C1-------------------------------
INT 10 - CU Writer v1.4 - OUTPUT TEXT
	AH = C1h
	???
Return: ???
SeeAlso: AH=C0h,AH=C2h,AH=C3h,AH=C4h
--------A-10C2-------------------------------
INT 10 - CU Writer v1.4 - REVERSE TEXT
	AH = C2h
	???
Return: ???
SeeAlso: AH=C0h,AH=C1h,AH=C3h,AH=C4h
--------A-10C3-------------------------------
INT 10 - CU Writer v1.4 - TEXT BAR
	AH = C3h
	???
Return: ???
SeeAlso: AH=C0h,AH=C1h,AH=C4h
--------A-10C4-------------------------------
INT 10 - CU Writer v1.4 - TEXT MENU
	AH = C4h
	???
Return: ???
SeeAlso: AH=C0h,AH=C1h,AH=C3h,AH=D0h
--------V-10CB00-----------------------------
INT 10 - UNCHAIN - SAVE CURRENT VGA REGISTERS
	AX = CB00h
Note:	combined with AX=CB06h, this function permits the use of video mode
	  13h together with the VGA's unchained mode
SeeAlso: AX=CB06h,AX=CBFFh
--------V-10CB01-----------------------------
INT 10 - UNCHAIN - UPDATE PAGE 1 OFFSET
	AX = CB01h
	BX = offset of page 1
Return: nothing
Desc:	inform UNCHAIN of the location of video page 1 in video memory; the
	  default is 0000h
SeeAlso: AX=CB02h,AX=CB03h,AX=CB04h,AX=CBFFh
--------V-10CB02-----------------------------
INT 10 - UNCHAIN - UPDATE PAGE 2 OFFSET
	AX = CB02h
	BX = offset of page 2
Return: nothing
Desc:	inform UNCHAIN of the location of video page 2 in video memory; the
	  default is 3E80h (16000, for 320x200)
SeeAlso: AX=CB00h,AX=CB01h,AX=CB03h,AX=CB04h
--------V-10CB03-----------------------------
INT 10 - UNCHAIN - UPDATE PAGE 3 OFFSET
	AX = CB03h
	BX = offset of page 3
Return: nothing
Desc:	inform UNCHAIN of the location of video page 3 in video memory; the
	  default is 7D00h (32000, for 320x200)
SeeAlso: AX=CB01h,AX=CB02h,AX=CB04h
--------V-10CB04-----------------------------
INT 10 - UNCHAIN - UPDATE PAGE 4 OFFSET
	AX = CB04h
	BX = offset of page 4
Return: nothing
Desc:	inform UNCHAIN of the location of video page 4 in video memory; the
	  default is BB80h (48000, for 320x200)
SeeAlso: AX=CB01h,AX=CB02h,AX=CB03h,AX=CB05h
--------V-10CB05-----------------------------
INT 10 - UNCHAIN - SAVE PALETTE
	AX = CB05h
Return: nothing
SeeAlso: AX=CB00h,AX=CB06h
--------V-10CB06-----------------------------
INT 10 - UNCHAIN - RESTORE VGA REGISTERS
	AX = CB06h
Return: nothing
SeeAlso: AX=CB00h,AX=CB05h,AX=CBFFh
--------V-10CBFF-----------------------------
INT 10 - UNCHAIN - INSTALLATION CHECK
	AX = CBFFh
Return: AX = CCBBh if installed
Program: UNCHAIN is a TSR by Colin Buckley which permits use of Borland
	  development tools with Mode X video in the absence of a second
	  monitor
SeeAlso: AX=CB00h,AX=CB01h,AX=CB06h
--------V-10CC00-----------------------------
INT 10 - VIDEO - UltraVision - GET STATUS (INSTALLATION CHECK)
	AX = CC00h
	SI = magic value 0000h (if checking version)
Return: CX = product signature
	    ABCDh UltraVision
	    5546h ('UF') UltraFont
	AL = Ultravision extensions
	    00h enabled
	    FFh disabled
	AH = card designator
	BX:00F0h -> palette values (for compatibility with NEWFONT)
	DX = support for high resolution modes
	    00h not active
	    01h active
	SI = UltraVision version number (v1.2+), high byte=major,low byte=minor
	    unchanged for versions <1.2
Note:	UltraFont is a simplified version of UltraVision for Toshiba;
	  only the signature in CX and the status in AL will be returned
SeeAlso: AX=CC01h,AX=CC02h
--------V-10CC01-----------------------------
INT 10 - VIDEO - UltraVision - DISABLE EXTENSIONS
	AX = CC01h
Return: nothing
Notes:	subsequent BIOS calls will be passed through to previous handler
	should be followed immediately by mode set to restore normal EGA/VGA
	  state
SeeAlso: AX=CC02h
--------V-10CC02-----------------------------
INT 10 - VIDEO - UltraVision - ENABLE EXTENSIONS
	AX = CC02h
Return: nothing
Note:	should be followed immediately by mode set to restore previous
	  UltraVision state
SeeAlso: AX=CC01h
--------U-10CCAB-----------------------------
INT 10 - HiFont - INSTALLATION CHECK
	AX = CCABh
Return: AX = ABCCh
Program: HiFont is a 8x19 font driver for standard VGA by Solar Designer
--------V-10CD00-----------------------------
INT 10 - VIDEO - UltraVision - LOAD ULTRAVISION PALETTE (color EGA,VGA)
	AX = CD00h
	CL = palette table number (01h-07h for v1.x, 01h-0Fh for v2+)
	DS:DX -> 16-byte palette register list (colors for registers 00h-0Fh)
Return: nothing
Notes:	if palette locking is in effect for the current mode, the new colors
	  will be displayed immediately; otherwise, the system reverts to the
	  default palette
	palette table 0 is reserved for the default palette and cannot be set
	UltraVision always sets the border color to black
SeeAlso: AX=CD01h,AX=CD02h
--------V-10CD01-----------------------------
INT 10 - VIDEO - UltraVision - SET PALETTE LOCKING STATUS (color EGA,VGA)
	AX = CD01h
	CL = palette locking value
	    00h none
	    01h text modes only (02h,03h)
	    FFh all modes (all standard color text and graphics modes)
Return: nothing
Notes:	intended for video modes with 16 or fewer colors
SeeAlso: AX=1000h,AX=1002h,AX=CD00h,AX=CD03h
--------V-10CD02-----------------------------
INT 10 - VIDEO - UltraVision - GET ULTRAVISION PALETTE (EGA,VGA)
	AX = CD02h
Return: CL = palette table number
	DS:DX -> 17-byte palette register list (see #00217)
	DS:SI -> current font names table (see #00218,#00219)
Note:	only the font names are valid on monochrome EGA systems
SeeAlso: AX=1009h,AX=CD00h

Format of UltraVision palette register list:
Offset	Size	Description	(Table 00217)
 00h 16 BYTEs	colors for palette registers 00h through 0Fh
 10h	BYTE	border color

Format of UltraVision v2+ current font names table:
Offset	Size	standard EGA	HiRes EGA	VGA	(Table 00218)
 00h  8 BYTEs	N/A		F19 font	F20 font
 08h  8 BYTEs	F14 font	F14 font	F14 font
 10h  8 BYTEs	N/A		F11 font	F10 font
 18h  8 BYTEs	F8 font		F8 font		F8 font

Format of UltraVision v1.x current font names table:
Offset	Size	HiRes EGA	(Table 00219)
 00h  8 BYTEs	F19/F14 font
 08h  8 BYTEs	F11/F8 font
--------V-10CD03-----------------------------
INT 10 - VIDEO - UltraVision - GET PALETTE LOCKING STATUS (color EGA,VGA)
	AX = CD03h
Return: CL = palette locking value
	    00h none
	    01h text modes only
	    FFh all modes
SeeAlso: AX=CD01h
--------V-10CD04-----------------------------
INT 10 - VIDEO - UltraVision - GET UltraVision TEXT MODE (EGA,VGA)
	AX = CD04h
Return: AL = mode number (see #00220)
SeeAlso: AH=0Fh,AX=CC00h,AH=CDh

(Table 00220)
Values for UltraVision video mode number:
 11h	80x25
 12h	80x43, 80x50
 13h	80x34, 80x36
 14h	80x60, 80x63
 19h	94x25
 1Ah	94x43, 94x50
 1Bh	94x36
 1Ch	94x63
 21h	108x25
 22h	108x43, 108x50
 23h	107x34, 108x36
 24h	108x60, 108x63
 31h	120x25
 32h	120x43, 120x50
 33h	132x25
 34h	132x44, 132x50
 39h	120x36
 3Ah	120x63
 3Bh	132x36
 3Ch	132x60
Index:	video modes;UltraVision
--------V-10CD05-----------------------------
INT 10 - VIDEO - UltraVision - SET CURSOR TYPE (EGA,VGA)
	AX = CD05h
	CL = type
	    00h line cursor
	    FFh box cursor
Return: nothing
Note:	sets default cursor type for text-based programs
SeeAlso: AH=01h,AX=CD06h
--------V-10CD06-----------------------------
INT 10 - VIDEO - UltraVision - GET CURSOR TYPE (EGA,VGA)
	AX = CD06h
Return: CL = type
	    00h line cursor
	    FFh box cursor
SeeAlso: AH=03h,AX=CD05h
--------V-10CD07-----------------------------
INT 10 - VIDEO - UltraVision v1.2+ - SET UNDERLINE STATUS (EGA,VGA)
	AX = CD07h
	CL = hardware underline status (see #00221)
	BL = foreground color for normal text (FFh = current)
	BH = foreground color for bright text (FFh = current)
Return: CL = hardware underline status
	BL = current foreground color for normal text
	BH = current foreground color for bright text
Notes:	when underline or strikeout is enabled in color text modes, the
	  specified colors will be assigned temporarily to colors 01h and 09h,
	  allowing affected text to match non-underlined text.	The color
	  remapping uses values from the current onscreen palette regardless
	  of the palette locking status (see AX=CD01h)
	specify the standard colors (BL=01h,BH=09h) to enable underline or
	  strikeout without color remapping
SeeAlso: AX=CD08h

(Table 00221)
Values for hardware underline status:
 00h	off (color systems only)
 01h	underline below characters
 02h	strike through characters
--------V-10CD08-----------------------------
INT 10 - VIDEO - UltraVision v1.2+ - GET UNDERLINE STATUS (EGA,VGA)
	AX = CD08h
Return: CL = hardware underline status (see #00221)
	BL = foreground color for normal text
	BH = foreground color for bright text
Note:	only CL is valid on monochrome EGA systems
SeeAlso: AX=CD07h
--------V-10CD0F-----------------------------
INT 10 - VIDEO - UltraVision - GET POINTER TO ??? (EGA,VGA)
	AX = CD0Fh
Return: DS:DI -> pointer to ???
Note:	This gets called by DR DOS "Panther" SECURITY.	SECURITY also issues a
	  number of calls to the other UltraVision functions in the AH=CCh and
	  AH=CDh range, and carefully checks signatures.
SeeAlso: AX=1100h,AX=1103h
--------V-10CD10-----------------------------
INT 10 - VIDEO - UltraVision - LOAD USER FONT (EGA,VGA)
	AX = CD10h
	BH = bytes per character (08h,0Ah,0Bh,0Eh,13h,14h)
	CX = ABCDh load 9xN alternate font (v2+)
	   else number of characters to load
		DX = character offset into font table
		DS:SI -> 8-byte ASCII font name
	ES:BP -> font definitions
Return: AX = FFFFh if invalid font parameters
Notes:	loads the designated characters into UltraVision's resident font area
	should be followed by a video mode set to reload character generator
SeeAlso: AX=1100h,AX=1103h
--------V-10CD-------------------------------
INT 10 - VIDEO - UltraVision - SET ULTRAVISION TEXT MODE (EGA,VGA)
	AH = CDh
	AL = text mode number (see #00220)
Return: AX = CDCDh if invalid mode
SeeAlso: AX=CD04h
--------A-10D0-------------------------------
INT 10 - CU Writer v1.4 - LOAD PICTURE
	AH = D0h
	???
Return: ???
SeeAlso: AH=B0h"CU Writer",AH=C4h
--------V-10D0-------------------------------
INT 10 U - VIDEO - HP 100LX/200LX - SET ZOOM MODE
	AH = D0h
	AL = zoom mode
	    02h 80x25 mono
	    03h 80x25 color
	    80h 64x18 mono
	    81h 64x18 color
	    82h 40x25 mono
	    83h 40x25 color
	    84h 40x16 mono
	    85h 40x16 color
Return: nothing
Note:	zoom mode can only be changed within zoom modes of the same color
	  scheme; if needed, set to mono/color with AH=00h,AL=02h/03h; with
	  mono video modes AL=07h or AL=21h only 80x25 and 40x16 will work
	the current zoom mode is stored in the BIOS data area at 0040h:009Fh
SeeAlso: AH=D1h,AH=D4h
--------V-10D000-----------------------------
INT 10 - S3VBE/Core2.0 v3.00+ - INSTALLATION CHECK
	AX = D000h
Return: AX = FFFFh if installed
	    BX = resident code segment
	    DX = version (binary, DH = major, DL = minor)
Program: S3VBE/Core2.0 is a freeware TSR by Dietmar Meschede to provide
	  VESA 2.0 services on S3-based video cards with VESA 1.2 BIOS
SeeAlso: AX=D001h"S3VBE",AX=D002h"S3VBE",AX=D003h"S3VBE",AX=D005h"S3VBE"
--------V-10D001-----------------------------
INT 10 - S3VBE/Core2.0 v3.00+ - GET ACTIVE OPTIONS
	AX = D001h
Return: AX = FFFFh if supported
	    BX = currently active options (see #00222)
SeeAlso: AX=D000h"S3VBE",AX=D002h"S3VBE"

Bitfields for S3VBE options:
Bit(s)	Description	(Table 00222)
 0	VESA VBE v2.0 extensions enabled
 1	linear frame buffer enabled
 2	low-resolution video mode support enabled
 8	never clear video memory during VBE mode set (v3.10+)
---debug options---
 12	report VBE version 1.2 (v3.10+)
 13	always fail AX=4F0Ah (v3.10+)
 14	don't copy video mode list (v3.12+)
SeeAlso: #00216
--------V-10D002-----------------------------
INT 10 - S3VBE/Core2.0 v3.00+ - SET ACTIVE OPTIONS
	AX = D002h
	BX = new active options (see #00222)
Return: AX = FFFFh if supported
SeeAlso: AX=D000h"S3VBE",AX=D001h"S3VBE"
--------V-10D003-----------------------------
INT 10 U - S3VBE/Core2.0 v3.10+ - GET VBE/Core CAPABILITIES
	AX = D003h
Return: AX = FFFFh if supported
	    BX = capabilities
		bit 0: SpeedUp = activate/deactivate linear addressing at
			A0000h for VBE functions 04h/05h
SeeAlso: AX=D000h"S3VBE",AX=D001h"S3VBE",AX=D004h"S3VBE",AX=D005h"S3VBE"
--------V-10D004-----------------------------
INT 10 U - S3VBE/Core2.0 v3.10+ - ACTIVATE SPEED-UP
	AX = D004h
Return: AX = FFFFh if supported
	BX = status
	    0000h SpeedUp activated
	    0001h SpeedUp not possible (wrong memory organization for mode)
	    0002h SpeedUp not possible (linear frame buffer active)
Note:	called by S3 SpeedUp (see AX=C000h)
SeeAlso: AX=C000h"SpeedUp",AX=D000h"S3VBE",AX=D003h"S3VBE",AX=D005h"S3VBE"
--------V-10D005-----------------------------
INT 10 U - S3VBE/Core2.0 v3.10+ - DEACTIVATE SPEED-UP
	AX = D005h
Return: AX = FFFFh if supported
	BX = status
	    0000h SpeedUp deactivated
	    0001h SpeedUp not possible (wrong memory organization for mode)
	    0002h SpeedUp not possible (linear frame buffer active)
Notes:	called by S3 SpeedUp (see AX=C000h)
	functions 06h-FFh (e.g. AX=D006h-D0FFh) are considered reserved by
	  v3.10+ and return AX=5555h
SeeAlso: AX=C000h"SpeedUp",AX=D000h"S3VBE",AX=D003h"S3VBE",AX=D004h"S3VBE"
--------V-10D1-------------------------------
INT 10 U - VIDEO - HP 100LX/200LX - INTERNAL - ???
	AH = D1h
	AL = 01h
Return: ???
Note:	called by AH=D0h
SeeAlso: AH=D0h,AH=D4h
--------V-10D4-------------------------------
INT 10 U - VIDEO - HP 100LX/200LX - INTERNAL - ???
	AH = D4h
	AL = 29h
Return: ???
Note:	called by AH=D0h
SeeAlso: AH=D0h,AH=D1h
--------V-10D5-------------------------------
INT 10 - Netroom SCRNCLK - ???
	AH = D5h
	???
Return: ???
Program: SCRNCLK is a "cloaked" screen accelerator included with Netroom
--------t-10DAAD-----------------------------
INT 10 - TSRUNIT v1.10 - INSTALLATION CHECK
	AX = DAADh
	BX = check signature (different for each TSR)
	CX = 0000h
Return: CX = return signature (nonzero) if installed
	    ES = program segment prefix
Program: TSRUNIT is a Turbo Pascal unit for creating TSRs by Nir Sofer
--------V-10DFA5-----------------------------
INT 10 U - VIDEO - Compaq ADAPT.COM - GET ??? DATA AREA
	AX = DFA5h
Return: AX = BDBFh if supported
	    ES:DI -> ??? data area
	    BX = ES
SeeAlso: AX=BFA0h
--------V-10EE-------------------------------
INT 10 - VIDEO - IBM "Private" Function
	AH = EEh
SeeAlso: INT 13/AH=FFh"IBM"
--------V-10EF-------------------------------
INT 10 - VIDEO - MSHERC.COM - GET VIDEO ADAPTER TYPE AND MODE
	AH = EFh
Return: DL = video adapter type
	    00h original Hercules
	    01h Hercules Plus	 (port 03BAh reads x001xxxxx)
	    02h Hercules InColor (port 03BAh reads x101xxxxx)
	    FFh not a Hercules-compatible card (port 03BAh bit 7 not pulsing)
	DH = memory mode byte
	    00h "half" mode
	    01h "full" mode
	    FFh not a Hercules-compatible card
Program: MSHERC.COM/QBHERC.COM is a support program for the Microsoft Quick
	  languages which makes their graphics libraries compatible with a
	  Hercules card by adding video modes 08h and 88h, and supporting
	  text in the new graphics modes.
Notes:	while in mode 08h or 88h, INT 10 supports the Hercules card much like
	  a CGA.
	MSHERC performs an installation check by setting DL=FFh and testing
	  whether it has been changed on return, which causes it to reinstall
	  itself when no HGC is present (or HGC emulation has temporarily been
	  disabled); a better installation check would be to use DX=80FFh and
	  check whether DX has been changed
	reportedly returns DH=00h on some not-entirely-Hercules-compatible
	  cards
Index:	installation check;MSHERC
--------V-10F0-------------------------------
INT 10 - EGA Register Interface Library - READ ONE REGISTER
	AH = F0h
	BL = register number
	BH = 00h
	DX = group index (see #00223)
Return: BL = data
Note:	the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
	  compatibility box, and others; it is used for software virtualization
	  of write-only registers on an EGA video adapter, so that multiple
	  programs may peacefully coexist without clobbering each other's
	  display settings
SeeAlso: AH=F1h"EGA",AH=F2h"EGA",AH=FAh"EGA",INT 2F/AX=BC00h

(Table 00223)
Values for group index:
 Pointer/data chips
 00h	CRT Controller (25 reg) 3B4h mono modes, 3D4h color modes
 08h	Sequencer (5 registers) 3C4h
 10h	Graphics Controller (9 registers) 3CEh
 18h	Attribute Controller (20 registers) 3C0h
 Single registers
 20h	Miscellaneous Output register 3C2h
 28h	Feature Control register (3BAh mono modes, 3DAh color modes)
 30h	Graphics 1 Position register 3CCh
 38h	Graphics 2 Position register 3CAh
--------V-10F0-------------------------------
INT 10 - VHRBIOS.SYS - INSTALLATION CHECK
	AH = F0h
Return: BX = 4F4Bh ('OK')
Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
	  black&white A4/portrait monitor
SeeAlso: AH=F1h"VHRBIOS.SYS",AH=F2h"VHRBIOS.SYS",AH=F4h"VHRBIOS.SYS"
SeeAlso: AH=96h"VHRBIOS.SYS"
--------V-10F1-------------------------------
INT 10 - EGA Register Interface Library - WRITE ONE REGISTER
	AH = F1h
	DX = group index (see #00223)
	    if single register:
		BL = value to write
	    otherwise
		BL = register number
		BH = value to write
Return: BL = data
Note:	the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
	  compatibility box, and others
SeeAlso: AX=7F05h,AH=F0h"EGA",AH=F3h"EGA",AH=FAh"EGA"
--------V-10F1-------------------------------
INT 10 - VHRBIOS.SYS - SET REVERSE VIDEO
	AH = F1h
	AL = new video state 
	    (bit 5 set for black text on white, clear for white on black)
Return: ???
Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
	  black&white A4/portrait monitor
SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F3h"VHRBIOS.SYS"
--------V-10F2-------------------------------
INT 10 - EGA Register Interface Library - READ REGISTER RANGE
	AH = F2h
	CH = starting register number
	CL = number of registers (>1)
	DX = group index (00h,08h,10h,18h) (see #00223)
	ES:BX -> buffer, CL bytes
Return: nothing
Note:	the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
	  compatibility box, and others
SeeAlso: AH=F0h"EGA",AH=F3h"EGA",AH=FAh"EGA"
--------V-10F2-------------------------------
INT 10 - VHRBIOS.SYS - ???
	AH = F2h
Return: ???
Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
	  black&white A4/portrait monitor
SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F4h"VHRBIOS.SYS"
--------V-10F3-------------------------------
INT 10 - EGA Register Interface Library - WRITE REGISTER RANGE
	AH = F3h
	CH = starting register
	CL = number of registers (>1)
	DX = group index (00h,08h,10h,18h) (see #00223)
	ES:BX -> buffer, CL bytes
Return: nothing
Note:	the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
	  compatibility box, and others
SeeAlso: AX=7F05h,AH=F1h"EGA",AH=F2h"EGA",AH=F4h"EGA"
--------V-10F3-------------------------------
INT 10 - VHRBIOS.SYS - SWITCH BETWEEN DUAL MONITORS???
	AH = F3h
Return: ???
Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
	  black&white A4/portrait monitor
SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F4h"VHRBIOS.SYS",AH=F6h"VHRBIOS.SYS"
--------V-10F4-------------------------------
INT 10 - EGA Register Interface Library - READ REGISTER SET
	AH = F4h
	CX = number of registers to read (>1)
	ES:BX -> table of register records (see #00224)
Return: register values in table filled in
Note:	the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
	  compatibility box, and others
SeeAlso: AH=F0h"EGA",AH=F2h"EGA",AH=F5h"EGA"

Format of EGA RIL entries in table of register records:
Offset	Size	Description	(Table 00224)
 00h	WORD	group index
		Pointer/data chips
		   00h CRTC (3B4h mono modes, 3D4h color modes)
		   08h Sequencer 3C4h
		   10h Graphics Controller 3CEh
		   18h Attribute Controller 3C0h
		Single registers
		   20h Miscellaneous Output register 3C2h
		   28h Feature Control register (3BAh mono modes, 3DAh color)
		   30h Graphics 1 Position register 3CCh
		   38h Graphics 2 Position register 3CAh
 02h	BYTE	register number (0 for single registers)
 03h	BYTE	register value
--------V-10F4-------------------------------
INT 10 - VHRBIOS.SYS - GET VERSION
	AH = F4h
Return: AX = driver version (AH = major, AL = minor)
Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
	  black&white A4/portrait monitor
SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F5h"VHRBIOS.SYS"
--------V-10F5-------------------------------
INT 10 - EGA Register Interface Library - WRITE REGISTER SET
	AH = F5h
	CX = number of registers to write (>1)
	ES:BX -> table of records (see #00224)
Return: nothing
Note:	the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
	  compatibility box, and others
SeeAlso: AX=7F05h,AH=F1h"EGA",AH=F3h"EGA",AH=F4h"EGA"
--------V-10F5-------------------------------
INT 10 - VHRBIOS.SYS - GET VENDOR ID
	AH = F5h
Return: AXBX = vendor ID (4D44h:5349h = 'MDSI' for Micro Display Systems Inc.)
Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
	  black&white A4/portrait monitor
SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F4h"VHRBIOS.SYS",AH=F6h"VHRBIOS.SYS"
--------V-10F6-------------------------------
INT 10 - EGA Register Interface Library - REVERT TO DEFAULT REGISTERS
	AH = F6h
Return: nothing
Note:	provided by the Microsoft Mouse driver, OS/2 compatibility box, and
	  others
SeeAlso: AH=F5h"EGA",AH=F7h"EGA"
--------V-10F6-------------------------------
INT 10 - VHRBIOS.SYS - GET INFO
	AH = F6h
	AL = what to get
	    00h device driver state
		Return: AX = device driver state
	    01h video mode info
		Return: AL = video mode
			DH = screen height in rows
			DL = screen width in columns
Program: VHRBIOS.SYS is a driver for the Micro Display Systems "TheGenius"
	  black&white A4/portrait monitor
SeeAlso: AH=F0h"VHRBIOS.SYS",AH=F4h"VHRBIOS.SYS",AH=96h"VHRBIOS.SYS
--------V-10F7-------------------------------
INT 10 - EGA Register Interface Library - DEFINE DEFAULT REGISTER TABLE
	AH = F7h
	DX = port number
	   Pointer/data chips
	      00h CRTC (3B4h mono modes, 3D4h color modes)
	      08h Sequencer 3C4h
	      10h Graphics Controller 3CEh
	      18h Attribute Controller 3C0h
	   Single registers
	      20h Miscellaneous Output register 3C2h
	      28h Feature Control register (3BAh mono modes, 3DAh color modes)
	      30h Graphics 1 Position register 3CCh
	      38h Graphics 2 Position register 3CAh
	ES:BX -> table of one-byte entries, one byte to be written to each
		 register
Return: nothing
Note:	the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
	  compatibility box, and others
SeeAlso: AH=F0h"EGA",AH=F6h"EGA"
--------V-10FA--BX0000-----------------------
INT 10 - EGA Register Interface Library - INTERROGATE DRIVER
	AH = FAh
	BX = 0000h
Return: BX = 0000h if RIL driver not present
	ES:BX -> EGA Register Interface version number, if present:
	    byte 0 = major release number
	    byte 1 = minor release number
Note:	the RIL is provided by EGA.SYS, the Microsoft Mouse driver, the OS/2
	  compatibility box, and others
SeeAlso: AH=F0h"EGA",AH=F6h"EGA",INT 2F/AX=BC00h
--------K-10FA-------------------------------
INT 10 - FASTBUFF.COM - INSTALLATION CHECK
	AH = FAh
Return: AX = 00FAh if installed
	    ES = segment of resident code
Program: FASTBUFF.COM is a keyboard speedup/screen blanking utility by David
	  Steiner
Index:	screen saver;FASTBUFF
--------V-10FE-------------------------------
INT 10 - TopView - GET SHADOW BUFFER
	AH = FEh
	ES:DI -> assumed video buffer
		B800h:0000h color text/CGA graphics, B000h:0000h mono text,
		  or A000h:0000h EGA/VGA graphics (RSIS environments only)
Return: ES:DI -> actual video buffer for calling process
Desc:	Determine the address of the virtual screen to which the program
	  should write instead of the actual video memory; this permits
	  programs to be multitasked without interfering with each other's
	  output, and allows memory managers to move the video memory to
	  permit larger programs to be loaded.
Notes:	if no multitasker or RSIS-compliant environment is installed, ES:DI is
	  returned unchanged; RSIS is the Relocated Screen Interface
	  Specification
	for display pages other than 0, use AH=05h and AH=0Fh to determine
	  whether a particular page exists
	TopView requires a call to AH=FFh to notify it that the screen has
	  changed; DESQview will check for changes itself until the first call
	  to AH=FFh
SeeAlso: AH=05h,AX=5201h,AH=FFh,INT 15/AX=1024h,INT 21/AH=2Bh"DESQview"
SeeAlso: INT 21/AH=ECh"DoubleDOS"
--------V-10FF-------------------------------
INT 10 - TopView - UPDATE SCREEN FROM SHADOW BUFFER
	AH = FFh
	CX = number of consecutive changed characters
	ES:DI -> first changed character in shadow buffer
Return: nothing
Notes:	avoid CX=0000h
	DESQview will discontinue the automatic screen updating initiated by
	  AH=FEh after this call
	not supported (ignored) by DESQview/X 1.0x
SeeAlso: AH=93h,AH=FEh
--------E-10FF-------------------------------
INT 10 - DJ GO32.EXE 80386+ DOS extender - VIDEO EXTENSIONS
	AH = FFh
	AL = video mode (see #00225)
Program: GO32.EXE is a DOS extender included as part of the 80386 port of the
	  GNU C/C++ compiler by DJ Delorie and distributed as DJGPP
SeeAlso: AH=00h,INT 21/AH=FFh"GO32"

(Table 00225)
Values for GO32 video mode number:
 00h	80x25 text
 01h	default text
 02h	CXxDX text
 03h	biggest text
 04h	320x200 graphics
 05h	default graphics
 06h	CXxDX graphics
 07h	biggest non-interlaced graphics
 08h	biggest graphics
Index:	video modes;GO32
--------V-10FF-------------------------------
INT 10 - VIDEO - Oak VGA BIOS v1.02+ - SET EMULATION
	AH = FFh
	AL = emulation
	    43h ('C') CGA emulation
	    45h ('E') EGA emulation
	    4Dh ('M') Hercules emulation
	    56h ('V') VGA emulation
	ES:DI -> signature string "Calamity"
Return: VGA switched to suggested mode
SeeAlso: AH=00h,AX=007Fh/BH=00h,AX=007Fh/BH=02h,AX=5F01h
--------R-10FF00-----------------------------
INT 10 - CARBON COPY PLUS v5.0 - CHECK IF CC CONNECTED TO CCHELP
	AX = FF00h
Return: BL = state
	    00h not connected
	    01h connected
SeeAlso: AX=FF01h,AX=FF02h
--------R-10FF01-----------------------------
INT 10 - CARBON COPY PLUS v5.0 - DISCONNECT AND RESET LINE
	AX = FF01h
Return: nothing
SeeAlso: AX=FF00h,AX=FF02h
--------R-10FF02-----------------------------
INT 10 - CARBON COPY PLUS v5.0 - GET LAST PHONE NUMBER DIALED
	AX = FF02h
Return: ES:DI -> ASCIZ phone number
SeeAlso: AX=FF00h,AX=FF01h
--------C-11---------------------------------
INT 11 - CPU-generated (80486+) - ALIGNMENT CHECK
Desc:	automatically generated by the CPU when the AC flag is set, the current
	  privilege level is 3, and a misaligned memory access (WORD not on an
	  even address or DWORD not on a multiple of 4) is made
Note:	not all V86 monitors allow the AC flag to be set, such as Turbo
	  Debugger 386
SeeAlso: INT 12"CPU"
--------B-11---------------------------------
INT 11 - BIOS - GET EQUIPMENT LIST
Return: (E)AX = BIOS equipment list word (see #00226,#03215 at INT 4B"Tandy")
Note:	since older BIOSes do not know of the existence of EAX, the high word
	  of EAX should be cleared before this call if any of the high bits
	  will be tested
SeeAlso: INT 4B"Tandy 2000",MEM 0040h:0010h

Bitfields for BIOS equipment list:
Bit(s)	Description	(Table 00226)
 0	floppy disk(s) installed (number specified by bits 7-6)
 1	80x87 coprocessor installed
 3-2	number of 16K banks of RAM on motherboard (PC only)
	number of 64K banks of RAM on motherboard (XT only)
 2	pointing device installed (PS)
 3	unused (PS)
 5-4	initial video mode
	00 EGA, VGA, or PGA
	01 40x25 color
	10 80x25 color
	11 80x25 monochrome
 7-6	number of floppies installed less 1 (if bit 0 set)
 8	DMA support installed (PCjr, Tandy 1400LT)
	DMA support *not* installed (Tandy 1000's)
 11-9	number of serial ports installed
 12	game port installed
 13	serial printer attached (PCjr)
	internal modem installed (PC/Convertible)
 15-14	number of parallel ports installed
---Compaq, Dell, and many other 386/486 machines--
 23	page tables set so that Weitek coprocessor addressable in real mode
 24	Weitek math coprocessor present
---Compaq Systempro---
 25	internal DMA parallel port available
 26	IRQ for internal DMA parallel port (if bit 25 set)
	0 = IRQ5
	1 = IRQ7
 28-27	parallel port DMA channel
	00 DMA channel 0
	01 DMA channel 0 ???
	10 reserved
	11 DMA channel 3
Notes:	Some implementations of Remote (Initial) Program Loader (RPL/RIPL)
	  don't set bit 0 to indicate a "virtual" floppy drive, although the
	  RPL requires access to its memory image through a faked drive A:.
	  This may have caused problems with releases of DOS 3.3x and earlier,
	  which assumed A: and B: to be invalid drives then and would discard
	  any attempts to access these drives.	Implementations of RPL should
	  set bit 0 to indicate a "virtual" floppy.
	The IBM PC DOS 3.3x-2000 IBMBIO.COM contains two occurences of code
	  sequences like:
	    INT 11h
	    JMP SHORT skip
	    DB 52h,50h,53h; "RPS"
	    skip: OR AX,1
	    TEST AX,1
	  While at the first glance this seems to be a bug since it just
	  wastes memory and the condition is always true, this could well be
	  a signature for an applyable patch to stop it from forcing AX bit 0
	  to be always on. MS-DOS IO.SYS does not contain these signatures,
	  however.
BUGs:	Some old BIOSes didn't properly report the count of floppy drives
	  installed to the system.  In newer systems INT 13h/AH=15h can be
	  used to retrieve the number of floppy drives installed.
	Award BIOS v4.50G and v4.51PG erroneously set bit 0 even if there are
	  no floppy drives installed; use two calls to INT 13/AH=15h to
	  determine whether any floppies are actually installed
SeeAlso: INT 12"BIOS",#03215 at INT 4B"Tandy 2000"
--------d-11----SI6A6A-----------------------
INT 11 - Columbia Data Products Standard Device Level Protocol (SDLP) 1.6
	SI = 6A6Ah
	AH = command (see #00227)
	AL = SCSI Addressing (see #00228)
Return: CF clear if successful
	    DI = 6A6Ah if AH=01h on entry (maybe for all functions???)
	    AH = ??? for command 01h
	CF set on error
	    AL = error code
SeeAlso: INT 21/AX=4402h"ASPI"

(Table 00227)
Values for SDLP command:
 00h	SDLP initialization
 01h	SDLP System Identify
 02h	simple read sectors
 03h	simple write sectors
 04h	simple verify sectors/seek to sector
 05h	get device size/type
 06h	ready unit
 07h	format unit
 08h	diagnostics
 09h	rewind
 0Ah	erase
 0Bh	write filemarks
 0Ch	space
 0Dh	prevent/allow media removal
 0Eh	load/unload media
 0Fh	reserved - returns good status
 10h	set block size
 11h	write setmark
 12h	set error level
 13h	get address of Request Sense Buffer
 14h	get SDLP error via Request Sense
 F0h	Vendor Unique Function (WD7000-FASST2 only)
 FDh	reset current SCSI HAC
 FEh	get/set current SCSI HAC
 FFh	execute SCSI command

Bitfields for SDLP SCSI addressing:
Bit(s)	Description	(Table 00228)
 7-6	Host Adapter
 5-3	SCSI Target ID
 2-0	SCSI Target LUN (logical unit number)
--------V-110225BX6900-----------------------
INT 11 - Blank-It Screen Blanker - INSTALLATION CHECK
	AX = 0225h
	BX = 6900h
Return: BL = 23h
	ES:DI -> ASCIZ "BLNKIT"
Program: Blank-It is a resident screen blanker by Rhode Island Soft Systems,
	  Inc.
SeeAlso: AX=0225h/BX=6902h,AX=0225h/BX=6908h,AX=0225h/BX=6909h,INT 14/AX=AA01h
Index:	screen saver;Blank-It
--------V-110225BX6901-----------------------
INT 11 - Blank-It Screen Blanker - SET TIMEOUT FOR SCREEN BLANKING
	AX = 0225h
	BX = 6901h
	CX = timeout in timer ticks (18.2/second) or 0000h to disable timeout
	     largest value is 59 minutes (FBACh or 64428)
Return: CF clear if successful
	    DI = 6A6Ah (possibly also 6A6Ah for all following functions)
	    AH = ???
	CF set on error
	    AL = error code
SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6904h
Index:	screen saver;Blank-It
--------V-110225BX6902-----------------------
INT 11 - Blank-It Screen Blanker - ENABLE THE SOFTWARE
	AX = 0225h
	BX = 6902h
Return: CF clear if successful
	CF set on error
	    AL = error code
SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6903h
Index:	screen saver;Blank-It
--------V-110225BX6903-----------------------
INT 11 - Blank-It Screen Blanker - DISABLE THE SOFTWARE
	AX = 0225h
	BX = 6903h
Return: CF clear if successful
	CF set on error
	    AL = error code
SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6902h
Index:	screen saver;Blank-It
--------V-110225BX6904-----------------------
INT 11 - Blank-It Screen Blanker - GET BLANKING TIMEOUT
	AX = 0225h
	BX = 6904h
Return: CF clear if successful
	    BX = timeout (see AX=0225h/BX=6901h)
	CF set on error
	    AL = error code
SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6901h
Index:	screen saver;Blank-It
--------V-110225BX6905-----------------------
INT 11 - Blank-It Screen Blanker - ENABLE WINDOWS COMPATIBILITY MODE
	AX = 0225h
	BX = 6905h
Return: CF clear if successful
	CF set on error
	    AL = error code
SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6906h
Index:	screen saver;Blank-It
--------V-110225BX6906-----------------------
INT 11 - Blank-It Screen Blanker - DISABLE WINDOWS COMPATIBILITY MODE
	AX = 0225h
	BX = 6906h
Return: CF clear if successful
	CF set on error
	    AL = error code
Program: Blank-It is a resident screen blanker by Rhode Island Soft Systems,
	  Inc.
SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6905h
Index:	screen saver;Blank-It
--------V-110225BX6907-----------------------
INT 11 - Blank-It Screen Blanker - UNBLANK THE SCREEN
	AX = 0225h
	BX = 6907h
Return: CF clear if successful
	CF set on error
	    AL = error code
SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6908h
Index:	screen saver;Blank-It
--------V-110225BX6908-----------------------
INT 11 - Blank-It Screen Blanker - BLANK THE SCREEN
	AX = 0225h
	BX = 6908h
Return: CF clear if successful
	CF set on error
	    AL = error code
SeeAlso: AX=0225h/BX=6900h,AX=0225h/BX=6907h
Index:	screen saver;Blank-It
--------V-110225BX6909-----------------------
INT 11 - Blank-It Screen Blanker - SET HOTKEY FOR MANUAL BLANKING
	AX = 0225h
	BX = 6909h
	CL = key scan code (see #00229)
Return: CF clear if successful
	CF set on error
	    AL = error code
Program: Blank-It is a resident screen blanker by Rhode Island Soft Systems,
	  Inc.
SeeAlso: AX=0225h/BX=6900h
Index:	screen saver;Blank-It|hotkeys;Blank-It

(Table 00229)
Values for Blank-It hotkey scan code:
 00h	No hot key
 1Dh	Left CTRL
 2Ah	Left Shift
 36h	Right Shift
 57h	F11
 58h	F12
SeeAlso: #00006
--------G-1105D7-----------------------------
INT 11 CU - Borland C++ IDE - INSTALLED CALLOUT
	AX = 05D7h
	BX = product ID (0088h)
Note:	called by the BC++ IDE when an application calls
	  INT 12/AX=05D7h/BX=05D7h
SeeAlso: INT 12/AX=05D7h/BX=05D7h
Index:	installation check;Borland C++ IDE
--------F-1177-------------------------------
INT 11 - RainbowFAX v1.3 - SFENGINE API - OPERATIONAL CONTROL
	AH = 77h
	AL = subfunction
	    01h request SFENGINE start
		Return: AX = 0001h
	    02h check if SFENGINE started
		Return: AX = 0000h or 0001h
	    03h request SFENGINE stop
		Return: AX = 0001h
	    04h check if SFENGINE stopped
		Return: AX = 0000h or 0001h
	    05h installation check
		Return: AX = 0001h
	    06h uninstall???
		BX:DX -> return address for successful uninstall???
		Return: (at caller's address)
			AX = 0000h
	    else
		Return: AX = FFFFh (invalid subfunction)
Return: ES:DX -> ASCIZ signature string "SFAX ENGINE V1.0"
		followed by internal data area???
SeeAlso: AH=78h,AH=79h,AH=7Ah,AH=7Ch
Index:	installation check;RainbowFAX|installation check;SFENGINE
Index:	uninstall;RainbowFAX|uninstall;SFENGINE
--------F-1178-------------------------------
INT 11 - RainbowFAX v1.3 - SFENGINE API - ???
	AH = 78h
	AL = subfunction
	    01h set ???
		BX = new state for ???
		    0000h ???
		    else ???
		Return: AX = 0001h
	    02h set ???
		BX = ???
		CX = ???
		Return: AX = 0001h
	    03h set ???
		BX = new state for ???
		    0000h ???
		    else ???
		Return: AX = 0001h
	    else
		Return: AX = FFFFh (invalid subfunction)
SeeAlso: AH=77h,AH=79h,AH=7Ah,AH=7Ch
--------F-1179-------------------------------
INT 11 - RainbowFAX v1.3 - SFENGINE API - ???
	AH = 79h
	AL = subfunction
	    01h set ??? flag
		Return: AX = previous state (0000h already set, 0001h clear)
	    02h clear ??? flag (refer to subfunc 01h)
		Return: AX = 0001h
	    03h set ??? flag (different from subfn 02h or 04h)
		Return: AX = 0001h
	    04h clear ??? flag (different from subfn 02h or 03h)
		Return: AX = 0001h
	    else
		Return: AX = FFFFh (invalid subfunction)
SeeAlso: AH=77h,AH=78h,AH=7Ah,AH=7Ch
--------F-117A-------------------------------
INT 11 - RainbowFAX v1.3 - SFENGINE API - ???
	AH = 7Ah
	AL = subfunction
	    01h set ??? flag
		Return: AX = previous state (0000h already set, 0001h clear)
	    02h clear ??? flag
		Return: AX = 0001h
	    03h set ??? flag (different from subfn 02h)
		Return: AX = 0001h
	    else
		Return: AX = FFFFh (invalid subfunction)
SeeAlso: AH=77h,AH=78h,AH=79h,AH=7Ch
--------F-117C01-----------------------------
INT 11 - RainbowFAX v1.3 - SFENGINE API - SET ??? FLAG
	AX = 7C01h
Return: AX = 0001h
SeeAlso: AH=77h,AH=78h,AH=79h,AH=7Ah,AX=7C02h,AX=7C03h
--------F-117C02-----------------------------
INT 11 - RainbowFAX v1.3 - SFENGINE API - CLEAR ??? FLAG
	AX = 7C02h
Return: AX = 0001h
SeeAlso: AH=77h,AH=78h,AH=79h,AH=7Ah,AX=7C01h,AX=7C03h
--------F-117C03-----------------------------
INT 11 - RainbowFAX v1.3 - SFENGINE API - UNSUPPORTED FUNCTIONS
	AX = 7C03h-7CFFh
Return: AX = FFFFh
SeeAlso: AH=77h,AX=7C01h,AX=7C02h
--------S-11BC--DX1954-----------------------
INT 11 - BNU FOSSIL - INSTALLATION CHECK
	AH = BCh
	DX = 1954h
Return: AX = 1954h
	ES:DX -> entry point of driver (instead of INT 14)
SeeAlso: INT 14/AH=04h"FOSSIL"
--------d-11FF--SI6A6A-----------------------
INT 11 - WD7000 SDLP interface - EXECUTE GENERIC SCSI COMMAND
	AH = FFh
	SI = 6A6Ah
	AL = SCSI Addressing (see #00230)
	CX = bytes of data to be transmitted (max FFF0h)
	DH = 00h
	DL = length of SCSI Command Descriptor Block
	DS:DI -> SCSI Command Descriptor Block
	ES:BX -> data buffer
Return: CF set on error
	    AL = error code
	CF clear if successful
Note:	because of busmaster operations with WD7000FASST avoid accessing
	  video memory directly; check 386 memory manager for VDS support.
	  The WD7000XTAT works with programmed IO and does not have this
	  limitation.
SeeAlso: INT 21/AX=4402h"ASPI",INT 2F/AX=7F01h

Bitfields for SDLP SCSI addressing:
Bit(s)	Description	(Table 00230)
 2-0	SCSI Target LUN (logical unit number)
 5-3	SCSI Target ID
 7	write flag, set for write operations, clear otherwise
--------T-11FFFECXFFFE-----------------------
INT 11 - BACK&FORTH (before v1.62) API
	AX = FFFEh
	CX = FFFEh
	BX = function
	    00h installation check
		Return: AX = installation state
			    0001h BNFHIGH and BNFLOW both loaded
			    0003h only BNFHIGH loaded
			    else neither loaded
	    01h ???
		Return: DX:AX -> ???
	    02h ???
	    03h ???
	    04h ???
	    05h ??? switches current PSP segment and stack if BNFLOW has not
		    yet announced itself installed
	    06h ???
		Return: AX = ???
SeeAlso: INT 12/AX=FFFEh
Index:	installation check;BACK&FORTH
--------B-12---------------------------------
INT 12 - BIOS - GET MEMORY SIZE
Return: AX = kilobytes of contiguous memory starting at absolute address 00000h
Note:	this call returns the contents of the word at 0040h:0013h; in PC and
	  XT, this value is set from the switches on the motherboard
SeeAlso: INT 11"BIOS",INT 2F/AX=4A06h,INT 4C"Tandy 2000",MEM 0040h:0013h
--------C-12---------------------------------
INT 12 - CPU-generated (Pentium +) - MACHINE CHECK EXCEPTION
Notes:	Intel documents this interrupt as CPU model-dependent
	for current Pentium processors, the reason for the machine check
	  exception may be read from model-specific registers 00h and 01h
	  (described, for example, in Christian Ludloff's 4P package)
	for Pentium Pro/II processors,	the reason may be read from the
	  MCG_STATUS MSR (see MSR 0000017Ah)
	this exception is enabled by bit 6 of CR4
SeeAlso: INT 11"CPU",MSR 00000000h,MSR 00000001h,MSR 0000017Ah
--------K-12----CX1806-----------------------
INT 12 - KEYBUI v2.0+ - INSTALLATION CHECK
	CX = 1806h
Return: AX = kilobytes of contiguous memory starting at absolute address 00000h
	CX = 1960h if installed
Program: KEYBUI is a resident keyboard driver by Johan Zwiekhorst which allows
	  accented characters and box drawing on standard QWERTY keyboards; it
	  also provides break-to-DOS and screen blanking capabilities
SeeAlso: INT 14/AX=AA01h
Index:	screen saver;KEYBUI
--------d-12----CX1807-----------------------
INT 12 - PARKER v2.0+ - INSTALLATION CHECK
	CX = 1807h
Return: AX = kilobytes of contiguous memory starting at absolute address 00000h
	CX = 1961h if installed
Program: PARKER is an optionally-resident hard disk parking program by Johan
	  Zwiekhorst
--------G-1205D7BX05D7-----------------------
INT 12 U - Borland C++ IDE - INSTALLATION CHECK
	AX = 05D7h (1495d)
	BX = 05D7h
Note:	the BC++ IDE will call INT 11/AX=05D7h/BX=0088h if it is loaded
SeeAlso: INT 11/AX=05D7h
--------v-124350BX4920-----------------------
INT 12 C - CPI-standard virus - "FRIEND" CHECK
	AX = 4350h
	BX = 4920h
	CX = AB46h
	DX = 554Eh
Return: if friendly (not to be infected)
	    CX:DX -> ASCIZ identity code (changes yearly)
SeeAlso: INT 13/AX=EC00h"VIRUS",INT 13/AX=5001h,INT 21/AX=0B56h
--------T-12FFFECXFFFE-----------------------
INT 12 - Back&Forth v1.62+ - API
	AX = FFFEh
	CX = FFFEh
	BX = function
	    00h installation check
		Return: AX = 0001h installed
			     else  not loaded
	    01h (reserved)
	    02h build program ID list (shareware Back&Forth)
		ES:DI -> buffer of at least 100 bytes, to be filled with words
		Return: AX = number of programs defined
			ES:DI buffer filled with AX words
	    02h get memory statistics (Back&Forth Professional)
		Return: AX = available swap memory, KBytes
			BX = maximum task size, KBytes
			DX = fixed overhead per task, excluding video/macro
			      storage
	    03h switch to specified task (task need not be open yet)
		DX = two-letter program ID
		Return: AX = status
			    0000h if task undefined
			    0001h task switch will occur when safe
	    04h (reserved)
	    05h (reserved)
	    06h get version (documented only for Back&Forth Professional)
		Return: AX = version * 100 (v1.71 = 00ABh)
	    07h spawn program (Back&Forth Professional only???)
		ES:DI -> BF_SPAWN record (see #00232)
		Return: AX = status
			    0000h if no task handles free
			    0001h spawn will occur when safe
	    08h get open tasks (documented only for Back&Forth Professional)
		ES:DI -> task info buffer (see #00231,#00233)
		Return: AX = number of open tasks (max 20)
		Note:	the supplied buffer must be large enough to hold 21
			  task entries
	    09h (reserved)
	    ---Back&Forth Professional---
	    0Ah get active clipboard filename
		Return: DX:AX -> ASCIZ clipboard filename
	    0Bh get active task number
		AX = active task number (00h-13h)
		BX = number of tasks allocated
		DX = maximum number of tasks
	    0Ch (reserved)
	    0Dh (reserved)
	    0Eh (reserved)
	    0Fh stuff string into keyboard buffer
		ES:DI -> ASCIZ string to be stuffed
		Return: nothing
	    10h check if in graphics mode
		Return: AX = state
			    0000h color text mode
			    0004h mono text mode
			    FFFFh graphics mode
	    11h get Back&Forth Professional user number
		Return: AX = user number (0000h-00FFh)
	    12h switch task by task number
		DX = task number
		Return: AX = status
			    0000h attempted to switch to active task
			    0001h task switch will occur when safe
			    FFFFh invalid task number
	    13h delete (kill) task
		DX = task number
		Return: AX = status
			    0000h attempted to delete the active task
			    0001h successfully deleted
			    FFFFh invalid task number
		Note:	the active task number will change if the deleted task
			  was lower in the task list than the active task
	    14h get next available task handle
		Return:	AX = next available task handle
			    FFFFh if task table is full
Program: Back & Forth is a task switcher by Progressive Solutions, Inc.
SeeAlso: INT 11/AX=FFFEh
Index:	installation check;BACK&FORTH

Format of Back&Forth task info buffer:
Offset	Size	Description	(Table 00231)
 00h 21 BYTEs	ASCIZ task name
 15h	BYTE	hotkey shift state (as for INT 16/AH=02h)
 16h	WORD	hotkey scan code (see also #00006)
 18h	WORD	program ID
Index:	hotkeys;Back&Forth
SeeAlso: #00232,#00233

Format of Back&Forth Professional BF_SPAWN record:
Offset	Size	Description	(Table 00232)
 00h 21 BYTEs	task description
 15h	BYTE	flag: disable hotkeys
 16h	WORD	environment size in bytes
 18h	BYTE	hotkey shift flags
 19h	WORD	hotkey scancode
 1Bh	WORD	maximum number of EMS pages
 1Dh	WORD	required memory in KBytes
 1Fh  3 BYTEs	DESQview-style two-letter program ID
 22h 13 BYTEs	base name of program to be run (no path or extension)
 2Fh 66 BYTEs	directory from which to start program
 71h 66 BYTEs	initial current directory for program
SeeAlso: #00231,#00233

Format of Back&Forth Professional BF_TASK record:
Offset	Size	Description	(Table 00233)
 00h	DWORD	Unix-style task start time (seconds since 1970/1/1)
 04h 21 BYTEs	task description
 19h	DWORD	elapsed time in task (seconds)
 1Dh	WORD	task ID
 1Fh	BYTE	task hotkey keyboard flags
 20h	WORD	task hotkey scan code (see also #00006)
 22h	DWORD	time task was suspended/exited
 26h	WORD	task handle
SeeAlso: #00231,#00232
--------B-1300-------------------------------
INT 13 - DISK - RESET DISK SYSTEM
	AH = 00h
	DL = drive (if bit 7 is set both hard disks and floppy disks reset)
Return: AH = status (see #00234)
	CF clear if successful (returned AH=00h)
	CF set on error
Note:	forces controller to recalibrate drive heads (seek to track 0)
	for PS/2 35SX, 35LS, 40SX and L40SX, as well as many other systems,
	  both the master drive and the slave drive respond to the Reset
	  function that is issued to either drive
SeeAlso: AH=0Dh,AH=11h,INT 21/AH=0Dh,INT 4D/AH=00h"TI Professional"
SeeAlso: INT 56"Tandy 2000",MEM 0040h:003Eh
--------B-1301-------------------------------
INT 13 - DISK - GET STATUS OF LAST OPERATION
	AH = 01h
	DL = drive (bit 7 set for hard disk)
Return: CF clear if successful (returned status 00h)
	CF set on error
	AH = status of previous operation (see #00234)
Note:	some BIOSes return the status in AL; the PS/2 Model 30/286 returns the
	  status in both AH and AL
SeeAlso: AH=00h,INT 4D/AH=01h,MEM 0040h:0041h,MEM 0040h:0074h

(Table 00234)
Values for disk operation status:
 00h	successful completion
 01h	invalid function in AH or invalid parameter
 02h	address mark not found
 03h	disk write-protected
 04h	sector not found/read error
 05h	reset failed (hard disk)
 05h	data did not verify correctly (TI Professional PC)
 06h	disk changed (floppy)
 07h	drive parameter activity failed (hard disk)
 08h	DMA overrun
 09h	data boundary error (attempted DMA across 64K boundary or >80h sectors)
 0Ah	bad sector detected (hard disk)
 0Bh	bad track detected (hard disk)
 0Ch	unsupported track or invalid media
 0Dh	invalid number of sectors on format (PS/2 hard disk)
 0Eh	control data address mark detected (hard disk)
 0Fh	DMA arbitration level out of range (hard disk)
 10h	uncorrectable CRC or ECC error on read
 11h	data ECC corrected (hard disk)
 20h	controller failure
 31h	no media in drive (IBM/MS INT 13 extensions)
 32h	incorrect drive type stored in CMOS (Compaq)
 40h	seek failed
 80h	timeout (not ready)
 AAh	drive not ready (hard disk)
 B0h	volume not locked in drive (INT 13 extensions)
 B1h	volume locked in drive (INT 13 extensions)
 B2h	volume not removable (INT 13 extensions)
 B3h	volume in use (INT 13 extensions)
 B4h	lock count exceeded (INT 13 extensions)
 B5h	valid eject request failed (INT 13 extensions)
 B6h	volume present but read protected (INT 13 extensions)
 BBh	undefined error (hard disk)
 CCh	write fault (hard disk)
 E0h	status register error (hard disk)
 FFh	sense operation failed (hard disk)
SeeAlso: #M0022
--------B-1302-------------------------------
INT 13 - DISK - READ SECTOR(S) INTO MEMORY
	AH = 02h
	AL = number of sectors to read (must be nonzero)
	CH = low eight bits of cylinder number
	CL = sector number 1-63 (bits 0-5)
	     high two bits of cylinder (bits 6-7, hard disk only)
	DH = head number
	DL = drive number (bit 7 set for hard disk)
	ES:BX -> data buffer
Return: CF set on error
	    if AH = 11h (corrected ECC error), AL = burst length
	CF clear if successful
	AH = status (see #00234)
	AL = number of sectors transferred (only valid if CF set for some
	      BIOSes)
Notes:	errors on a floppy may be due to the motor failing to spin up quickly
	  enough; the read should be retried at least three times, resetting
	  the disk with AH=00h between attempts
	most BIOSes support "multitrack" reads, where the value in AL
	  exceeds the number of sectors remaining on the track, in which
	  case any additional sectors are read beginning at sector 1 on
	  the following head in the same cylinder; the MSDOS CONFIG.SYS command
	  MULTITRACK (or the Novell DOS DEBLOCK=) can be used to force DOS to
	  split disk accesses which would wrap across a track boundary into two
	  separate calls
	the IBM AT BIOS and many other BIOSes use only the low four bits of
	  DH (head number) since the WD-1003 controller which is the standard
	  AT controller (and the controller that IDE emulates) only supports
	  16 heads
	AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
	  than 1024 cylinders by placing bits 10 and 11 of the cylinder number
	  into bits 6 and 7 of DH
	under Windows95, a volume must be locked (see INT 21/AX=440Dh/CX=084Bh)
	  in order to perform direct accesses such as INT 13h reads and writes
	all versions of MS-DOS (including MS-DOS 7 [Windows 95]) have a bug
	  which prevents booting on hard disks with 256 heads (FFh), so many
	  modern BIOSes provide mappings with at most 255 (FEh) heads
	some cache drivers flush their buffers when detecting that DOS is
	  bypassed by directly issuing INT 13h from applications.  A dummy
	  read can be used as one of several methods to force cache
	  flushing for unknown caches (e.g. before rebooting).
BUGS:	When reading from floppies, some AMI BIOSes (around 1990-1991) trash
	  the byte following the data buffer, if it is not arranged to an even
	  memory boundary.  A workaround is to either make the buffer word
	  aligned (which may also help to speed up things), or to add a dummy
	  byte after the buffer.
	MS-DOS may leave interrupts disabled on return from this function.
	Apparently some BIOSes or intercepting resident software have bugs
	  that may destroy DX on return or not properly set the Carry flag.
	  At least some Microsoft software frames calls to this function with
	  PUSH DX, STC, INT 13h, STI, POP DX.
	on the original IBM AT BIOS (1984/01/10) this function does not disable
	  interrupts for harddisks (DL >= 80h).	 On these machines the MS-DOS/
	  PC DOS IO.SYS/IBMBIO.COM installs a special filter to bypass the
	  buggy code in the ROM (see CALL F000h:211Eh)
SeeAlso: AH=03h,AH=0Ah,AH=06h"V10DISK.SYS",AH=21h"PS/1",AH=42h"IBM"
SeeAlso: INT 21/AX=440Dh/CX=084Bh,INT 4D/AH=02h
--------B-1303-------------------------------
INT 13 - DISK - WRITE DISK SECTOR(S)
	AH = 03h
	AL = number of sectors to write (must be nonzero)
	CH = low eight bits of cylinder number
	CL = sector number 1-63 (bits 0-5)
	     high two bits of cylinder (bits 6-7, hard disk only)
	DH = head number
	DL = drive number (bit 7 set for hard disk)
	ES:BX -> data buffer
Return: CF set on error
	CF clear if successful
	AH = status (see #00234)
	AL = number of sectors transferred
	      (only valid if CF set for some BIOSes)
Notes:	errors on a floppy may be due to the motor failing to spin up quickly
	  enough; the write should be retried at least three times, resetting
	  the disk with AH=00h between attempts
	most BIOSes support "multitrack" writes, where the value in AL
	  exceeds the number of sectors remaining on the track, in which
	  case any additional sectors are written beginning at sector 1 on
	  the following head in the same cylinder; the CONFIG.SYS command
	  MULTITRACK can be used to force DOS to split disk accesses which
	  would wrap across a track boundary into two separate calls
	the IBM AT BIOS and many other BIOSes use only the low four bits of
	  DH (head number) since the WD-1003 controller which is the standard
	  AT controller (and the controller that IDE emulates) only supports
	  16 heads
	AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
	  than 1024 cylinders by placing bits 10 and 11 of the cylinder number
	  into bits 6 and 7 of DH
	under Windows95, an application must issue a physical volume lock on
	  the drive via INT 21/AX=440Dh before it can successfully write to
	  the disk with this function
SeeAlso: AH=02h,AH=0Bh,AH=07h"V10DISK.SYS",AH=22h"PS/1",AH=43h"IBM"
SeeAlso: INT 21/AX=440Dh"DOS 3.2+",INT 4D/AH=03h
--------B-1304-------------------------------
INT 13 - DISK - VERIFY DISK SECTOR(S)
	AH = 04h
	AL = number of sectors to verify (must be nonzero)
	CH = low eight bits of cylinder number
	CL = sector number 1-63 (bits 0-5)
	     high two bits of cylinder (bits 6-7, hard disk only)
	DH = head number
	DL = drive number (bit 7 set for hard disk)
	ES:BX -> data buffer (PC,XT,AT with BIOS prior to 1985/11/15)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234)
	AL = number of sectors verified
Notes:	errors on a floppy may be due to the motor failing to spin up quickly
	  enough (timeout error 80h); the write should be retried at least
	  three times, resetting the disk with AH=00h between attempts
	on floppys, the operation should also be retried on media change
	  (06h) detection.
	this function does not compare the disk with memory, it merely
	  checks whether the sector's stored CRC matches the data's actual CRC
	the IBM AT BIOS and many other BIOSes use only the low four bits of
	  DH (head number) since the WD-1003 controller which is the standard
	  AT controller (and the controller that IDE emulates) only supports
	  16 heads
	AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
	  than 1024 cylinders by placing bits 10 and 11 of the cylinder number
	  into bits 6 and 7 of DH
BUG:	some Epson ROM BIOSes sometimes have problems properly handling this
	  function. The workaround is to reset the disk (INT 13/AH=00h) before
	  the call.
SeeAlso: AH=02h,AH=44h,INT 4D/AH=04h,INT 4D/AH=06h
--------B-1305-------------------------------
INT 13 - FLOPPY - FORMAT TRACK
	AH = 05h
	AL = number of sectors to format
	CH = track number
	DH = head number
	DL = drive number
	ES:BX -> address field buffer (see #00235)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234)
Notes:	on AT or higher, call AH=17h first
	the number of sectors per track is read from the diskette parameter
	  table pointed at by INT 1E
BUG:	some old Compaq BIOSes have a bug when attempting to call this function
	  from Windows Standard Mode with EMM386 loaded.  A possible workaround
	  is to call this function from Real Mode e.g. through DPMI function
	  "Call Real Mode function with FAR return" (see INT 31/AX=0301h).
SeeAlso: AH=05h"FIXED",AH=17h,AH=18h,INT 1E

Format of floppy format address field buffer entry (one per sector in track):
Offset	Size	Description	(Table 00235)
 00h	BYTE	track number
 01h	BYTE	head number (0-based)
 02h	BYTE	sector number
 03h	BYTE	sector size (00h=128 bytes, 01h=256 bytes, 02h=512, 03h=1024)
--------B-1305-------------------------------
INT 13 - FIXED DISK - FORMAT TRACK
	AH = 05h
	AL = interleave value (XT-type controllers only)
	ES:BX -> 512-byte format buffer
		the first 2*(sectors/track) bytes contain F,N for each sector
		   F = sector type
			00h for good sector
			20h to unassign from alternate location
			40h to assign to alternate location
			80h for bad sector
		   N = sector number
	CH = cylinder number (bits 8,9 in high bits of CL)
	CL = high bits of cylinder number (bits 7,6)
	DH = head
	DL = drive
Return: CF set on error
	CF clear if successful
	AH = status code (see #00234)
Notes:	AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
	  than 1024 cylinders by placing bits 10 and 11 of the cylinder number
	  into bits 6 and 7 of DH
	for XT-type controllers on an AT or higher, AH=0Fh should be called
	  first
	the IBM AT BIOS and many other BIOSes use only the low four bits of
	  DH (head number) since the WD-1003 controller which is the standard
	  AT controller (and the controller that IDE emulates) only supports
	  16 heads
	not all controller support sector types 20h and 40h
	under Windows95, an application must issue a physical volume lock on
	  the drive via INT 21/AX=440Dh before it can successfully write to
	  the disk with this function
SeeAlso: AH=05h"FLOPPY",AH=06h"FIXED",AH=07h"FIXED",AH=0Fh,AH=18h,AH=1Ah
--------d-1305-------------------------------
INT 13 - Future Domain SCSI BIOS - SEND SCSI MODE SELECT COMMAND
	AH = 05h
	DL = hard drive ID
	ES:BX -> mode select data (see #00236)
Return: CF set on error
	CF clear if successful
	AH = status code (see #00234)
Notes:	this function can be called before AH=07h"SCSI" or AH=06h"SCSI" to
	  format a SCSI disk with the desired parameters
	the mode select data below is from the SCSI-1 specification
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=06h"SCSI",AH=07h"SCSI",INT 4F/AX=8100h

Format of Future Domain SCSI mode select data:
Offset	Size	Description	(Table 00236)
 00h	BYTE	number of bytes of remaining data (12 + vendor unique length)
 01h	BYTE	reserved (0)
 02h	BYTE	medium type (0 for hard disk)
 03h	BYTE	reserved (0)
 04h	BYTE	block descriptor length (8)
 05h	BYTE	density code (0 for hard disk)
 06h  3 BYTEs	(big-endian) number of blocks (000000h for entire disk)
 09h	BYTE	reserved (0)
 0Ah  3 BYTEs	(big-endian) block length (512 standard, or 256)
 0Dh	???	vendor-specific parameter bytes (optional)
--------d-13057FSI324D-----------------------
INT 13 - 2M - FORMAT TRACK
	AX = 057Fh
	SI = 324Dh ("2M")
	CH = track number
	DH = head number
	DL = drive number
	ES:BX -> boot sector of future 2M diskette
Return: CF set on error
	CF clear if successful
	AH = status (see #00234)
Program: 2M is a TSR developed by Ciriaco Garc¡a de Celis to support
	  non standard diskettes with 820-902/1476-1558K (5.25 DD/HD)
	  and 984-1066/1804-1886K/3608-3772K (3.5 DD/HD/ED)
InstallCheck: must search for a "CiriSOFT:2M:1.3" or "CiriSOFT:2MX:3.0" or
	  similar (recomended ":2M:", ":2MX:", or ":2MB:" substrings) in the
	  CiriSOFT TSR interface
Notes:	it is not necessary to call AH=17h or AH=18h first (will be ignored)
	the diskette format must always begin on cylinder 0 head 0
	the boot sector can be obtained from an already-formatted 2M diskette
	  (by calling AH=02h with head number 00h in 2M v1.x and with head
	  number 80h for 2M v2+)
	since 2M v2.0, the BOOT sector is emulated using the first physical
	  sector of FAT2; the second-sixth physical sectors of FAT2 in HD or ED
	  diskettes store the SuperBOOT code. To skip the FAT2 emulation (using
	  FAT1) of 2M, in order to read the SuperBOOT code, head number must be
	  80h-81h instead 0-1 (bit 7 active) in standard read/write functions.
	  This lets diskcopy programs format 2M target diskettes copying
	  SuperBOOT code. If the target diskette is already 2MF formatted
	  (containing boot code) this trick it is not necessary.
	when using STV technology (offset 65 of boot sector equal to 1) it is
	  necessary to write the full track before formatting (except track 0
	  side 0) to complete the format and skip future CRC errors on read; in
	  track 0 side 1 the head used must be 81h instead 1. Diskcopy programs
	  may do a format-write-verify sequential phases to improve performance
SeeAlso: AH=05h"FLOPPY",AH=18h/CX=5055h,INT 2F"CiriSOFT"
--------B-1306-------------------------------
INT 13 - FIXED DISK - FORMAT TRACK AND SET BAD SECTOR FLAGS (XT,PORT)
	AH = 06h
	AL = interleave value
	CH = cylinder number (bits 8,9 in high bits of CL)
	CL = sector number
	DH = head
	DL = drive
Return: AH = status code (see #00234)
Note:	AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
	  than 1024 cylinders by placing bits 10 and 11 of the cylinder number
	  into bits 6 and 7 of DH
SeeAlso: AH=05h"FIXED",AH=07h"FIXED"
--------d-1306-------------------------------
INT 13 - Future Domain SCSI BIOS - FORMAT DRIVE WITH BAD SECTOR MAPPING
	AH = 06h
	AL = interleave
	     (0 = default, 1 = consecutive sectors, 2 - 255 = vendor unique)
	DL = hard drive ID
	DH = defect list info (see #00237)
	ES:BX -> defect table A, B or C (see #00238,#00239,#00240)
Return: CF set on error
	CF clear if successful
	AH = status code (see #00234)
Notes:	block addresses must be in ascending order (for table B, cylinder is
	  most significant, byte from index least significant; for table C,
	  cylinder is most significant, sector number least significant)
	table B defect bytes from index of FFFFFFFFh indicates that the entire
	  track shall be reassigned
	table C defect sector number of FFFFFFFFh indicates that the entire
	  track shall be reassigned
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=05h"SCSI",AH=06h"FIXED",AH=07h"SCSI"

Bitfields for Future Domain SCSI defect list info:
Bit(s)	Description	(Table 00237)
 7-5	drive LUN
 4	defect list is available
 3	defect list is complete (erase drive's defect list)
 2-0	defect table format
	(000=use defect table A, 100=use defect table B,
	 101=use defect table C)

Format of Future Domain SCSI defect table A:
Offset	Size	Description	(Table 00238)
 00h	WORD	number of bytes remaining in table
 02h	BYTE	reserved (0)
 03h	BYTE	reserved (0)
 04h	WORD	(big-endian) defect list length (4*number of defects)
 06h  4 DWORDs	(big-endian) defect block addresses

Format of Future Domain SCSI defect table B:
Offset	Size	Description	(Table 00239)
 00h	WORD	number of bytes remaining in table
 02h	BYTE	reserved (0)
 03h	BYTE	reserved (0)
 04h	WORD	(big-endian) defect list length (8*number of defects)
 06h 8N BYTEs	defect list [array] (see #00241)

Format of Future Domain SCSI defect table C:
Offset	Size	Description	(Table 00240)
 00h	WORD	number of bytes remaining in table
 02h	BYTE	reserved (0)
 03h	BYTE	reserved (0)
 04h	WORD	(big-endian) defect list length (8*number of defects)
 06h 8N BYTEs	defect list [array] (see #00241)

Format of Future Domain SCSI defect list entry:
Offset	Size	Description	(Table 00241)
 00h  3 BYTEs	(big-endian) cylinder number of defect
 03h	BYTE	head number of defect
 04h	DWORD	(big-endian) defect bytes from index
--------d-1306-------------------------------
INT 13 - Adaptec AHA-154xA/Bustek BT-542 BIOS - IDENTIFY SCSI DEVICES
	AH = 06h
Return: AH = status code (see #00234)
	CF clear if successful
	    AL = first drive supported
		(80h nonconcurrent operation, 81h concurrent operation)
	CF set on error
Desc:	determine the number of the first supported SCSI drive
Note:	the return value is 80h when two SCSI drives are supported, 81h if
	  only one SCSI drive is installed
SeeAlso: AH=08h"PC",#00732 at INT 1A/AX=B102h
--------d-1306-------------------------------
INT 13 - V10DISK.SYS - READ DELETED SECTORS
	AH = 06h
	AL = number of sectors
	CH = cylinder number (bits 8,9 in high bits of CL)
	CL = sector number
	DH = head
	DL = drive
	ES:BX -> buffer
Return: AH = status code (see #00234)
Program: V10DISK.SYS is a driver for the Flagstaff Engineering 8" floppies
SeeAlso: AH=02h,AH=07h"V10DISK.SYS"
--------B-1307-------------------------------
INT 13 - FIXED DISK - FORMAT DRIVE STARTING AT GIVEN TRACK (XT,PORT)
	AH = 07h
	AL = interleave value (XT only)
	ES:BX = 512-byte format buffer (see AH=05h)
	CH = cylinder number (bits 8,9 in high bits of CL)
	CL = sector number
	DH = head
	DL = drive
Return: AH = status code (see #00234)
Note:	AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
	  than 1024 cylinders by placing bits 10 and 11 of the cylinder number
	  into bits 6 and 7 of DH
SeeAlso: AH=05h"FIXED",AH=06h"FIXED",AH=1Ah
--------d-1307-------------------------------
INT 13 - Future Domain SCSI BIOS - FORMAT DRIVE
	AH = 07h
	AL = interleave (0 = default, 1 = consecutive sectors,
	       2 - 255 = vendor unique)
	DL = hard drive ID
Return: CF set on error
	CF clear if successful
	AH = status code (see #00234)
SeeAlso: AH=05h"SCSI",AH=06h"SCSI",AH=07h"FIXED"
--------d-1307-------------------------------
INT 13 - V10DISK.SYS - WRITE DELETED SECTORS
	AH = 07h
	AL = number of sectors
	CH = cylinder number (bits 8,9 in high bits of CL)
	CL = sector number
	DH = head
	DL = drive
	ES:BX -> buffer
Return: AH = status code (see #00234)
Program: V10DISK.SYS is a driver for the Flagstaff Engineering 8" floppies
SeeAlso: AH=03h,AH=06h"V10DISK.SYS"
--------B-1308-------------------------------
INT 13 - DISK - GET DRIVE PARAMETERS (PC,XT286,CONV,PS,ESDI,SCSI)
	AH = 08h
	DL = drive (bit 7 set for hard disk)
	ES:DI = 0000h:0000h to guard against BIOS bugs
Return: CF set on error
	    AH = status (07h) (see #00234)
	CF clear if successful
	    AH = 00h
	    AL = 00h on at least some BIOSes
	    BL = drive type (AT/PS2 floppies only) (see #00242)
	    CH = low eight bits of maximum cylinder number
	    CL = maximum sector number (bits 5-0)
		 high two bits of maximum cylinder number (bits 7-6)
	    DH = maximum head number
	    DL = number of drives
	    ES:DI -> drive parameter table (floppies only)
Notes:	may return successful even though specified drive is greater than the
	  number of attached drives of that type (floppy/hard); check DL to
	  ensure validity
	for systems predating the IBM AT, this call is only valid for hard
	  disks, as it is implemented by the hard disk BIOS rather than the
	  ROM BIOS
	the IBM ROM-BIOS returns the total number of hard disks attached
	  to the system regardless of whether DL >= 80h on entry.
	Toshiba laptops with HardRAM return DL=02h when called with DL=80h,
	  but fail on DL=81h.  The BIOS data at 40h:75h correctly reports 01h.
	may indicate only two drives present even if more are attached; to
	  ensure a correct count, one can use AH=15h to scan through possible
	  drives
	Reportedly some Compaq BIOSes with more than one hard disk controller
	  return only the number of drives DL attached to the corresponding
	  controller as specified by the DL value on entry.  However, on
	  Compaq machines with "COMPAQ" signature at F000h:FFEAh,
	  MS-DOS/PC DOS IO.SYS/IBMBIO.COM call INT 15/AX=E400h and 
	  INT 15/AX=E480h to enable Compaq "mode 2" before retrieving the count
	  of hard disks installed in the system (DL) from this function.
	the maximum cylinder number reported in CX is usually two less than
	  the total cylinder count reported in the fixed disk parameter table
	  (see INT 41h,INT 46h) because early hard disks used the last cylinder
	  for testing purposes; however, on some Zenith machines, the maximum
	  cylinder number reportedly is three less than the count in the fixed
	  disk parameter table.
	for BIOSes which reserve the last cylinder for testing purposes, the
	  cylinder count is automatically decremented
	on PS/1s with IBM ROM DOS 4, nonexistent drives return CF clear,
	  BX=CX=0000h, and ES:DI = 0000h:0000h
	machines with lost CMOS memory may return invalid data for floppy
	  drives. In this situation CF is cleared, but AX,BX,CX,DX,DH,DI,
	  and ES contain only 0.  At least under some circumstances, MS-DOS/
	  PC DOS IO.SYS/IBMBIO.COM just assumes a 360 KB floppy if it sees
	  CH to be zero for a floppy.
	the PC-Tools PCFORMAT program requires that AL=00h before it will
	  proceed with the formatting
	if this function fails, an alternative way to retrieve the number
	  of floppy drives installed in the system is to call INT 11h.
	In fact, the MS-DOS/PC-DOS IO.SYS/IBMBIO.COM attempts to get the
	  number of floppy drives installed from INT 13/AH=08h, when INT 11h
	  AX bit 0 indicates there are no floppy drives installed. In addition
	  to testing the CF flag, it only trusts the result when the number of
	  sectors (CL preset to zero) is non-zero after the call.
BUGS:	several different Compaq BIOSes incorrectly report high-numbered
	  drives (such as 90h, B0h, D0h, and F0h) as present, giving them the
	  same geometry as drive 80h; as a workaround, scan through disk
	  numbers, stopping as soon as the number of valid drives encountered
	  equals the value in 0040h:0075h
	a bug in Leading Edge 8088 BIOS 3.10 causes the DI,SI,BP,DS, and ES
	  registers to be destroyed
	some Toshiba BIOSes (at least before 1995, maybe some laptops???
	  with 1.44 MB floppies) have a bug where they do not set the ES:DI
	  vector even for floppy drives. Hence these registers should be
	  preset with zero before the call and checked to be non-zero on
	  return before using them.  Also it seems these BIOSes can return
	  wrong info in BL and CX, as S/DOS 1.0 can be configured to preset
	  these registers as for an 1.44 MB floppy.
	the PS/2 Model 30 fails to reset the bus after INT 13/AH=08h and
	  INT 13/AH=15h. A workaround is to monitor for these functions
	  and perform a transparent INT 13/AH=01h status read afterwards.
	  This will reset the bus. The MS-DOS 6.0 IO.SYS takes care of
	  this by installing a special INT 13h interceptor for this purpose.
	AD-DOS may leave interrupts disabled on return from this function.
	Some Microsoft software explicitly sets STI after return.
SeeAlso: AH=06h"Adaptec",AH=13h"SyQuest",AH=48h,AH=15h,INT 1E
SeeAlso: INT 41"HARD DISK 0"

(Table 00242)
Values for diskette drive type:
 01h	360K
 02h	1.2M
 03h	720K
 04h	1.44M
 05h	??? (reportedly an obscure drive type shipped on some IBM machines)
	2.88M on some machines (at least AMI 486 BIOS)
 06h	2.88M
 10h	ATAPI Removable Media Device
--------d-1308-------------------------------
INT 13 - V10DISK.SYS - SET FORMAT
	AH = 08h
	AL = number of sectors
	CH = cylinder number (bits 8,9 in high bits of CL)
	CL = sector number
	DH = head
	DL = drive
Return: AH = status code (see #00234)
Program: V10DISK.SYS is a driver for the Flagstaff Engineering 8" floppies
Note:	details not available
SeeAlso: AH=03h,AH=06h"V10DISK.SYS"
--------y-130800DLF0-------------------------
INT 13 - SecureDrive - INSTALLATION CHECK
	AX = 08000h
	DL = F0h
Return: AX = EDCBh for version 1.0-1.2
	AX = EDCCh for version 1.3
	CX = code segment
	DX = data address within code segment
Program: SecureDrive by Mike Ingle <mikeingle@delphi.com> allows you to create
	  an encrypted partition on your harddisk.
--------B-1309-------------------------------
INT 13 - HARD DISK - INITIALIZE CONTROLLER WITH DRIVE PARAMETERS (AT,PS)
	AH = 09h
	DL = drive (80h for first, 81h for second)
Return: CF clear if successful
	CF set on error
	AH = status (see #00234)
Notes:	on the PC and XT, this function uses the parameter table pointed at by
	  INT 41
	on the AT and later, this function uses the parameter table pointed at
	  by INT 41 if DL=80h, and the parameter table pointed at by INT 46 if
	  DL=81h
SeeAlso: INT 41"HARD DISK 0",INT 46"HARD DISK 1"
--------B-130A-------------------------------
INT 13 - HARD DISK - READ LONG SECTOR(S) (AT and later)
	AH = 0Ah
	AL = number of sectors (01h may be only value supported)
	CH = low eight bits of cylinder number
	CL = sector number (bits 5-0)
	     high two bits of cylinder number (bits 7-6)
	DH = head number
	DL = drive number (80h = first, 81h = second)
	ES:BX -> data buffer
Return: CF clear if successful
	CF set on error
	AH = status (see #00234)
	AL = number of sectors transferred
Notes:	this function reads in four to seven bytes of error-correcting code
	  along with each sector's worth of information
	data errors are not automatically corrected, and the read is aborted
	  after the first sector with an ECC error
	used for diagnostics only on PS/2 systems; IBM officially classifies
	  this function as optional
BUG:	on the original IBM AT BIOS (1984/01/10) this function does not disable
	  interrupts for harddisks (DL >= 80h). On these machines the MS-DOS/
	  PC DOS IO.SYS/IBMBIO.COM installs a special filter to bypass the
	  buggy code in the ROM (see CALL F000h:211Eh)
SeeAlso: AH=02h,AH=0Bh,MEM 0040h:0074h
--------B-130B-------------------------------
INT 13 - HARD DISK - WRITE LONG SECTOR(S) (AT and later)
	AH = 0Bh
	AL = number of sectors (01h may be only value supported)
	CH = low eight bits of cylinder number
	CL = sector number (bits 5-0)
	     high two bits of cylinder number (bits 7-6)
	DH = head number
	DL = drive number (80h = first, 81h = second)
	ES:BX -> data buffer
Return: CF clear if successful
	CF set on error
	AH = status (see #00234)
	AL = number of sectors transferred
Notes:	each sector's worth of data must be followed by four to seven bytes of
	  error-correction information
	used for diagnostics only on PS/2 systems; IBM officially classifies
	  this function as optional
SeeAlso: AH=03h,AH=0Ah,MEM 0040h:0074h
--------B-130C-------------------------------
INT 13 - HARD DISK - SEEK TO CYLINDER
	AH = 0Ch
	CH = low eight bits of cylinder number
	CL = sector number (bits 5-0)
	    high two bits of cylinder number (bits 7-6)
	DH = head number
	DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234)
SeeAlso: AH=00h,AH=02h,AH=0Ah,AH=47h
--------B-130D-------------------------------
INT 13 - HARD DISK - RESET HARD DISKS
	AH = 0Dh
	DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234)
Notes:	reinitializes the hard disk controller, resets the specified drive's
	  parameters, and recalibrates the drive's heads (seek to track 0)
	for PS/2 35SX, 35LS, 40SX and L40SX, as well as many other systems,
	  both the master drive and the slave drive respond to the Reset
	  function that is issued to either drive
	not for PS/2 ESDI drives
SeeAlso: AH=00h,INT 21/AH=0Dh
--------B-130E-------------------------------
INT 13 - HARD DISK - READ SECTOR BUFFER (XT only)
	AH = 0Eh
	DL = drive number (80h = first, 81h = second hard disk)
	ES:BX -> buffer
Return: CF set on error
	CF clear if successful
	AH = status code (see #00234)
Notes:	transfers controller's sector buffer.  No data is read from the drive
	used for diagnostics only on PS/2 systems
SeeAlso: AH=0Ah
--------B-130F-------------------------------
INT 13 - HARD DISK - WRITE SECTOR BUFFER (XT only)
	AH = 0Fh
	DL = drive number (80h = first, 81h = second hard disk)
	ES:BX -> buffer
Return: CF set on error
	CF clear if successful
	AH = status code (see #00234)
Notes:	does not write data to the drive
	should be called before formatting to initialize an XT-type
	  controller's sector buffer
	used for diagnostics only on PS/2 systems
SeeAlso: AH=0Bh
--------B-1310-------------------------------
INT 13 - HARD DISK - CHECK IF DRIVE READY
	AH = 10h
	DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
SeeAlso: AH=11h
--------B-1311-------------------------------
INT 13 - HARD DISK - RECALIBRATE DRIVE
	AH = 11h
	DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
Note:	causes hard disk controller to seek the specified drive to cylinder 0
SeeAlso: AH=00h,AH=0Ch,AH=10h,AH=19h"FIXED DISK",MEM 0040h:003Eh
--------B-1312-------------------------------
INT 13 - HARD DISK - CONTROLLER RAM DIAGNOSTIC (XT,PS)
	AH = 12h
	DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
	CF clear if successful
	AH = status code (see #00234 at AH=01h)
	AL = 00h
SeeAlso: AH=13h,AH=14h
--------d-1312-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - STOP SCSI DISK
	AH = 12h
	DL = hard drive ID
Return: CF set on error
	CF clear if successful
	AH = status code (see #00234 at AH=01h)
Notes:	available at least on the TMC-870 8-bit SCSI controller BIOS v6.0A
	if the given drive is a SCSI device, the SCSI Stop Unit command is sent
	  and either "Disk prepared for shipping" or "Disk Stop command failed"
	  is displayed
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
--------d-1312-------------------------------
INT 13 - SyQuest - START/STOP SCSI DISK
	AH = 12h
	AL = subfunction
	    00h start disk
	    01h stop disk
	CX = wait flag
	    00h wait for ready
	    01h don't wait for ready
	DL = hard drive ID (bit 7 for hard disks must be set)
Return: CF set on error
	CF clear if successful
	AH = status
	    00h successful
	    01h invalid function request
	    80h timeout
SeeAlso: AH=12h"Future Domain",AH=13h"SyQuest"
--------B-1313-------------------------------
INT 13 - HARD DISK - DRIVE DIAGNOSTIC (XT,PS)
	AH = 13h
	DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
	CF clear if successful
	AH = status code (see #00234 at AH=01h)
	AL = 00h
SeeAlso: AH=12h"HARD DISK",AH=14h"HARD DISK"
--------d-1313-------------------------------
INT 13 - SyQuest - READ DRIVE PARAMATERS (for DOS 5+)
	AH = 13h
	DL = drive ID (bit 7 set for hard disks)
Return: CF set on error
	    AH = status (07h) (see #00234 at AH=01h)
	CF clear if successful
	    AH = 00h
	    BL = drive type (AT/PS2 floppies only) (see #00242)
	    CH = low eight bits of maximum cylinder number
	    CL = maximum sector number (bits 5-0)
		 high two bits of maximum cylinder number (bits 7-6)
	    DH = maximum head number
	    DL = number of drives
	    ES:DI -> drive parameter table (floppies only)
Notes:	the return values are identical to the standard INT 13/AH=08h, but the
	  number of drives is not limited to 2, so
	scanning all possible drive numbers with the Read DASD Type call
	  (AH=15h) should generally be preferred to determine the number of
	  drives attached to the system.
SeeAlso: AH=08h"PC",AH=12h"SyQuest",AH=15h,AH=59h"SyQuest"
--------B-1314-------------------------------
INT 13 - HARD DISK - CONTROLLER INTERNAL DIAGNOSTIC
	AH = 14h
Return: CF set on error
	CF clear if successful
	AH = status code (see #00234 at AH=01h)
	AL = 00h
SeeAlso: AH=12h,AH=13h
--------B-1315-------------------------------
INT 13 - DISK - GET DISK TYPE (XT 1986/1/10 or later,XT286,AT,PS)
	AH = 15h
	DL = drive number (bit 7 set for hard disk)
	(AL = FFh, CX = FFFFh, see Note)
Return: CF clear if successful
	    AH = type code
		00h no such drive
		    (SpeedStor) AL = 03h hard disk
				    CX:DX = number of 512-byte sectors
		01h floppy without change-line support
		02h floppy (or other removable drive) with change-line support
		03h hard disk
		    CX:DX = number of 512-byte sectors
	CF set on error
	    AH = status (see #00234 at AH=01h)
Note:	SyQuest can report type 01h or 02h for 'hard disks', since its media
	  is removable
BUGS:	many versions of the Award 486 BIOS do not return the sector count
	  because the BIOS exit code restores CX and DX to their original
	  values after the function had already set them to correct values
	Some releases of PC Tools REBUILD preset CX=FFFFh and only trust the
	  results if CH <= 2 on return (which would cut off drives > 16 Gb).
	several different Compaq BIOSes incorrectly report high-numbered
	  drives (such as 90h, B0h, D0h, and F0h) as present, giving them the
	  same geometry as drive 80h; as a workaround, scan through disk
	  numbers, stopping as soon as the number of valid drives encountered
	  equals the value in 0040h:0075h
	the PS/2 Model 30 fails to reset the bus after INT 13/AH=08h and
	  INT 13/AH=15h.  A workaround is to monitor for these functions
	  and perform a transparent INT 13/AH=01h status read afterwards.
	  This will reset the bus. The MS-DOS 6.0 IO.SYS takes care of
	  this by installing a special INT 13h interceptor for this purpose.
	Some releases of SpeedStor have a bug where it reports AX=0003h instead
	  of correctly reporting AH=03h for hard disks. A possible workaround
	  when testing for hard disks is to check for AH=03h and AX=0003h.
	  In this case this function should be invoked with a bogus fixed
	  value in AL, e.g. AL=FFh.
SeeAlso: AH=08h,AH=16h,AH=17h,AH=19h"SCSI",MEM 0040h:0075h
--------B-1316-------------------------------
INT 13 - FLOPPY DISK - DETECT DISK CHANGE (XT 1986/1/10 or later,XT286,AT,PS)
	AH = 16h
	DL = drive number (00h-7Fh)
	SI = 0000h (to avoid crash on AT&T 6300)
Return: CF clear if change line inactive
	    AH = 00h (disk not changed)
	CF set if change line active
	    AH = status
		01h invalid command (SyQuest)
		06h change line active or not supported
		80h drive not ready or not present
Notes:	call AH=15h first to determine whether the drive supports a change
	  line
	this call also clears the media-change status, so that a disk change
	  is only reported once
BUGS:	some versions of Award 386 Modular BIOS and AMI BIOS fail to clear
	  the media-change status
	AT&T 6300 WGS systems crash if SI <> 0 on entry.
	some pre 1986/08/04 Compaq ROM BIOS have a serious bug where this
	  function may re-configure a hard disk depending on what is located
	  at ES:[BX] and data indexed to by it. MS-DOS/PC DOS IO.SYS/IBMBIO.COM
	  install a special filter when they detect Compaq ROM BIOSes with
	  earlier dates.
	some Compaq 286 systems have a bug in all INT 13h functions >= 16h,
	  which causes the byte at DS:0074h to be destroyed when called for
	  hard disks (DL >= 80h). MS-DOS/PC DOS IO.SYS/IBMBIO.COM performs a
	  test on this bug using this sub-function, and if found installs a
	  special filter which points DS into ROM, so that it cannot cause
	  any harm.
	some drives (or controllers???) forget the change line status
	  if another drive is accessed afterwards. The DOS BIOS takes care
	  of this by not relying on the reported change line status when
	  the change line is not active and a different drive is accessed,
	  instead it reports "don't know" to the DOS kernel.
SeeAlso: AH=15h,AH=49h
--------B-1317-------------------------------
INT 13 - FLOPPY DISK - SET DISK TYPE FOR FORMAT (AT,PS)
	AH = 17h
	AL = format type
	    01h = 320/360K disk in 360K drive
	    02h = 320/360K disk in 1.2M drive
	    03h = 1.2M disk in 1.2M drive
	    04h = 720K disk in 720K or 1.44M drive
	DL = drive number
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
Note:	this function does not handle 1.44M drives; use AH=18h instead
SeeAlso: AH=15h,AH=18h
--------d-131700-----------------------------
INT 13 - Future Domain SCSI CONTROLLER - GET INQUIRY INFO FROM SCSI DEVICE
	AX = 1700h
	CL = length of buffer
	DL = hard drive ID
	ES:BX -> buffer for info (see #00243)
Return: CF clear if successful
	    CH = number of bytes returned in buffer???
	CF set on error
	    AH = status code (see #00234 at AH=01h)
Notes:	this function is not available with 8-bit controller ROM versions < 7.0
	information block bytes 5-n are vendor-specific in older SCSI devices
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=18h"SCSI",AH=1Bh"SCSI"

Format of Future Domain SCSI inquiry information block:
Offset	Size	Description	(Table 00243)
 00h	BYTE	device type
		bits 0-4: peripheral device type (see #00244)
		bits 5-7: peripheral qualifier (see #00245)
 01h	BYTE	device type modifier
		bits 0-6: device type modifier
		bit 7: removable medium
 02h	BYTE	SCSI version (see #00246)
 03h	BYTE	data format/capabilities (see #00247)
 04h	BYTE	additional data length (total remaining bytes)
 05h  2 BYTEs	reserved
 07h	BYTE	device capabilities (see #00248)
 08h  8 BYTEs	vendor identification (space-padded ASCII)
 10h  8 BYTEs	product identification (space-padded ASCII)
 20h  4 BYTEs	product revision level (space-padded ASCII)
 24h 20 BYTEs	vendor specific
 38h 40 BYTEs	reserved
 60h	var	vendor specific parameters

(Table 00244)
Values for Future Domain SCSI peripheral device type:
 00h	direct-access device (e.g., magnetic disk)
 01h	sequential-access device (e.g., magnetic tape)
 02h	printer device
 03h	processor device
 04h	write-once device (e.g., some optical disks)
 05h	CD-ROM device
 06h	scanner device
 07h	optical memory device (e.g., some optical disks)
 08h	medium changer device (e.g., jukeboxes)
 09h	communications device
 0Ah	(defined by ASC IT8)
 0Bh	(defined by ASC IT8)
 0Ch-1Eh reserved
 1Fh	unknown or no device type

(Table 00245)
Values for Future Domain SCSI peripheral qualifier:
 000b	device is currently connected to this logical unit and available
 001b	target is capable of supporting the specified peripheral, but the
	  physical device is not currently connected to this logical unit
 010b	reserved
 011b	target can't support a physical device on this logical unit
 1xxb	vendor specific

Bitfields for Future Domain SCSI version:
Bit(s)	Description	(Table 00246)
 0-2	ANSI-approved version
	000 device might or might not comply to ANSI standard
	001 device complies to ANSI SCSI-1
	010 device complies to ANSI SCSI-2
	other reserved
 3-5	ECMA version
 6-7	ISO version

Bitfields for Future Domain SCSI data format/capabilities:
Bit(s)	Description	(Table 00247)
 0-2	response data format
	000 information block is as specified in SCSI-1
	001 information block is as specified in CCS
	010 information block is as specified in SCSI-2
	other reserved
 4-5	reserved
 6	terminate I/O process supported
 7	asynchronous event notification supported

Bitfields for Future Domain SCSI device capabilities:
Bit(s)	Description	(Table 00248)
 0	device responds to RESET with a hard RESET
 1	tagged command queuing supported
 2	reserved
 3	linked commands supported
 4	synchronous data transfer supported
 5	16-transfers supported
 6	32-transfers supported
 7	relative addressing supported
--------B-1318-------------------------------
INT 13 - DISK - SET MEDIA TYPE FOR FORMAT (AT model 3x9,XT2,XT286,PS)
	AH = 18h
	DL = drive number
	CH = lower 8 bits of highest cylinder number (number of cylinders - 1)
	CL = sectors per track (bits 0-5)
	     top 2 bits of highest cylinder number (bits 6,7)
Return: AH = status
	    00h requested combination supported
	    01h function not available
	    0Ch not supported or drive type unknown
	    80h there is no disk in the drive
	ES:DI -> 11-byte parameter table (see #01264 at INT 1E)
Note:	this function does not set the INT 1E vector to point at the returned
	  parameter table; it is the caller's responsibility to do so
SeeAlso: AH=05h,AH=07h,AH=17h,INT 1E
--------d-1318-------------------------------
INT 13 - Future Domain SCSI BIOS - GET SCSI CONTROLLER INFORMATION
	AH = 18h
	DL = hard drive ID
Return: CF set on error
	    AH = status code (see #00234 at AH=01h)
	CF clear if successful
	    AX = 4321h (magic number)
	    CX = controller family code (see #00249)
	    ---if family code=0200h
		DH = number of exclusively ROM-controlled SCSI devices
		DL = canonical SCSI device number for specified drive
	    ---if family code <> 0200h
		BH = number of exclusively ROM-controlled SCSI devices
		BL = canonical SCSI device number for specified drive
Notes:	also sets an internal flag (non-resettable) which prevents some
	  controller messages from being displayed, allows writes to
	  removable devices (use caution!), and enables the INT 13 interface
	  for more than one drive (i.e. DL >= 81h) in at least some ROM
	  versions
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=05h"SCSI",AX=1700h"SCSI",AH=1Bh"SCSI",INT 4F/AX=8100h

(Table 00249)
Values for Future Domain SCSI controller family code:
 0200h	TMC-1680/? (ROM 3.0)
 0203h	TMC-1650/1660/1670/1680 (ROM 2.0)
 040Ah	TMC-820/830/840/850/860/870/875/880/885 (ROM <= 6.0A)
 050Dh	TMC-840/841/880/881 (ROM 5.2D)
 0700h	TMC-830/850/860/875/885 (ROM 7.0)
--------d-1318--CX5055-----------------------
INT 13 - PU_1700.COM - INSTALLATION CHECK
	AH = 18h
	CX = 5055h ('PU')
	DL = 00h
Return: AX = 7570h ('up') if PU_1700 is installed
Program: PU_1700 is a BIOS enhancer from PU Service Systems which permits
	  formatting diskettes at higher capacity (1.78M instead of 1.44M)
SeeAlso: AX=057Fh/SI=324Dh"2M"
--------d-1318--CXD2C9-----------------------
INT 13 - XDF.COM - API
	AH = 18h
	CX = D2C9h ("R"+80h, "I"+80h = Roger Ivey)
	DX = 0000h
	BX = function
	    0000h installation check
		  Return: AH = 0Ch
			  CX = 7269h ("ri" = Roger Ivey)
			  ES = segment of driver
			  CF set
	    2F64h ("/d") disable the driver
		  Return: AH = 0Ch
			  ES:BX = pointer to activation flag (it is set to 0:
				  set it to 1 to enable the driver again)
			  CX = 7269h
			  CF set
	    2F75h ("/u") unload the driver (restore interrupts & free memory)
		  Return: AH = 0Ch
			  DL = 55h ("U") if successful
			     = 00h	   if fails
			  CX = 7269h
			  ES = segment of driver
			  CF set
			  AL, BX, DH, and DI destroyed
Program: XDF is a TSR provided with PC-DOS 7.0 to support XDF 1.84M disks,
	  developed by Roger D. Ivey
Note:	After disabling or enabling the driver, a disk change must be performed
	  or simulated to reset the driver.
--------B-1319-------------------------------
INT 13 - FIXED DISK - PARK HEADS ON ESDI DRIVE (XT286,PS)
	AH = 19h
	DL = drive
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
SeeAlso: AH=11h
--------d-1319-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - REINITIALIZE DRIVE
	AH = 19h
	DL = hard drive ID
Return: CF set on error
	    AH = status code (see #00234 at AH=01h)
	CF clear if successful
	    AH = disk type (03h = fixed disk)
	    CX:DX = number of 512-byte sectors
Notes:	sends SCSI Read Capacity command to get number of logical blocks and
	  adjusts the result for 512-byte sectors
	displays either "Error in Read Capacity Command" or "nnn Bytes per
	  sector" (nnn=256 or 512, the only sizes supported in the translation
	  code)
	should probably be called when a removable device has its media changed
	returns the same values as AH=15h
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=15h,AH=1Ah,INT 4F/AX=8100h
--------d-131A-------------------------------
INT 13 - ESDI FIXED DISK - FORMAT UNIT (PS)
	AH = 1Ah
	AL = defect table entry count
	CL = format modifiers (see #00250)
	DL = drive (80h,81h)
	ES:BX -> defect table (see #00251), ignored if AL=00h
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
Note:	if periodic interrupt selected, INT 15/AH=0Fh is called after each
	  cylinder is formatted
SeeAlso: AH=07h,INT 15/AH=0Fh

Bitfields for ESDI format modifiers:
Bit(s)	Description	(Table 00250)
 4	generate periodic interrupt
 3	perform surface analysis
 2	update secondary defect map
 1	ignore secondary defect map
 0	ignore primary defect map

Format of defect table entry [array]:
Offset	Size	Description	(Table 00251)
 00h  3 BYTEs	relative sector address (little-endian)
 03h	BYTE	flags and defect count
		bit 7: last logical sector on track
		bit 6: first logical sector on track
		bit 5: last logical sector on cylinder
		bit 4: logical sectors are pushed onto next track
		bits 3-0: number of defects pushed from previous cylinder
--------d-131A-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - GET SCSI PARTIAL MEDIUM CAPACITY
	AH = 1Ah
	CH = track (bits 8,9 in high bits of CL)
	CL = sector (01h to number of sectors/track for drive)
	DH = head
	DL = hard drive ID
Return: CF set on error
	AH = status code (see #00234 at AH=01h)
	CX:DX = logical block number of last quickly-accessible block after
		given block
Notes:	sends SCSI Read Capacity command with the PMI bit set to obtain the
	  logical block address of the last block after which a substantial
	  delay in data transfer will be encountered (usually the last block
	  on the current cylinder).  No translation to 512 byte sectors is
	  performed on the result if data is stored on the disk in other than
	  512 byte sectors.
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=15h,AH=19h"SCSI"
--------d-131B-------------------------------
INT 13 - ESDI FIXED DISK - GET MANUFACTURING HEADER
	AH = 1Bh
	AL = number of sectors to read
	DL = drive
	ES:BX -> buffer for manufacturing header (defect list)
Return: CF set on error
	CF clear if successful
	AH = status
Note:	manufacturing header format (Defect Map Record format) can be found
	  in IBM 70MB, 115MB Fixed Disk Drives Technical Reference
	the first sector read contains the manufacturing header with the number
	  of defect entries and the beginning of the defect map; the remaining
	  sectors contain the remainder of the defect map
--------d-131B-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - GET POINTER TO SCSI DISK INFO BLOCK
	AH = 1Bh
	DL = hard drive ID
Return: CF set on error
	    AH = status code (see #00234 at AH=01h)
	CF clear if successful
	    ES:BX -> SCSI disk information block (see #00252)
Notes:	also sets a non-resettable flag which prevents some controller messages
	  from being displayed
	the TMC-950 does not support any Future Domain BIOS calls; instead,
	  it provides a full CAM implementation (see INT 4F/AX=8100h)
SeeAlso: AH=18h"SCSI",AH=1Ch"SCSI"

Format of Future Domain SCSI disk information block:
Offset	Size	Description	(Table 00252)
 00h	BYTE	drive physical information (see #00253)
 01h	WORD	translated number of cylinders
 03h	BYTE	translated number of heads
 04h	BYTE	translated number of sectors per track (17, 34, or 63)
 05h	BYTE	drive address
		bits 0-2: logical unit number
		bits 3-5: device number
 06h	BYTE	01h at initialization
 07h	BYTE	sense code byte 00h, or extended sense code byte 0Ch
 08h	BYTE	00h
 09h	BYTE	00h or extended sense code byte 02h (sense key)
 0Ah	BYTE	00h
 0Bh 10 BYTEs	copy of Command Descriptor Block (CDB) (see #03236,#03237)
 15h	DWORD	translated number of sectors on device

Bitfields for Future Domain SCSI device physical information:
Bit(s)	Description	(Table 00253)
 0	???
 1	device uses parity
 2	256 bytes per sector instead of 512
 3	don't have capacity yet???
 4	disk is removable
 5	logical unit number is not present
--------d-131C-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - GET POINTER TO FREE CONTROLLER RAM
	AH = 1Ch
	DL = hard drive ID (any valid SCSI hard disk)
Return: CF set on error
	    AH = status code (see #00234 at AH=01h)
	CF clear if successful
	    ES:BX -> first byte of free RAM on controller
Notes:	the Future Domain TMC-870 contains 1024 bytes of RAM at offsets 1800h
	  to 1BFFh on-board the controller for storing drive information and
	  controller status; ES:BX points to the first byte available for other
	  uses
	ES contains the segment at which the controller resides; the
	  controller's two memory-mapped I/O ports are at offsets 1C00h, 1E00h
SeeAlso: AH=1Bh"SCSI"
--------d-131C-------------------------------
INT 13 U - ESDI FIXED DISK - ???
	AH = 1Ch
	AL = subfunction (01h-06h)
	DL = drive (80h,81h)
	???
Return: ???
Note:	these functions perform a controller command 0612h without DMA
SeeAlso: AX=1C08h,PORT 3510h"ESDI"
--------d-131C08-----------------------------
INT 13 U - ESDI FIXED DISK - GET COMMAND COMPLETION STATUS
	AX = 1C08h
	DL = drive (80h,81h)
	ES:BX -> buffer for Command Complete Status Block (see #00254)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
SeeAlso: AX=1C09h,AX=1C0Ah,PORT 3510h"ESDI"

Format of ESDI Command Complete Status Block:
Offset	Size	Description	(Table 00254)
 00h	BYTE	07h
 01h	BYTE	size of block in words (07h)
 02h	BYTE	command error code (see #00255)
 03h	BYTE	command status code (see #00256)
 04h	BYTE	device error code, group 1 (see #00257)
 05h	BYTE	device error flags, group 2 (see #00258)
 06h	WORD	number of unprocessed sectors due to abnormal termination
 08h	DWORD	last Relative Sector Address processed by command
 0Ch	WORD	number of sectors corrected by ECC codes

(Table 00255)
Values for ESDI command error code:
 00h	successful
 01h	parameter invalid
 02h	unknown function
 03h	unsupported command
 04h	command cancelled
 05h	unknown function
 06h	controller diagnostics failed
 07h	formatting failed
 08h	format error in primary map
 09h	format error in secondary map
 0Ah	diagnostic failure during formatting
 0Bh	warning: secondary map too large during formatting
 0Ch	warning: non-zero defect
 0Dh	system checksum error during formatting
 0Eh	warning: incompatible device
 0Fh	warning: push table overflowed
 10h	warning: more than 15 sectors pushed to next cylinder
 11h	internal hardware error
 12h	warning: errors found while verifying sectors
 13h	invalid device
 FFh	device error

(Table 00256)
Values for ESDI command status code:
 01h	successful
 03h	successful after ECC
 05h	successful after retries
 06h	format partially completed
 07h	successful after ECC and retries
 08h	command completed with warning (see #00255)
 09h	abort complete
 0Ah	reset complete
 0Bh	data transfer ready (no status block)
 0Ch	command completed with failure (see #00257,#00258)
 0Dh	DMA error
 0Eh	command block error (see #00255)
 0Fh	bad attention code
SeeAlso: #00257

(Table 00257)
Values for ESDI device error code, group 1:
 00h	successful
 01h	seek fault detected by device
 02h	interface fault
 03h	sector ID not found
 04h	disk not formatted
 05h	unrecoverable ECC error
 06h	ECC error in sector ID
 07h	invalid relative sector address
 08h	timeout
 09h	sector defective
 0Ah	disk changed (removable media)
 0Bh	selection error
 0Ch	write protected (removable media)
 0Dh	write fault
 0Eh	read fault
 0Fh	no index or sector pulse
 10h	device not ready
 11h	seek error detected by adapter
 12h	bad format
 13h	volume overflow
 14h	data address mark not found
 15h	sector ID not found
 16h	missing device configuration data
 17h	first/last relative sector flags missing
 18h	track empty
 81h	timeout while waiting for stop
 82h	timeout while waiting for end of data transfer
 84h	stopped awaiting data transfer during formatting
 85h	timeout while waiting for head switch
 86h	timeout while awaiting DMA completion
SeeAlso: #00256,#00258

Bitfields for ESDI device error flags, group 2:
Bit(s)	Description	(Table 00258)
 7-5	unused
 4	ready
 3	selected
 2	write fault
 1	on track 0
 0	seek/command complete
SeeAlso: #00257
--------d-131C09-----------------------------
INT 13 U - ESDI FIXED DISK - GET DEVICE STATUS
	AX = 1C09h
	DL = drive (80h,81h)
	ES:BX -> buffer for Device Status Block (see #00259)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
SeeAlso: AX=1C08h,AX=1C0Ah,PORT 3510h"ESDI"

Format of ESDI Device Status Block:
Offset	Size	Description	(Table 00259)
 00h	BYTE	08h
 01h	BYTE	number of words in block (09h)
 02h	BYTE	error flags
 03h	BYTE	unused
 04h	BYTE	command error code (see #00255)
 05h	BYTE	command status code (see #00256)
 06h	WORD	ESDI standard status
 08h  5 WORDs	ESDI vendor-specific status codes
--------d-131C0A-----------------------------
INT 13 U - ESDI FIXED DISK - GET DEVICE CONFIGURATION
	AX = 1C0Ah
	DL = drive (80h,81h)
	ES:BX -> buffer for Drive Configuration Status Block (see #00260)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
Note:	device configuration format can be found in IBM ESDI Fixed Disk Drive
	  Adapter/A Technical Reference
SeeAlso: AX=1C08h,AX=1C0Bh,AX=1C0Ch

Format of ESDI Drive Configuration Status Block:
Offset	Size	Description	(Table 00260)
 00h	BYTE	09h
 01h	BYTE	number of words in block (06h)
 02h	BYTE	flags
 03h	BYTE	number of spare sectors per cylinder
 04h	DWORD	total number of usable sectors
 08h	WORD	total number of cylinders
 0Ah	BYTE	tracks per cylinder
 0Bh	BYTE	sectors per track
--------d-131C0B-----------------------------
INT 13 U - ESDI FIXED DISK - GET ADAPTER CONFIGURATION
	AX = 1C0Bh
	ES:BX -> buffer for Controller Configuration Status Block (see #00261)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
SeeAlso: AX=1C0Ch

Format of ESDI Controller Configuration Status Block:
Offset	Size	Description	(Table 00261)
 00h	BYTE	E9h
 01h	BYTE	number of words in block (06h)
 02h	WORD	unused (0000h)
 04h	DWORD	controller microcode revision level
 08h  2 WORDs	unused (0000h)
--------d-131C0C-----------------------------
INT 13 U - ESDI FIXED DISK - GET POS INFORMATION
	AX = 1C0Ch
	ES:BX -> buffer for POS Information Status Block (see #00262)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
SeeAlso: AX=1C0Bh

Format of ESDI POS Information Status Block:
Offset	Size	Description	(Table 00262)
 00h	BYTE	EAh
 01h	BYTE	number of words in block (05h)
 02h	WORD	magic value FFDDh
 04h	BYTE	POS register 3
 05h	BYTE	POS register 2
 06h	BYTE	POS register 5 (unused, FFh)
 07h	BYTE	POS register 4 (unused, FFh)
 08h	BYTE	POS register 7 (unused, FFh)
 09h	BYTE	POS register 6 (unused, FFh)
--------d-131C0D-----------------------------
INT 13 U - ESDI FIXED DISK - ???
	AX = 1C0Dh
	DL = drive (80h,81h)
	???
Return: ???
Note:	invokes controller command 0614h without DMA
SeeAlso: AH=1Ch"ESDI",AX=1C0Fh,PORT 3510h"ESDI"
--------d-131C0E-----------------------------
INT 13 U - ESDI FIXED DISK - TRANSLATE RBA TO ABA
	AX = 1C0Eh
	CH = low 8 bits of cylinder number
	CL = sector number, high two bits of cylinder number in bits 6 and 7
	DH = head number
	DL = drive number (80h,81h)
	ES:BX -> ABA number
Return: CF set on error
	CF clear if successful
	AH = status (see #00234 at AH=01h)
Note:	ABA (absolute block address) format can be found in IBM ESDI Adapter
	  Technical Reference by using its Device Configuration Status Block
SeeAlso: AX=1C08h,AX=1C0Fh,PORT 3510h"ESDI"
--------d-131C0F-----------------------------
INT 13 U - ESDI FIXED DISK - ???
	AX = 1C0Fh
	DL = drive (80h,81h)
	???
Return: ???
Note:	invokes controller command 0614h without DMA
SeeAlso: AH=1Ch"ESDI",AX=1C0Dh,AX=1C12h,PORT 3510h"ESDI"
--------d-131C12-----------------------------
INT 13 U - ESDI FIXED DISK - ???
	AX = 1C12h
	DL = drive (80h,81h)
	???
Return: ???
Note:	invokes controller command 0612h without DMA
SeeAlso: AH=1Ch"ESDI",AX=1C0Fh,PORT 3510h"ESDI"
--------c-131D-------------------------------
INT 13 - IBMCACHE.SYS - CACHE STATUS
	AH = 1Dh
	AL = subfunction
	    01h get status record
		DL = drive???
		Return: ES:BX -> status record (see #00263)
			CF set on error
			    AH = error code
	    02h set cache status
		ES:BX -> status record (see #00263)
		DL = drive???
		Return: CF set on error

Format of IBMCACHE.SYS status record:
Offset	Size	Description	(Table 00263)
 00h	DWORD	total number of read requests
 04h	DWORD	total number of hits
 08h	DWORD	number of physical disk reads
 0Ch	DWORD	total number of sectors requested by physical disk reads
 10h  6 BYTEs	???
 16h	DWORD	pointer to start of error list (see #00264)
 1Ah	DWORD	pointer to end of error list
 1Eh	WORD	???
 20h	BYTE	using extended memory if nonzero
 21h	BYTE	???
 22h  4 BYTEs	ASCII version number
 26h	WORD	cache size in KB
 28h	WORD	sectors per page

Format of IBMCACHE.SYS error list:
Offset	Size	Description	(Table 00264)
 00h	DWORD	relative block address of bad page
 04h	BYTE	drive
 05h	BYTE	sector bit-map
 06h	WORD	next error
--------d-131F-------------------------------
INT 13 - SyQuest - DOOR LATCH/DOOR BUTTON DETECT
	AH = 1Fh
	AL = subfunction
	    00h allow media removal
	    01h prevent media removal (lock door)
	DL = drive ID (bit 7 set for hard disks)
Return: CF clear if successful
	    AH = 00h
	CF set on error
	    AH = error code
		00h successful
		01h invalid function request
		80h timeout
		DDh media change requested
SeeAlso: AH=12h"SyQuest",AH=13h"SyQuest",AH=59h"SyQuest"
--------d-1320-------------------------------
INT 13 - DISK - ??? (Western Digital "Super BIOS")
	AH = 20h
	???
Return: ???
Notes:	returns some kind of status related to whether the drive contains its
	  default media type
	QEMM v6.00 calls INT 13/AX=2000h/DL=81h in some cases
--------b-1320-------------------------------
INT 13 U - Compaq, ATAPI Removable Media Device - GET CURRENT MEDIA FORMAT
	AH = 20h
	DL = drive number (00h,01h)
Return: CF clear if successful
	    AL = media type (see #00265)
	    AH = 00h
	CF set on error
	    AH = error code
		01h invalid request
		30h drive does not support media sense
		31h no such drive / media not present
		32h non-default media / drive does not support media type
Notes:	this function is supported by the 1993/3/8 Compaq ROM BIOS, but only
	  partially (AL is always 00h when successful) by the 1993/8/3 version
	this function is also supported by some recent versions of the Phoenix
	  486 BIOS
	this function does not seem to be supported by some Toshiba BIOSes
	  (at least before 1995, maybe some laptops??? with 1.44 MB floppies),
	  because S/DOS 1.0 contains code to bypass a call to this function,
	  always assuming the drive would not support media sense.
SeeAlso: AH=15h

(Table 00265)
Values for Compaq/ATAPI diskette media type:
 03h	720K  (1M unformatted)
 04h	1.44M (2M unformatted)
 06h	2.88M (4M unformatted)
 0Ch	360K
 0Dh	1.2M
 0Eh	Toshiba 3mode
 0Fh	NEC 3mode (1024-byte sectors)
 10h	ATAPI Removable Media Device
--------c-1320-------------------------------
INT 13 u - QUICKCACHE II v4.20 - DISMOUNT
	AH = 20h
	AL = drive (00h = A:, etc. or 7Fh for all removable drives???
				   or FFh for all drives)
Return: AX = status (0000h successful)
Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
	  Associates, Inc.
Desc:	flush any dirty buffers for the specified drive(s) and then discard
	  those sector buffers
SeeAlso: AH=21h"QUICKCACHE",AH=22h"QUICKCACHE",AH=28h
--------d-1321-------------------------------
INT 13 - HARD DISK - PS/1 and newer PS/2 - READ MULTIPLE DISK SECTORS
	AH = 21h
	AL = number of sectors to write
	CH = low byte of 12-bit cylinder number
	CL = starting sector (bits 0-5) and bits 8-9 of cylinder (bits 6-7)
	DH = head number (bits 0-5) and bits 10-11 of cylinder (bits 6-7)
	DL = drive number (80h,81h)
	ES:BX -> buffer for data to be read
Return: CF clear if successful
	    ES:BX buffer filled
	CF set on error
	AH = status (see #00234 at AH=01h)
Desc:	read from the disk using the Multiple Block mode available on newer
	  IDE drives and some hard disk controllers, which generates an
	  interrupt only after the end of transferring a group of sectors
	  rather than after each sector
Notes:	must call AH=24h"PS/1" before using this function
	input values in CL and DH are not range-checked
	the byte at address 0040h:0074h is set to the status of the operation
SeeAlso: AH=02h,AH=22h"PS/1",AH=23h"PS/1",AH=24h"PS/1"
--------c-1321-------------------------------
INT 13 u - QUICKCACHE II v4.20 - FLUSH CACHE
	AH = 21h
Return: AX = status (0000h successful)
Desc:	immediately write all dirty sectors back to disk
Note:	this is one out of several cache flush calls issued by the PTS-DOS 6.51
	  and S/DOS 1.0 kernel before rebooting. It is called with DL=80h and
	  conflicts with the PS/2 function of the same function number, because
	  the kernel does not perform Quickcache's installation check first.
SeeAlso: AH=25h"QUICKCACHE",AH=2Eh,AH=2Fh
--------d-1322-------------------------------
INT 13 - HARD DISK - PS/1 and newer PS/2 - WRITE MULTIPLE DISK SECTORS
	AH = 22h
	AL = number of sectors to write
	CH = low byte of 12-bit cylinder number
	CL = starting sector (bits 0-5) and bits 8-9 of cylinder (bits 6-7)
	DH = head number (bits 0-5) and bits 10-11 of cylinder (bits 6-7)
	DL = drive number (80h,81h)
	ES:BX -> buffer containing data to be written
Return: CF clear if successful
	CF set on error
	AH = status (see #00234 at AH=01h)
Desc:	write to the disk using the Multiple Block mode available on newer
	  IDE drives and some hard disk controllers, which generates an
	  interrupt only after the end of transferring a group of sectors
	  rather than after each sector
Notes:	must call AH=24h"PS/1" before using this function
	input values in CL and DH are not range-checked
	the byte at address 0040h:0074h is set to the status of the operation
SeeAlso: AH=03h,AH=21h"PS/1",AH=23h"PS/1",AH=24h"PS/1"
--------c-1322-------------------------------
INT 13 u - QUICKCACHE II v4.20 - ENABLE/DISABLE CACHE
	AH = 22h
	AL = new state (00h disabled, 01h enabled)
Return: AX = status (0000h successful)
Note:	enables/disables caching of all drives
SeeAlso: AH=2Ch,AH=2Dh,AH=32h,AH=33h,AH=A3h,AH=A4h
--------d-1323-------------------------------
INT 13 U - HARD DISK - PS/1 and newer PS/2 - SET CONTROLLER FEATURES REGISTER
	AH = 23h
	AL = feature number (see #00266)
	DL = drive number (80h,81h)
	???
Return: CF clear if successful
	CF set on error
	AH = status (see #00234 at AH=01h)
SeeAlso: AH=21h"PS/1",AH=22h"PS/1",AH=24h"PS/1",AH=25h"PS/1"

(Table 00266)
Values for PS/1 hard disk feature number:
 01h	select 8-bit data transfers instead of 16-bit
 02h	enable write cache
 22h	Write Same, user-specified area
 33h	disable retries
 44h	set number of ECC bytes for read long/write long (see AH=0Ah,AH=0Bh)
 54h	set cache segments
 55h	disable lookahead
 66h	disable reverting to power-on defaults
 77h	disable error correctioni
 81h	select 16-bit data transfers (default)
 82h	disable write cache
 88h	enable error correction (default)
 99h	enable retries (default)
 AAh	enable lookahead
 BBh	set ECC length for read long/write long to four bytes
 CCh	enable reverting to power-on defaults
 DDh	Write Same, entire disk
SeeAlso: #P0535
--------c-1323-------------------------------
INT 13 U - QUICKCACHE II v4.20 - GET ??? ADDRESS
	AH = 23h
Return: AX = status (0000h successful)
	ES = segment of ??? data
--------d-1324-------------------------------
INT 13 - HARD DISK - PS/1 and newer PS/2 - SET MULTIPLE MODE
	AH = 24h
	AL = number of sectors per block (2,4,8,16)
	DL = drive number (80h,81h)
Return: CF clear if successful
	CF set onerror
	AH = status (see #00234 at AH=01h)
Desc:	specify how many sectors the controller should transfer as a group
	  between operation-complete interrupts when using the Read Multiple
	  and Write Multiple functions (AH=21h,AH=22h)
Notes:	set the number of sectors to 0 to disable multiple-transfer mode
	the maximum value for the block size depends on the fixed disk
	  drive type.  The value is stored in byte 15h of the fixed disk
	  drive parameter table that is created by POST.
	the byte at address 0040h:0074h is set to status of operation.
SeeAlso: AH=21h"PS/1",AH=22h"PS/1",AH=23h"PS/1",AH=25h"PS/1"
--------c-1324-------------------------------
INT 13 u - QUICKCACHE II v4.20 - SET SECTORS
	AH = 24h
	BX = new number of sector buffers in cache
Return: AX = status
	    0000h successful
	    0001h failed--size adjusted
	    8000h cache cannot be resized while enabled
SeeAlso: AH=36h
--------d-1325-------------------------------
INT 13 - HARD DISK - PS/1 and newer PS/2 - IDENTIFY DRIVE
	AH = 25h
	DL = drive number (80h,81h)
	ES:BX-> 512 byte buffer for reply packet
Return: CF clear if successful
	CF set on error
	AH = status (see #00234 at AH=01h)
	buffer filled with ATA/IDE-style drive information block (see #00267)
Desc:	retrieves the 256 words of drive data stored on an IDE hard disk
Notes:	the byte at address 0040h:0074h is set to the status of the operation
	IBM officially classifies this function as optional
SeeAlso: AH=23h"PS/1"

Format of drive information block:
Offset	Size	Description	(Table 00267)
 00h	WORD	general drive configuration (see #00268)
 02h	WORD	number of cylinders
 04h	WORD	reserved
 06h	WORD	number of heads
 08h	WORD	number of unformatted bytes per track
 0Ah	WORD	number of unformatted bytes per sector
 0Ch	WORD	number of sectors per track
 0Eh  6 BYTEs	vendor unique
 14h 20 BYTEs	serial number in ASCII, 0000h=not specified)
 28h	WORD	buffer type
 2Ah	WORD	buffer size in 512 byte increments (0000h=not specified)
 2Ch	WORD	number of ECC bytes passed on Read/Write Long cmds
		0000h = not specified
 2Eh  8 BYTEs	firmware revision in ASCII, 0000h=not specified
 36h 40 BYTEs	model number in ASCII, 0000h=not specified
 5Eh	WORD	bits 15-8  Vendor Unique
		bits 7-0  00h = Read/Write Multiple commands not implemented
			  xxh = Maximum number of sectors that can be
			  transferred per interrupt on Read and Write
			  Multiple commands
 60h	WORD	0000h = cannot perform doubleword I/O
		0001h = can perform doubleword I/O
 62h	WORD	capabilities
		bit 15-9  0=reserved
		bit 8  1=DMA Supported
		bit 7-0	 Vendor Unique
 64h	WORD	reserved
 66h	WORD	bits 15-8 PIO data transfer cycle timing mode
		bits 7-0  Vendor Unique
 68h	WORD	bits 15-8 DMA data transfer cycle timing mode
		bits 7-0  Vendor Unique
 6Ah	WORD	bits 15-1 reserved
		bit 0	1=the fields reported in tranlation mode are valid
			0=the fields reported in translation mode may be valid
 6Ch	WORD	number of current cylinders
 6Eh	WORD	number of current heads
 70h	WORD	number of current sectors per track
 72h	DWORD	current capacity in sectors
 76h	WORD	reserved
 78h 136 BYTEs	not defined by ATA spec 2.6
100h 64 BYTEs	vendor unique
140h 96 BYTEs	reserved
Note:	the above description is as in the ATA (AT Attachment) Specification.
SeeAlso: #P0516

Bitfields for general drive configuration:
Bit(s)	Description	(Table 00268)
 15	0   reserved for non-magnetic drives
 14	format speed tolerance gap required
 13	track offset option available
 12	data strobe offset option available
 11	rotational speed tolerance is > 0.5%
 10	disk transfer rate > 10 Mbs
 9	disk transfer rate > 5Mbs but <= 10Mbs
 8	disk transfer rate <= 5Mbs
 7	removable cartridge drive
 6	fixed drive
 5	spindle motor control option implemented
 4	head switch time > 15 usec
 3	not MFM encoded
 2	soft sectored
 1	hard sectored
 0	reserved (0)
--------c-1325-------------------------------
INT 13 u - QUICKCACHE II v4.20 - SET FLUSH INTERVAL
	AH = 25h
	BX = interval
Return: AX = status (0000h successful)
Desc:	specify how often the cache should write dirty buffers to disk when
	  buffered writes are enabled
SeeAlso: AH=21h"QUICKCACHE",AH=2Ch,AH=2Eh
--------c-1326-------------------------------
INT 13 U - QUICKCACHE II v4.20 - UNINSTALL
	AH = 26h
Return: AX = status
	    0000h successful
	    0001h-00FFh interrupt vector which was hooked by another TSR
SeeAlso: AH=27h
--------c-1327--BX0000-----------------------
INT 13 u - QUICKCACHE II v4.20 - INSTALLATION CHECK
	AH = 27h
	BX = 0000h
Return: AX = 0000h if installed
	BX nonzero if installed
	    BH = major version
	    BL = binary minor version
Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
	  Associates, Inc.
SeeAlso: AH=26h,AH=A0h,INT 16/AX=FFA5h/CX=1111h
--------c-1328-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET AUTOMATIC DISMOUNT
	AH = 28h
	AL = new state (00h disabled, 01h enabled)
Return: AX = status (0000h successful)
SeeAlso: AH=20h"QUICKCACHE"
--------c-1329-------------------------------
INT 13 U - QUICKCACHE II v4.20 - NOP
	AH = 29h
Return: AX = 0000h
--------c-132A-------------------------------
INT 13 u - QUICKCACHE II v4.20 - SET BUFFER SIZE
	AH = 2Ah
	AL = buffer size (1-30)
Return: AX = status (0000h successful)
Desc:	specify the number of cache sector buffers to dedicate to buffered read
	  and write operations
SeeAlso: AH=2Ch,AH=2Dh,AH=39h,AH=3Ah
--------c-132B-------------------------------
INT 13 U - QUICKCACHE II v4.20 - DRIVE ACCESS SOUNDS
	AH = 2Bh
	AL = new state (00h disabled, 01h enabled)
Return: AX = status (0000h successful)
--------c-132C-------------------------------
INT 13 u - QUICKCACHE II v4.20 - SET BUFFERED WRITES
	AH = 2Ch
	AL = new state (00h disabled, 01h enabled)
Return: AX = status (0000h successful)
Desc:	specify whether the cache should delay disk writes
Note:	this function enables or disables delayed writes for all drives; use
	  AH=38h to change a single drive
SeeAlso: AH=25h"QUICKCACHE",AH=2Dh,AH=2Eh,AH=38h
--------c-132D-------------------------------
INT 13 u - QUICKCACHE II v4.20 - SET BUFFERED READ
	AH = 2Dh
	AL = new state (00h disabled, 01h enabled)
Return: AX = status (0000h successful)
Desc:	specify whether the cache should attempt to read ahead of actual
	  requests
Note:	this function enables or disables read-ahead for all drives; use AH=37h
	  to change a single drive
SeeAlso: AH=2Ch,AH=37h
--------c-132E-------------------------------
INT 13 u - QUICKCACHE II v4.20 - SET FLUSH COUNT
	AH = 2Eh
	BX = flush count
Return: AX = status (0000h successful)
Desc:	specify how many dirty sectors the cache should write after each flush
	  interval (see AH=25h"QUICKCACHE") when buffered writes are enabled
SeeAlso: AH=21h"QUICKCACHE",AH=25h"QUICKCACHE",AH=2Ch
--------c-132F-------------------------------
INT 13 - QUICKCACHE II v4.20 - FORCE IMMEDIATE INCREMENTAL FLUSH
	AH = 2Fh
Return: AX = status (0000h successful)
Desc:	immediately flush up to "flushcount" dirty sectors to disk as if the
	  flush interval had expired
SeeAlso: AH=21h"QUICKCACHE"
--------c-1330-------------------------------
INT 13 u - QUICKCACHE II v4.20 - GET INFO
	AH = 30h
	AL = what to get
	    00h system info (see #00269)
	    01h drive info (see #00270)
	    02h access frequency (array of 30 words)
	    03h drive index
		(array of 32 bytes indicating BIOS drive for DOS drive)
	DS:DX -> buffer for info
Return: AX = status (0000h successful, 8000h invalid info specifier)
Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
	  Associates, Inc.

Format of QUICKCACHE II system info:
Offset	Size	Description	(Table 00269)
 00h	BYTE	flag: cache enabled
 01h	BYTE	flag: buffered writes enabled
 02h	BYTE	flag: buffered reads enabled
 03h	BYTE	flag: sounds enabled
 04h	BYTE	flag: autodismount enabled
 05h	BYTE	???
 06h	BYTE	flag: ???
 07h	BYTE	flag: ???
 08h	BYTE	flag: "em_assigned"
 09h	BYTE	flag: emulated EMS
 0Ah	BYTE	single sector bonus
 0Bh	BYTE	"sticky_max"
 0Ch	BYTE	write sector bonus
 0Dh	BYTE	bonus threshold
 0Eh	WORD	flush interval
 10h	WORD	flush count
 12h	WORD	reserve pool size
 14h	WORD	remaining space in reserve pool
 16h	WORD	required free memory
 18h	WORD	total cache sectors
 1Ah	WORD	dirty cache sectors
 1Ch	BYTE	trace buffer size
 1Dh	BYTE	reserved (padding)
SeeAlso: #00270

Format of QUICKCACHE II drive info [16-element array, one element]:
Offset	Size	Description	(Table 00270)
 00h	BYTE	DOS drive number
 01h	BYTE	BIOS drive number
 02h	BYTE	maximum sector number
 03h	BYTE	maximum head number
 04h	BYTE	read buffer size
 05h	BYTE	write buffer size
 06h	BYTE	last status
 07h	BYTE	flag: enabled
 08h	BYTE	flag: buffered write enabled
 09h	BYTE	flag: buffered read enabled
 0Ah	BYTE	flag: in use (drive info is valid)
 0Bh	BYTE	flag: cylinder flush
 0Ch	BYTE	reserved (padding)
 0Dh	BYTE	sectors per track
 0Eh	WORD	sector size
 10h	WORD	sectors assigned
 12h	WORD	dirty sectors
 14h	WORD	reserved sectors
 16h	WORD	number of read errors
 18h	WORD	number of write errors
 1Ah	DWORD	"rio_count"
 1Eh	DWORD	number of cache misses
 22h	DWORD	"wio_count"
 26h	DWORD	"dio_count"
SeeAlso: #00269
--------c-1331-------------------------------
INT 13 U - QUICKCACHE II v4.20 - RESERVE MEMORY
	AH = 31h
	BX = number of paragraphs of conventional memory to reserve for apps
Return: AX = status (0000h successful)
--------c-1332-------------------------------
INT 13 U - QUICKCACHE II v4.20 - ENABLE CACHING FOR SPECIFIC DRIVE
	AH = 32h
	AL = drive number (00h=A:)
Return: AX = status (0000h successful)
SeeAlso: AH=22h"QUICKCACHE",AH=33h
--------c-1333-------------------------------
INT 13 U - QUICKCACHE II v4.20 - DISABLE CACHING FOR SPECIFIC DRIVE
	AH = 33h
	AL = drive number (00h=A:)
Return: AX = status (0000h successful)
SeeAlso: AH=22h"QUICKCACHE",AH=32h
--------c-1334-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SECTOR LOCKING
	AH = 34h
	AL = function
	    00h end sector locking/unlocking
	    01h lock all accessed sectors into cache
	    02h unlock all accessed sectors and discard from cache
Return: AX = status (0000h successful)
SeeAlso: AH=20h"QUICKCACHE",AH=35h
--------c-1335-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET LOCK POOL SIZE
	AH = 35h
	BX = number of sectors in lock pool
Return: AX = status (0000h successful)
Desc:	specify the number of cache sector buffers which may be dedicated to
	  data locked into the cache
SeeAlso: AH=34h
--------c-1336-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET TRACE BUFFER SIZE
	AH = 36h
	AL = new size of trace buffer
Return: AX = status (0000h successful)
Note:	called with AL=05h during an INT 13/AH=24h"QUICKCACHE" call
SeeAlso: AH=24h"QUICKCACHE"
--------c-1337-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET BUFFERED READS FOR SPECIFIC DRIVE
	AH = 37h
	AL = new state (00h disabled, else enabled)
	DL = drive number (00h = A:)
Return: AX = status (0000h successful)
SeeAlso: AH=2Dh,AH=38h
--------c-1338-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET BUFFERED WRITES FOR SPECIFIC DRIVE
	AH = 38h
	AL = new state (00h disabled, else enabled)
	DL = drive number (00h = A:)
Return: AX = status (0000h successful)
SeeAlso: AH=2Ch,AH=37h
--------c-1339-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET READ BUFFER SIZE FOR SPECIFIC DRIVE
	AH = 39h
	AL = new size of read buffer
	DL = drive number (00h = A:)
Return: AX = status (0000h successful)
Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
	  Associates, Inc.
SeeAlso: AH=2Ah,AH=3Ah
--------c-133A-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET WRITE BUFFER SIZE FOR SPECIFIC DRIVE
	AH = 3Ah
	AL = new size of write buffer
	DL = drive number (00h = A:)
Return: AX = status (0000h successful)
SeeAlso: AH=2Ah,AH=39h
--------c-133B-------------------------------
INT 13 U - QUICKCACHE II v4.20 - ENABLE/DISABLE ???
	AH = 3Bh
	AL = new state of ??? (01h enabled, else disabled)
Return: AX = status (0000h successful)
Note:	is affected by the flag reported at offset 05h of the system info
	  returned by AH=30h, and sets the flag at offset 06h
SeeAlso: AH=3Ch
--------c-133C-------------------------------
INT 13 U - QUICKCACHE II v4.20 - ENABLE/DISABLE ???
	AH = 3Ch
	AL = new state of ??? (01h enabled, else disabled)
Return: AX = status (0000h successful)
Note:	is affected by the flag reported at offset 05h of the system info
	  returned by AH=30h, and sets the flag at offset 07h
SeeAlso: AH=3Bh
--------c-133D-------------------------------
INT 13 U - QUICKCACHE II v4.20 - ENABLE/DISABLE CYLINDER FLUSH FOR DRIVE
	AH = 3Dh
	AL = new state (01h enabled, else disabled)
	DL = drive number (00h = A:)
Return: AX = status (0000h successful)
--------c-133E-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET SINGLE-SECTOR BONUS
	AH = 3Eh
	AL = new value for bonus
Return: AX = status (0000h successful)
Desc:	specify the bonus score to give to single-sector transfers in order to
	  keep those sectors in the cache longer
--------c-133F-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET BONUS THRESHOLD
	AH = 3Fh
	AL = new value for bonus threshold
Return: AX = status (0000h successful)
--------c-1340-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SET "sticky_max"
	AH = 40h
	AL = new value for "sticky_max"
Return: AX = status (0000h successful)
SeeAlso: AH=41h"QUICKCACHE"
--------d-1341--BX55AA-----------------------
INT 13 - IBM/MS INT 13 Extensions - INSTALLATION CHECK
	AH = 41h
	BX = 55AAh
	DL = drive (80h-FFh)
Return: CF set on error (extensions not supported)
	    AH = 01h (invalid function)
	CF clear if successful
	    BX = AA55h if installed
	    AH = major version of extensions
		01h = 1.x
		20h = 2.0 / EDD-1.0
		21h = 2.1 / EDD-1.1
		30h = EDD-3.0
	    AL = internal use
	    CX = API subset support bitmap (see #00271)
	    DH = extension version (v2.0+ ??? -- not present in 1.x)
Note:	the Phoenix Enhanced Disk Drive Specification v1.0 uses version 2.0 of
	  the INT 13 Extensions API
SeeAlso: AH=42h"INT 13 Ext",AH=48h"INT 13 Ext"

Bitfields for IBM/MS INT 13 Extensions API support bitmap:
Bit(s)	Description	(Table 00271)
 0	extended disk access functions (AH=42h-44h,47h,48h) supported
 1	removable drive controller functions (AH=45h,46h,48h,49h,INT 15/AH=52h)
	  supported
 2	enhanced disk drive (EDD) functions (AH=48h,AH=4Eh) supported
	extended drive parameter table is valid (see #00273,#00278)
 3-15	reserved (0)
--------c-1341-------------------------------
INT 13 U - QUICKCACHE II v4.20 - SAVE/RESTORE ???
	AH = 41h
	AL = direction
	    01h save to file
	    else restore from file
	ES:DI -> 1024-byte buffer for ???
Return: AX = status (0000h successful, 8000h failed)
Program: QUICKCACHE II is a shareware disk cache by P.R. Glassel and
	  Associates, Inc.
SeeAlso: AH=40h"QUICKCACHE"
--------d-1342-------------------------------
INT 13 - IBM/MS INT 13 Extensions - EXTENDED READ
	AH = 42h
	DL = drive number
	DS:SI -> disk address packet (see #00272)
Return: CF clear if successful
	    AH = 00h
	CF set on error
	    AH = error code (see #00234)
	    disk address packet's block count field set to number of blocks
	      successfully transferred
SeeAlso: AH=02h,AH=41h"INT 13 Ext",AH=43h"INT 13 Ext"

Format of disk address packet:
Offset	Size	Description	(Table 00272)
 00h	BYTE	size of packet (10h or 18h)
 01h	BYTE	reserved (0)
 02h	WORD	number of blocks to transfer (max 007Fh for Phoenix EDD)
 04h	DWORD	-> transfer buffer
 08h	QWORD	starting absolute block number
		(for non-LBA devices, compute as
		  (Cylinder*NumHeads + SelectedHead) * SectorPerTrack +
		  SelectedSector - 1
 10h	QWORD	(EDD-3.0, optional) 64-bit flat address of transfer buffer;
		  used if DWORD at 04h is FFFFh:FFFFh
--------N-134257DX1234-----------------------
INT 13 U - Beame&Whiteside BWLPD - INSTALLATION CHECK
	AX = 4257h ("BW")
	DX = 1234h
Return: BX = 414Ch if installed
Program: BWLPD is the printer daemon from the BW-NFS package
SeeAlso: INT 62/AH=00h"ETHDEV"
--------d-1343-------------------------------
INT 13 - IBM/MS INT 13 Extensions - EXTENDED WRITE
	AH = 43h
	AL = write flags
	   ---v1.0,2.0---
	   bit 0: verify write
	   bits 7-1 reserved (0)
	   ---v2.1+ ---
	   00h,01h write without verify
	   02h write with verify
	DL = drive number
	DS:SI -> disk address packet (see #00272)
Return: CF clear if successful
	    AH = 00h
	CF set on error
	    AH = error code (see #00234)
	    disk address packet's block count field set to number of blocks
	      successfully transferred
Note:	the BIOS returns CF set/AH=01h (invalid function) if verify is
	  requested but not supported
SeeAlso: AH=03h,AH=41h"INT 13 Ext",AH=42h"INT 13 Ext",AH=44h
--------d-1344-------------------------------
INT 13 - IBM/MS INT 13 Extensions - VERIFY SECTORS
	AH = 44h
	DL = drive number
	DS:SI -> disk address packet (see #00272)
Return: CF clear if successful
	    AH = 00h
	CF set on error
	    AH = error code (see #00234)
	    disk address packet's block count field set to number of blocks
	      successfully verified
SeeAlso: AH=04h,AH=41h"INT 13 Ext",AH=42h"INT 13 Ext",AH=47h
--------d-1345-------------------------------
INT 13 - IBM/MS INT 13 Extensions - LOCK/UNLOCK DRIVE
	AH = 45h
	AL = operation
	    00h lock media in drive
	    01h unlock media
	    02h check lock status
	DL = drive number
Return: CF clear if successful
	    AH = 00h
	    AL = lock state (00h = unlocked)
	CF set on error
	    AH = error code (see #00234)
Notes:	this function is required to be supported for any removable drives
	  numbered 80h or higher
	a device may be locked even if no media is present in the drive
	up to 255 locks may be placed on a drive, and the media will not
	  be physically unlocked until all locks have been removed
SeeAlso: AH=41h"INT 13 Ext",AH=46h,AH=49h,INT 15/AH=52h"INT 13 Extensions"
--------d-1346-------------------------------
INT 13 - IBM/MS INT 13 Extensions - EJECT MEDIA
	AH = 46h
	AL = 00h (reserved)
	DL = drive number
Return: CF clear if successful
	    AH = 00h
	CF set on error
	    AH = error code (see #00234)
SeeAlso: AH=49h,INT 15/AH=52h"INT 13 Extensions"
--------d-1347-------------------------------
INT 13 - IBM/MS INT 13 Extensions - EXTENDED SEEK
	AH = 47h
	DL = drive number
	DS:SI -> disk address packet (see #00272)
Return: CF clear if successful
	    AH = 00h
	CF set on error
	    AH = error code (see #00234)
Note:	this function initiates the seek, and may return before the seek
	  actually completes
SeeAlso: AH=0Ch,AH=42h"INT 13 Ext"
--------d-1348-------------------------------
INT 13 - IBM/MS INT 13 Extensions - GET DRIVE PARAMETERS
	AH = 48h
	DL = drive (80h-FFh)
	DS:SI -> buffer for drive parameters (see #00273)
Return: CF clear if successful
	    AH = 00h
	    DS:SI buffer filled
	CF set on error
	    AH = error code (see #00234)
BUGS:	several different Compaq BIOSes incorrectly report high-numbered
	  drives (such as 90h, B0h, D0h, and F0h) as present, giving them the
	  same geometry as drive 80h; as a workaround, scan through disk
	  numbers, stopping as soon as the number of valid drives encountered
	  equals the value in 0040h:0075h
	Dell machines using PhoenixBIOS 4.0 Release 6.0 fail to correctly
	  handle this function if the flag word at DS:[SI+2] is not 0000h
	  on entry
SeeAlso: AH=08h,AH=41h,AH=49h,MEM 0040h:0075h

Format of IBM/MS INT 13 Extensions drive parameters:
Offset	Size	Description	(Table 00273)
 00h	WORD	(call) size of buffer
		    (001Ah for v1.x, 001Eh for v2.x, 42h for v3.0)
		(ret) size of returned data
 02h	WORD	information flags (see #00274)
 04h	DWORD	number of physical cylinders on drive
 08h	DWORD	number of physical heads on drive
 0Ch	DWORD	number of physical sectors per track
 10h	QWORD	total number of sectors on drive
 18h	WORD	bytes per sector
---v2.0+ ---
 1Ah	DWORD	-> EDD configuration parameters (see #00278)
		FFFFh:FFFFh if not available
---v3.0 ---
 1Eh	WORD	signature BEDDh to indicate presence of Device Path info
 20h	BYTE	length of Device Path information, including signature and this
		  byte (24h for v3.0)
 21h  3 BYTEs	reserved (0)
 24h  4 BYTEs	ASCIZ name of host bus ("ISA" or "PCI")
 28h  8 BYTEs	ASCIZ name of interface type
		"ATA"
		"ATAPI"
		"SCSI"
		"USB"
		"1394" IEEE 1394 (FireWire)
		"FIBRE" Fibre Channel
 30h  8 BYTEs	Interface Path (see #00275)
 38h  8 BYTEs	Device Path (see #00276)
 40h	BYTE	reserved (0)
 41h	BYTE	checksum of bytes 1Eh-40h (two's complement of sum, which makes
		  the 8-bit sum of bytes 1Eh-41h equal 00h)
Note:	if the size is less than 30 on call, the final DWORD will not be
	  returned by a v2.x implementation; similarly for the Device Path info
SeeAlso: #00277,#03196

Bitfields for IBM/MS INT 13 Extensions information flags:
Bit(s)	Description	(Table 00274)
 0	DMA boundary errors handled transparently
 1	cylinder/head/sectors-per-track information is valid
 2	removable drive
 3	write with verify supported
 4	drive has change-line support (required if drive >= 80h is removable)
 5	drive can be locked (required if drive >= 80h is removable)
 6	CHS information set to maximum supported values, not current media
 15-7	reserved (0)
Note:	bits 4-6 are only valid if bit 2 is set
SeeAlso: #00273

Format of EDD v3.0 Interface Path:
Offset	Size	Description	(Table 00275)
---ISA---
 00h	WORD	16-bit base address
 02h  6 BYTEs	reserved (0)
---PCI---
 00h	BYTE	PCI bus number
 01h	BYTE	PCI device number
 02h	BYTE	PCI function number
 03h  5 BYTEs	reserved (0)
SeeAlso: #00273,#00276

Format of EDD v3.0 Device Path:
Offset	Size	Description	(Table 00276)
---ATA---
 00h	BYTE	flag: 00h = master, 01h = slave
 01h  7 BYTEs	reserved (0)
---ATAPI---
 00h	BYTE	flag: 00h = master, 01h = slave
 01h	BYTE	logical unit number
 02h  6 BYTEs	reserved (0)
---SCSI---
 00h	BYTE	logical unit number
 01h  7 BYTEs	reserved (0)
---USB---
 00h	BYTE	to be determined
 01h  7 BYTEs	reserved (0)
---IEEE1394---
 00h	QWORD	64-bit FireWire General Unique Identifier (GUID)
---FibreChannel---
 00h	QWORD	Word Wide Number (WWN)
SeeAlso: #00273,#00275

Format of Phoenix Enhanced Disk Drive Spec translated drive parameter table:
Offset	Size	Description	(Table 00277)
 00h	WORD	number of cylinders
 02h	BYTE	number of heads
 03h	BYTE	A0h (signature indicating translated table)
 04h	BYTE	number of physical sectors per track
 05h	WORD	starting write precompensation cylinder number
 07h	BYTE	reserved
 08h	BYTE	control byte (see #03198 at INT 41"DISK 0")
 09h	WORD	number of physical cylinders
 0Bh	BYTE	number of physical heads
 0Ch	WORD	cylinder number of landing zone
 0Eh	BYTE	number of logical sectors per track
 0Fh	BYTE	checksum
Program: the Phoenix Enhanced Disk Drive Specification is an addition to the
	  IBM/MS INT 13 extensions
SeeAlso: #00278,#03196

Format of Phoenix Enhanced Disk Drive Spec Fixed Disk Parameter Table:
Offset	Size	Description	(Table 00278)
 00h	WORD	physical I/O port base address
 02h	WORD	disk-drive control port address
 04h	BYTE	drive flags (see #00279)
 05h	BYTE	proprietary information
		bits 7-4 reserved (0)
		bits 3-0: Phoenix proprietary (used by BIOS)
 06h	BYTE	IRQ for drive (bits 3-0; bits 7-4 reserved and must be 0)
 07h	BYTE	sector count for multi-sector transfers
 08h	BYTE	DMA control
		bits 7-4: DMA type (0-2) as per ATA-2 specification
		bits 3-0: DMA channel
 09h	BYTE	programmed I/O control
		bits 7-4: reserved (0)
		bits 3-0: PIO type (1-4) as per ATA-2 specification
 0Ah	WORD	drive options (see #00280)
 0Ch  2 BYTEs	reserved (0)
 0Eh	BYTE	extension revision level (high nybble=major, low nybble=minor)
		(currently 10h for v1.0 and 11h for v1.1-3.0)
 0Fh	BYTE	2's complement checksum of bytes 00h-0Eh
		8-bit sum of all bytes 00h-0Fh should equal 00h
Note:	this structure is also called the Device Paramter Table Extension
	  (DPTE)
SeeAlso: #00277

Bitfields for Phoenix Enhanced Disk Drive Spec drive flags:
Bit(s)	Description	(Table 00279)
 7	reserved (1)
 6	LBA enabled
 5	reserved (1)
 4	drive is slave
 3-0	reserved (0)
SeeAlso: #00278,#00280

Bitfields for Phoenix Enhanced Disk Drive Spec drive options:
Bit(s)	Description	(Table 00280)
 0	fast PIO enabled
 1	fast DMA access enabled
 2	block PIO (multi-sector transfers) enabled
 3	CHS translation enabled
 4	LBA translation enabled
 5	removable media
 6	ATAPI device (CD-ROM)
 7	32-bit transfer mode
---v1.1+ ---
 8	ATAPI device uses DRQ to signal readiness for packet command
	(must be 0 if bit 6 is 0)
 10-9	translation type (must be 00 if bit 3 is 0)
	00 Phoenix bit-shifting translation
	01 LBA-assisted translation
	10 reserved
	11 proprietary translation
---v3.0---
 11	Ultra DMA access enabled
 15-12	reserved (0)
SeeAlso: #00278,#00279
--------d-1349-------------------------------
INT 13 - IBM/MS INT 13 Extensions - EXTENDED MEDIA CHANGE
	AH = 49h
	DL = drive number
Return: CF clear if media has not changed
	    AH = 00h
	CF set if media may have changed
	    AH = 06h (see #00234)
Note:	unlike AH=16h, any drive number may be specified
SeeAlso: AH=16h,AH=41h"INT 13 Ext",AH=46h
--------d-134A-------------------------------
INT 13 - Bootable CD-ROM - INITIATE DISK EMULATION
	AH = 4Ah
	AL = 00h
	DS:SI -> specification packet (see #00281)
Return: CF clear if successful
	CF set on error (drive will not be in emulation mode)
	AX = return codes
SeeAlso: AH=48h,AX=4B00h,AH=4Ch,AH=4Dh

Format of Bootable CD-ROM Specification Packet:
Offset	Size	Description	(Table 00281)
 00h	BYTE	size of packet in bytes (13h)
 01h	BYTE	boot media type (see #00282)
 02h	BYTE	drive number
		00h floppy image
		80h bootable hard disk
		81h-FFh nonbootable or no emulation
 03h	BYTE	CD-ROM controller number
 04h	DWORD	Logical Block Address of disk image to emulate
 08h	WORD	device specification (see also #00282)
		(IDE) bit 0: drive is slave instead of master
		(SCSI)	bits 7-0: LUN and PUN
			bits 15-8: bus number
 0Ah	WORD	segment of 3K buffer for caching CD-ROM reads
 0Ch	WORD	load segment for initial boot image
		if 0000h, load at segment 07C0h
 0Eh	WORD	number of 512-byte virtual sectors to load
		(only valid for AH=4Ch)
 10h	BYTE	low byte of cylinder count (for INT 13/AH=08h)
 11h	BYTE	sector count, high bits of cylinder count (for INT 13/AH=08h)
 12h	BYTE	head count (for INT 13/AH=08h)
SeeAlso: #00283,AH=08h

Bitfields for Bootable CD-ROM boot media type:
Bit(s)	Description	(Table 00282)
 3-0	media type
	0000 no emulation
	0001 1.2M diskette
	0010 1.44M diskette
	0011 2.88M diskette
	0100 hard disk (drive C:)
	other reserved
 5-4	reserved (0)
 6	image contains ATAPI driver
 7	image contains SCSI driver(s)
SeeAlso: #00281
--------d-134B00-----------------------------
INT 13 - Bootable CD-ROM - TERMINATE DISK EMULATION
	AX = 4B00h
	DL = drive number or 7Fh to terminate all emulations
	DS:SI -> empty specification packet (see #00281)
Return: CF clear if successful
	CF set on error (drive will still be in emulation mode)
	AX = return codes
	DS:SI specification packet filled
SeeAlso: AH=48h,AH=4Ah,AX=4B00h,AH=4Ch,AH=4Dh
--------d-134B01-----------------------------
INT 13 - Bootable CD-ROM - GET STATUS
	AX = 4B01h
	DL = drive number
	DS:SI -> empty specification packet (see #00281)
Return: CF clear if successful
	CF set on error
	AX = return codes
	DS:SI specification packet filled
Note:	same as AX=4B00h, but does not terminate emulation
SeeAlso: AH=48h,AH=4Ah,AX=4B00h,AH=4Ch,AH=4Dh
--------d-134C-------------------------------
INT 13 - Bootable CD-ROM - INITIATE DISK EMULATION AND BOOT
	AH = 4Ch
	AL = 00h
	DS:SI -> specification packet (see #00281)
Return: never, if successful
	CF set (error while attempting to boot)
	AX = error codes
SeeAlso: AH=48h,AH=4Ah,AX=4B00h,AH=4Dh
--------d-134D00-----------------------------
INT 13 - Bootable CD-ROM - RETURN BOOT CATALOG
	AX = 4D00h
	DS:SI -> command packet (see #00283)
Return: CF clear if successful
	CF set on error
	AX = return codes
SeeAlso: AH=48h,AH=4Ah,AX=4B00h,AH=4Ch

Format of Bootable CD-ROM "get boot catalog" command packet:
Offset	Size	Description	(Table 00283)
 00h	BYTE	size of packet in bytes (08h)
 01h	BYTE	number of sectors of boot catalog to read
 02h	DWORD	-> buffer for boot catalog
 06h	WORD	first sector in boot catalog to transfer
SeeAlso: #00281
--------d-134E-------------------------------
INT 13 - IBM/MS INT 13 Extensions v2.1+ - SET HARDWARE CONFIGURATION
	AH = 4Eh
	AL = function
	    00h enable prefetch
	    01h disable prefetch
	    02h set maximum PIO transfer mode
	    03h set PIO mode 0
	    04h set default PIO transfer mode
	    05h enable INT 13h DMA maximum mode
	    06h disable INT 13h DMA
	DL = drive number
Return: CF clear if successful
	    AH = 00h
	    AL = status
		00h command was safe (only affected specified drive)
		01h other devices are affected
	CF set on error
	    AH = error code (see #00234)
Note:	DMA and PIO modes are mutually exclusive, so selecting DMA disables
	  PIO (for either the specified device or all devices on that
	  controller), and selecting PIO disables DMA
SeeAlso: AH=41h"INT 13 Extensions",AX=5001h"Enhanced Disk Drive"
--------d-135001-----------------------------
INT 13 - Enhanced Disk Drive Spec v3.0 - SEND PACKET COMMAND
	AX = 5001h
	DL = drive number
	ES:BX -> command packet (see #00284)
Return: CF clear if successful
	    AH = 00h
	CF set on error
	    AH = error code
Desc:	send data to and from a serial packet-oriented device, such as IEEE1394
	  and USB
SeeAlso: AH=41h"INT 13 Extensions",AH=4Eh

Format of Enhanced Disk Drive Spec v3.0 command packet:
Offset	Size	Description	(Table 00284)
 00h	WORD	signature B055h
 02h	BYTE	length of packet in bytes
 03h	BYTE	reserved (0)
 04h  N BYTEs	formatted packet data
--------v-135001------------------------
INT 13 - VIRUS - "Andropinis" - INSTALLATION CHECK
	AX = 5001h
Return: AX = 0150h if resident
SeeAlso: AX=FD50h"VIRUS",INT 21/AX=0B56h
--------v-135342CX0001-----------------------
INT 13 - ScanBoot - INSTALLATION CHECK
	AX = 5342h ("SB")
	CX = 0001h
	DX = 0000h
Return: CF clear if ScanBoot installed
	   AX = 0000h
	   CX = serial number ("SW" if shareware release)
	   DX = version
	   BX,SI,ES destroyed
Program: ScanBoot is a virus-detection TSR by PanSoft
--------d-135501-----------------------------
INT 13 - Seagate ST01/ST02 - Inquiry
	AX = 5501h
	DH = number of bytes to transfer
	DL = drive ID (80h, 81h, ...)
	ES:BX -> buffer for results
Return: ES:BX buffer filled with the Inquiry results
Notes:	the ST01/ST02 BIOS does not return any success/failure indication,
	  so all commands must be assumed to have been successful
	the ST01/ST02 BIOS always maps its drives after the previous BIOS
	  drives without changing the BIOS drive count at 0040h:0075h
	this command is identical to the SCSI Inquiry command
--------d-135502-----------------------------
INT 13 - Seagate ST01/ST02 - RESERVED
	AX = 5502h
--------d-135503-----------------------------
INT 13 - Seagate ST01/ST01 - Set Device Type Qualifier (DTQ)
	AX = 5503h
	DH = DTQ byte (see #00285)
	DL = drive ID (80h, 81h, ...)
Return: nothing

Bitfields for DTQ byte:
Bit(s)	Description	(Table 00285)
 7	reserved
 6	SCSI drive attached
 5	reserved
 4	selected drive is ST225N/NP (Paired)
 3	selected drive is ST225N
 2	Host Adapter checks parity on the selected drive
 1	selected drive has been installed
 0	Seagate installation software present
--------d-135504-----------------------------
INT 13 U - Seagate - ??? - RETURN IDENTIFICATION
	AX = 5504h
	DX = drive (bit 7 set for hard disk)
Return: CF clear if successful
	    AX = 4321h if ST01/ST02h
	    AX = 4322h if ??? Seagate controller
	CF set on error
SeeAlso: AX=5505h,AX=5514h
--------d-135504-----------------------------
INT 13 - Seagate ST01/ST02 - RETURN IDENTIFICATION
	AX = 5504h
	DL = drive ID (80h, 81h, ...)
Return: AX = 4321h
	BL = selected drive number (00h, 01h)
	BH = number of drives attached to Host Adapter (max. 2)
--------d-135505-----------------------------
INT 13 - Seagate - ??? - PARK HEADS
	AX = 5505h
	DX = drive (bit 7 set for hard disk)
Return: CF clear if successful
	CF set on error
SeeAlso: AX=5504h,AX=5515h
--------d-135505-----------------------------
INT 13 - Seagate ST01/ST02 - PARK HEADS
	AX = 5505h
	DL = drive ID (80h, 81h, ...)
	DH = subfunction
	    00h park heads (SCSI Stop command)
	    01h un-park heads (SCSI Start command)
Return: nothing
--------d-135506-----------------------------
INT 13 - Seagate ST01/ST02 - SCSI Bus Parity
	AX = 5506h
	DL = drive ID (80h, 81h, ...)
	DH = subfunction
	    00h disable parity check
	    01h enable parity check
	    02h return current parity setting
Return: AL = status
	    00h parity checking disabled
	    01h parity checking enabled
--------d-135507-----------------------------
INT 13 - Seagate ST01/ST02 - RESERVED FUNCTIONS
	AX = 5507h to 550Dh
Note:	officially listed as "reserved"
--------d-135514-----------------------------
INT 13 U - Seagate - ???
	AX = 5514h
	DX = drive (bit 7 set for hard disk)
Return: CF clear if successful
	CF set on error
	AX = return value (FEBEh,FEBFh,FEDAh,FEDBh)
SeeAlso: AX=5504h,AX=5515h
--------d-135515-----------------------------
INT 13 U - Seagate - PARK HEADS???
	AX = 5515h
	DX = drive (bit 7 set for hard disk)
Return: CF clear if successful
	CF set on error
Note:	appears to be identical to AX=5505h
SeeAlso: AX=5504h,AX=5505h
--------d-1359-------------------------------
INT 13 - SyQuest - Generic SCSI pass through
	AH = 59h
	CX = HOST_ID, 0-based
	DX = 80h
	ES:BX pointer to SCSI structure (see #00286)
Return: CF clear
	AH = 95h
SeeAlso: AH=12h"SyQuest",AH=13h"SyQuest",AH=1Fh"SyQuest"

Format of SyQuest SCSI structure:
Offset	Size	Description	(Table 00286)
 00h	WORD	opcode (see #00287)
 02h	BYTE	target's SCSI ID
 03h	BYTE	target's logical unit number
 04h	BYTE	data direction (00h no data xfer, 01h data in, FFh data out)
 05h	BYTE	host status
		00h successful
		01h selection time out
		02h data over-run or under-run
 06h	BYTE	target status at command completion
		00h successful
		02h check status
		08h busy
 07h	BYTE	command data block length
 08h	DWORD	request data length
 0Ch	DWORD	result data length (actual length of data transferred)
 10h	DWORD	-> CDB (see #03236,#03237,#03238)
 14h	DWORD	-> data buffer
Note:	The handler does not perform a 'Request Sense' command if there was an
	  error

(Table 00287)
Values for SCSI opcode:
 00h	verify interface
	clears carry flag and returns if function is available
 01h	returns the ID of the INT 13h Handler in a NULL terminated string of
	length less than 40 byte including the terminator.
	The string is stored in the buffer pointed by p_buf.
 02h	device mapping info. The caller provides a one byte buffer.
	The handler stores the Int 13h Device ID (80h or above) in the buffer.
	It stores 0 if that target does not exists.
 03h	execute SCSI command
 04h	device reset
 05h	SCSI bus reset
SeeAlso: #00286
--------d-1370-------------------------------
INT 13 - Priam EDVR.SYS DISK PARTITIONING SOFTWARE???
	AH = 70h
	???
Return: ???
Note:	Priam's EDISK.EXE (FDISK replacement) and EFMT.EXE (low-level
	  formatting program) make this call, presumably to EDVR.SYS (the
	  partitioning driver)
SeeAlso: AH=ADh
----------1375-------------------------------
INT 13 - ???
	AH = 75h
	???
Return: AH = ???
	???
Note:	intercepted by PC-Cache (v5.1 only)
----------1376-------------------------------
INT 13 - ???
	AH = 76h
	???
Return: AH = ???
	???
Note:	intercepted by PC-Cache (v5.1 only)
--------c-137B00-----------------------------
INT 13 - NOW! v3.05 - GET INFORMATION
	AX = 7B00h
	CX:DX -> 1F8h-byte buffer for information record (see #00288)
Return: AX = 0000h
	BX = segment of main resident code
	ES = ???
Program: NOW! is a disk cache by Vertisoft Systems, Inc.
SeeAlso: AX=7B02h,AH=EFh

Format of NOW! information record:
Offset	Size	Description	(Table 00288)
 00h 80 BYTEs	name of directory from which NOW! was started
 50h 424 BYTEs	???
 81h  ? BYTEs	array of bytes for ???
 F7h 250 BYTEs	array of 25 entries, one per drive???
	Offset	Size	Description
	 00h  2 BYTEs	???
	 02h	WORD	???
	 04h	WORD	???
	 06h  4 BYTEs	???
1F1h  7 BYTEs	???
--------c-137B01-----------------------------
INT 13 - NOW! v3.05 - ???
	AX = 7B01h
Return: DX = segment of ???
SeeAlso: AX=7B00h
--------c-137B02-----------------------------
INT 13 - NOW! v3.05 - SET INFORMATION
	AX = 7B02h
	BX = segment of ??? (10h above a PSP)
	CX:DX -> 1F8h-byte information record (see #00288)
Return: ???
Program: NOW! is a disk cache by Vertisoft Systems, Inc.
Note:	NOW! grabs the INT 24h value from the PSP reached via the segment in
	  BX
SeeAlso: AX=7B00h
--------c-137B03-----------------------------
INT 13 - NOW! v3.05 - ???
	AX = 7B03h
	???
Return: ???
SeeAlso: AX=7B00h,AX=7B04h
--------c-137B04-----------------------------
INT 13 - NOW! v3.05 - ???
	AX = 7B04h
	???
Return: ???
SeeAlso: AX=7B03h
--------c-137B05-----------------------------
INT 13 - NOW! v3.05 - GET DISK ACCESSES???
	AX = 7B05h
Return: BX:AX = number of physical accesses???
	DX:CX = total disk accesses???
SeeAlso: AX=7B00h,AX=7B06h
--------c-137B06-----------------------------
INT 13 - NOW! v3.05 - GET ???
	AX = 7B06h
	BX = ???
Return: AX = 0000h
	BX = ???
SeeAlso: AX=7B05h,AX=7B07h
--------c-137B07-----------------------------
INT 13 - NOW! v3.05 - GET ???
	AX = 7B07h
Return: AX = ???
	BX = ???
	CX = ???
	DX = ???
SeeAlso: AX=7B06h
--------c-137B08-----------------------------
INT 13 - NOW! v3.05 - ???
	AX = 7B08h
	CX = ??? (default 00h)
Return: ???
SeeAlso: AX=7B00h
--------c-1380--CX6572-----------------------
INT 13 - FAST! v4.02+ - API
	AH = 80h
	CX = 6572h
	DX = 1970h
	ES:BX -> request packet (see #00290)
	AL = function number (see #00289)
Return: AH = status (except function 06h)
	    00h if successful
	    01h invalid function
	    05h not supported by the installed variant
	CF clear if successful
	CF set on error
	AL may be destroyed
Program: FAST! is a disk cache by Future Computing Systems and marketed by
	  BLOC Publishing Corp.
SeeAlso: AX=8001h,AX=8006h,AX=8007h
Index:	hotkeys;FAST!

(Table 00289)
Values for FAST! function:
 01h	get cache information (see AX=8001h)
 04h	disable cache
 05h	enable cache and reset statistics
 06h	installation check (see AX=8006h)
 07h	unhook interrupts (see AX=8007h)
 09h	flush cache
 0Ah	(v4.02+) enable staged writes
 0Bh	(v4.02+) disable staged writes
 0Ch	(v4.02+) enable beep on flush
 0Dh	(v4.02+) disable beep on flush
 0Eh	???
 0Fh	???
 10h	(v4.12+) enable hotkeys
 11h	(v4.12+) disable hotkeys
 12h	(v4.13+) set idle delay
 13h	(v4.13+) set flush dirty percentage
 14h	(v5.00+) enable mouse checks
 15h	(v5.00+) disable mouse checks
 16h	(v5.00d+) reduce cache size to minimum
 17h	(v5.00d+) increase cache size to maximum

Format of FAST! request packet:
Offset	Size	Description	(Table 00290)
 00h	DWORD	pointer to 19-byte signature string (see #00291)
 04h	DWORD	pointer to buffer for data (if needed by function)

(Table 00291)
Values for FAST! v4.04-v5.03 signature string:
 13h 07h 06h 08h 11h 18h 0Fh 0Eh 02h 18h 13h 08h 0Bh 08h 01h 00h 04h 08h 15h
--------c-138001CX6572-----------------------
INT 13 - FAST! v4.02+ - GET CACHE INFORMATION
	AX = 8001h
	CX = 6572h
	DX = 1970h
	ES:BX -> request packet (see #00292)
Return: AH = 00h if successful
SeeAlso: AH=80h,AX=8006h

Format of FAST! request packet:
Offset	Size	Description	(Table 00292)
 00h	DWORD	-> 19-byte signature string (see #00291)
 04h	DWORD	-> buffer for cache information (see #00293)

Format of FAST! cache information (v5.00-5.03):
Offset	Size	Description	(Table 00293)
 00h	WORD	binary version number of FAST! (v5.00 = 01F4h)
 02h	BYTE	revision letter (61h = X.XXa, 62h = X.XXb, etc.)
 03h	BYTE	FAST! variant
		(01h = FASTE, 02h = FASTX BIOS, 04h = FASTC, 20h = FASTX XMS)
 04h	DWORD	total number of read requests
 08h	DWORD	number of physical disk reads
 0Ch	DWORD	grabbed hash buckets
 10h	DWORD	"st_386mem"
 14h	DWORD	total number of writes (only counted when staging enabled)
 18h	DWORD	number of physical disk writes (only when staging enabled)
 1Ch	DWORD	number of write errors while flushing cache
 20h	WORD	flags1 (see #00294)
 22h	WORD	flags
		bit 0: ???
		bit 1: staged writes enabled
 24h	WORD	???
 26h	WORD	maximum cache size in KB
 28h	WORD	minimum cache size in KB
 2Ah	WORD	segment of first cache buffer (FASTC)
		segment of EMS page frame (FASTE)
		XMS handle (FASTX XMS)
 2Ch	WORD	number of hash buckets containing no entries
 2Eh	WORD	number of hash buckets containing one entry
 30h	WORD	number of hash buckets containing two entries
 32h	WORD	number of hash buckets containing three entries
 34h	WORD	number of hash buckets containing four entries
 36h	WORD	number of hash buckets containing five entries
 38h	WORD	maximum contiguous sectors
 3Ah	WORD	hash factor
 3Ch	WORD	number of paragraphs of memory used below 1M
 3Eh	WORD	entries per hash bucket
 40h	WORD	idle delay in seconds
 42h  2 BYTEs	???
 44h	WORD	staged write threshold percentage
 46h  2 BYTEs	???
 48h	WORD	number of dirty sectors
 4Ah	WORD	number of staged write buffers
 4Ch	WORD	current cache size in KB
 4Eh	WORD	beep frequency in Hz
 50h	WORD	???
 52h	WORD	???

Bitfields for FAST! flags1:
Bit(s)	Description	(Table 00294)
 0	beep on flush
 3	hotkeys enabled
 4	mouse idle check enabled
 8	caching enabled
 13	???
--------c-138006CX6572-----------------------
INT 13 - FAST! v4.02+ - INSTALLATION CHECK
	AX = 8006h
	CX = 6572h
	DX = 1970h
	ES:BX -> request packet (see #00295)
Return: AX = 1965h if installed
SeeAlso: AH=80h,AX=8001h,AX=8007h

Format of FAST! request packet:
Offset	Size	Description	(Table 00295)
 00h	DWORD	-> 19-byte signature string (see #00291)
--------c-138007CX6572-----------------------
INT 13 - FAST! v4.02+ - UNHOOK INTERRUPTS
	AX = 8007h
	CX = 6572h
	DX = 1970h
	ES:BX -> request packet (see #00296)
Return: AX = 1965h if installed
SeeAlso: AH=80h,AX=8006h
Index:	uninstall;FAST!

Format of FAST! request packet:
Offset	Size	Description	(Table 00296)
 00h	DWORD	-> 19-byte signature string (see #00291)
--------c-1381--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
	AH = 81h
	SI = 4358h
	???
Return: ???
Note:	PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
	  Super PC-Kwik, and thus support this call (PC-Cache v5.1 corresponds
	  to PC-Kwik v3.20 and PC-Cache v5.5 to PC-Kwik v3.27)
	returns immediately in PC-Cache v5.x
Index:	PC-Cache|Qualitas Qcache
--------c-1382--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
	AH = 82h
	SI = 4358h
	???
Return: AL = ???
Note:	PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
	  Super PC-Kwik, and thus support this call
SeeAlso: AH=84h
Index:	PC-Cache|Qualitas Qcache
--------c-1383--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
	AH = 83h
	SI = 4358h
	AL = ???
	ES:BX -> ???
	???
Return: ???
Note:	PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
	  Super PC-Kwik, and thus support this call
SeeAlso: AH=85h
Index:	PC-Cache|Qualitas Qcache
--------c-1384--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
	AH = 84h
	SI = 4358h
	AL = ???
	???
Return: AL = ???
Note:	PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
	  Super PC-Kwik, and thus support this call
SeeAlso: AH=82h
Index:	PC-Cache|Qualitas Qcache
--------c-1385--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
	AH = 85h
	SI = 4358h
	AL = ???
	DL = ???
	???
Return: ???
Note:	PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
	  Super PC-Kwik, and thus support this call (PC-Cache v5.1 corresponds
	  to PC-Kwik v3.20)
SeeAlso: AH=83h
Index:	PC-Cache|Qualitas Qcache
--------c-1386--SI4358-----------------------
INT 13 - Super PC-Kwik v4.00+ - ???
	AH = 86h
	SI = 4358h
	???
Return: ???
Note:	Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and
	  thus supports this call
Index:	Qualitas Qcache
--------c-1387--SI4358-----------------------
INT 13 - Super PC-Kwik v4.00+ - ???
	AH = 87h
	SI = 4358h
	???
Return: AH = status??? (00h)
	CX = ???
	DX = ??? (0000h)
Note:	Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and
	  thus supports this call
Index:	Qualitas Qcache
--------c-1388--SI4358-----------------------
INT 13 - Super PC-Kwik v4.00+ - ???
	AH = 88h
	SI = 4358h
	???
Return: AH = status??? (00h)
	CX = ???
	DX = ??? (0000h)
Note:	Qualitas Qcache v4.00 is an OEM version of Super PC-Kwik v4.00, and
	  thus supports this call
Index:	Qualitas Qcache
--------c-1389--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 89h
	SI = 4358h
	???
Return: ???
--------c-138A--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 8Ah
	SI = 4358h
	???
Return: ???
--------c-138EED-----------------------------
INT 13 - HyperDisk v4.01+ - ???
	AX = 8EEDh
	???
Return: ???
Program: HyperDisk is a shareware disk cache by HyperWare (Roger Cross)
SeeAlso: AX=8EEEh,AX=8EEFh,AH=EEh,INT 2F/AX=DF00h
--------c-138EEE-----------------------------
INT 13 - HyperDisk v4.01+ - ???
	AX = 8EEEh
Return: CF set
	AX = CS of HyperDisk resident code
	???
Note:	identical to AX=8EEFh in HYPERDKX v4.21-4.30
SeeAlso: AX=8EEDh,AX=8EEFh,AH=EEh
--------c-138EEF-----------------------------
INT 13 - HyperDisk v4.01+ - ???
	AX = 8EEFh
Return: CF set
	AX = CS of HyperDisk resident code
	???
Note:	identical to AX=8EEEh in HYPERDKX v4.21-4.30
SeeAlso: AX=8EEDh,AX=8EEEh,AH=EEh
--------c-1392--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 92h
	SI = 4358h
	???
Return: AH = status??? (00h)
	DL = ???
SeeAlso: AH=93h
--------c-1393--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 93h
	SI = 4358h
	???
Return: AH = status??? (00h)
	AL = ???
SeeAlso: AH=92h
--------c-1394--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 94h
	SI = 4358h
	???
Return: ???
--------c-1395--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 95h
	SI = 4358h
	???
Return: AH = status??? (00h)
	DX = ???
--------c-1396--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 96h
	SI = 4358h
	AL = ??? (01h)
	BX = ??? (0790h)
	DL = ???
Return: AH = status??? (00h)
	DX = ???
--------c-1397--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 97h
	SI = 4358h
	???
Return: ???
--------c-1398--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 98h
	SI = 4358h
	???
Return: ???
--------c-1399--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 99h
	SI = 4358h
	???
Return: ???
--------c-139A--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 9Ah
	SI = 4358h
	???
Return: ???
--------c-139B--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 9Bh
	SI = 4358h
	???
Return: ???
--------c-139C--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 9Ch
	SI = 4358h
	???
Return: ???
Note:	functions 9Ch and 9Dh are the only ones which are fully reentrant; all
	  other PC-Kwik API calls (INT 13/81h-B0h) return AX=0200h and CF clear
	  if a previous call is still in progress
--------c-139D--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = 9Dh
	SI = 4358h
	???
Return: ???
--------c-13A0--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - GET RESIDENT CODE SEGMENT
	AH = A0h
	SI = 4358h
Return: AX = segment of resident code
Note:	PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
	  Super PC-Kwik, and thus support this call (note that PC-Cache v5.5
	  corresponds to PC-Kwik v3.27)
SeeAlso: INT 16/AX=FFA5h/CX=1111h
Index:	PC-Cache|Qualitas Qcache
--------c-13A1--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - FLUSH CACHE
	AH = A1h
	SI = 4358h
Return: CF clear
	AH = 00h (v5.10)
Notes:	PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
	  Super PC-Kwik, and thus support this call (note that PC-Cache v5.1
	  corresponds to PC-Kwik v3.20)
	this function is one out of several cache flush calls issued by the
	  PTS-DOS 6.51 and S/DOS 1.0 kernel before rebooting.
SeeAlso: INT 16/AX=FFA5h/CX=FFFFh
Index:	PC-Cache|Qualitas Qcache
--------c-13A2--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
	AH = A2h
	SI = 4358h
	???
Return: ???
Note:	PC Tools PC-Cache 5.x and Qualitas Qcache 4.00 are OEM versions of
	  Super PC-Kwik, and thus support this call (note that PC-Cache v5.1
	  corresponds to PC-Kwik v3.20)
Index:	PC-Cache|Qualitas Qcache
--------c-13A3--SI4358-----------------------
INT 13 U - Super PC-Kwik v5.10+ - DISABLE CACHE
	AH = A3h
	SI = 4358h
Return: CF clear
SeeAlso: AH=A4h
--------c-13A4--SI4358-----------------------
INT 13 U - Super PC-Kwik v5.10+ - ENABLE CACHE
	AH = A4h
	SI = 4358h
Return: CF clear
SeeAlso: AH=A3h
--------c-13A5--SI4358-----------------------
INT 13 CU - Super PC-Kwik v5.10+ - PROGRAM TERMINATION NOTIFICATION
	AH = A5h
	SI = 4358h
Return: AX = ???
	SI = ???
Notes:	called and used internally by Super PC-Kwik when a program terminates
	  via INT 21/AH=00h, INT 21/AH=31h, or INT 21/AH=4Ch
	this call is not supported by Qualitas Qcache 4.00
Index:	PC-Cache
SeeAlso: AH=A6h,AH=A9h,INT 21/AH=00h,INT 21/AH=31h,INT 21/AH=4Ch
--------c-13A6--SI4358-----------------------
INT 13 CU - Super PC-Kwik v5.10+ - PROGRAM LOAD NOTIFICATION
	AH = A6h
	SI = 4358h
	DS:DX -> ASCIZ program name
	ES:BX -> EXEC data block (see #01590 at INT 21/AH=4Bh)
Return: ???
Note:	called and used internally by Super PC-Kwik when a program is loaded
	  with INT 21/AX=4B00h
SeeAlso: AH=A5h,AH=A9h,INT 21/AH=4Bh
--------c-13A7--SI4358-----------------------
INT 13 CU - Super PC-Kwik 5.1 - ???
	AH = A7h
	SI = 4358h
Return: ???
Note:	called and used internally by Super PC-Kwik on some INT 21 calls
SeeAlso: AH=A5h,AH=A6h,AH=A8h
--------v-13A759-----------------------------
INT 13 U - Novell DOS 7 - SDRes v27.03 - ???
	AX = A759h
Return: AX = 59A7h if installed
	    DX:BX -> ??? data
Program: SDRes is the resident portion of the Search&Destroy antiviral by
	  Fifth Generation Systems, as bundled with Novell DOS 7
SeeAlso: INT 21/AH=0Eh/DL=ADh
--------c-13A8--SI4358-----------------------
INT 13 CU - Super PC-Kwik 5.1 - ???
	AH = A8h
	SI = 4358h
Return: ???
Note:	called and used internally by Super PC-Kwik on some INT 21 calls
SeeAlso: AH=A5h,AH=A6h,AH=A7h
--------c-13A9--SI4358-----------------------
INT 13 CU - Super PC-Kwik 5.1 - EXITCODE RETRIEVAL NOTIFICATION
	AH = A9h
	SI = 4358h
Return: ???
Note:	called and used internally by Super PC-Kwik when an application issues
	  INT 21/AH=4Dh
SeeAlso: AH=A5h,AH=A6h,INT 21/AH=4Dh
--------c-13AA--SI4358-----------------------
INT 13 - Super PC-Kwik v4+ - ???
	AH = AAh
	SI = 4358h
	???
Return: ???
Note:	Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
	  this call
--------c-13AB--SI4358-----------------------
INT 13 - Super PC-Kwik v4+ - ???
	AH = ABh
	SI = 4358h
	???
Return: ???
Note:	Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
	  this call
--------c-13AC--SI4358-----------------------
INT 13 - Super PC-Kwik v4+ - ???
	AH = ACh
	SI = 4358h
	???
Return: ???
Note:	Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
	  this call
--------d-13AD-------------------------------
INT 13 - Priam HARD DISK CONTROLLER???
	AH = ADh
	???
Return: ???
Note:	this call is made from Priam's EFMT.EXE (low-level formatter), probably
	  to check the ROM type on the controller for their hard disk kits
SeeAlso: AH=70h
--------c-13AD--SI4358-----------------------
INT 13 - Super PC-Kwik v4+ - ???
	AH = ADh
	SI = 4358h
	???
Return: ???
Note:	Qualitas Qcache is an OEM version of Super PC-Kwik, and thus supports
	  this call
--------c-13AE--SI4358-----------------------
INT 13 - Super PC-Kwik v5.10+ - ???
	AH = AEh
	SI = 4358h
	???
Return: ???
--------c-13B0--SI4358-----------------------
INT 13 - Super PC-Kwik v3.20+ - ???
	AH = B0h
	SI = 4358h
	???
Return: ???
Note:	PC Tools PC-Cache 5.x is an OEM version of Super PC-Kwik, and thus
	  supports this call; Qualitas Qcache does not support it
Index:	PC-Cache
----------13BF00-----------------------------
INT 13 - Mylex/Adaptec??? - ???
	AX = BF00h
	BX = PCI address???
	DI = 0000h ???
	DL = drive number (80h = C:)
Return: ???
Note:	some poorly-commented code using this function notes that there had
	  been a workaround for some Mylex BIOS bug by setting DL to 8Fh
--------d-13E000-----------------------------
INT 13 - XBIOS - COMMAND
	AX = E000h
	CX = 0
	DL = drive number (80h,81h,82h,83h)
	ES:BX = pointer to XBIOS Command Block (see #00297)
Return: CF clear if successful
	    CX = 1234h XBIOS Signature
	CF set on error
Program: XBIOS is a driver in some versions of Disk Manager that is
	  loaded from the disk MBR, replacing the ROM BIOS disk support
	  e.g. adding LBA mode support, and read/write multiple.
SeeAlso: AH=F9h"SWBIOS"

Format of XBIOS Command Block:
Offset	Size	Description	(Table 00297)
 00h	BYTE	function
		0Eh Get XBIOS Configuration Information
		    Return: buffer points to Ontrackr_Ref_Data structure
			(see #00298)
 01h	BYTE	reserved (must be zero before function call)
 02h	DWORD	buffer pointer - Input or output depending on opcode
SeeAlso: #00298,#00299

Format of Ontrackr_Ref_Data structure:
Offset	Size	Description	(Table 00298)
 00h	WORD	Size of structure (33h)
 02h	BYTE	VxD Chain mode
 03h 12 BYTEs	Drive 1: Ontrackr_VxD_Data structure (see #00299)
 0Fh 12 BYTEs	Drive 2: Ontrackr_VxD_Data structure
 1Bh 12 BYTEs	Drive 3: Ontrackr_VxD_Data structure
 27h 12 BYTEs	Drive 4: Ontrackr_VxD_Data structure (see #00299)
SeeAlso: #00297,#00299

Format of Ontrackr_VxD_Data structure:
Offset	Size	Description	(Table 00299)
 00h	BYTE	INT 13h drive number
 01h	DWORD	Delta skew value
 05h	BYTE	Physical  heads (Word 3 of Identify Data)
 06h	BYTE	Physical sectors per track (Word 6 of Identify Data)
 07h	BYTE	Multiple Block Size (Blocking factor)
 08h	BYTE	Read/Write Multiple disable flags
		00001000b	drive supports r/w multiple
		00000100b	do not use read multiple
		00000010b	do not use write multiple
 09h	WORD	Base port address (1F0/170)
 0Bh	BYTE	Hardware interrupt channel (14/15)
SeeAlso: #00298
--------v-13EC00-----------------------------
INT 13 - VIRUS - "Tiso" - INSTALLATION CHECK
	AX = EC00h
Return: CF clear if installed
SeeAlso: AH=F2h,INT 12/AX=4350h/BX=4920h
--------d-13EE-------------------------------
INT 13 - SWBIOS - SET 1024-CYLINDER FLAG
	AH = EEh
	DL = drive number (80h, 81h)
Return: CF clear
	   AH = 00h
Program: SWBIOS is a TSR by Ontrack Computer Systems
Desc:	the following INT 13 call will add 1024 to the specified cylinder
	  number to get the actual cylinder number desired
Notes:	the flag is cleared by all INT 13 calls except AH=EEh and AH=EFh
	Disk Manager also supports these calls
	this function is also supported by HyperDisk v4.01+ and PC-Cache v5.5+,
	  in order to allow caching of drives using SWBIOS to access more than
	  1024 cylinders
	for software which supports that call, this function is equivalent to
	  calling AH=EFh with CX=0400h
SeeAlso: AH=F9h,AH=FEh,INT 16/AX=FFA5h/CX=1111h,INT 2F/AX=DF00h
Index:	PC-Cache;huge disks|Disk Manager
--------c-13EF-------------------------------
INT 13 - Ontrack Drive Rocket - SET CYLINDER OFFSET
	AH = EFh
	CX = cylinder offset for next INT 13 call
	DL = drive number (80h, 81h)
Return: CF clear
	    AH = 00h
Program: Drive Rocket is a drive accelerator by Ontrack Computer Systems for
	  IDE drives supporting the read multiple and write multiple commands
Desc:	the following INT 13 call will add the number given by this call to
	  the specified cylinder to get the actual cylinder number, then reset
	  the offset to zero
Note:	this function is also supported by the NOW! disk cache, and presumably
	  newer versions of SWBIOS and Disk Manager
	for software which supports this call, AH=EEh is equivalent to calling
	  this function with CX=0400h
	the cylinder offset is reset to 0 by all INT 13 called except AH=EEh
	  and AH=EFh
SeeAlso: AX=7B00h
--------v-13F2-------------------------------
INT 13 - VIRUS - "Neuroquila" - INSTALLATION CHECK
	AH = F2h
Return: CF ??? if installed
SeeAlso: AX=EC00h,INT 12/AX=4350h/BX=4920h,INT 21/AX=0B56h
--------d-13F9-------------------------------
INT 13 - SWBIOS - INSTALLATION CHECK
	AH = F9h
	DL = drive number (80h,81h)
Return: CF clear
	    DX = configuration word
		bit 15 set if other SWBIOS extensions available
	CF set on error
Program: SWBIOS is a TSR by Ontrack Computer Systems
	XBIOS is a driver in some versions of Disk Manager that is
	  loaded from the disk MBR, replacing the ROM BIOS disk support
	  eg adding LBA mode support, and read/write multiple.
Note:	Disk Manager also supports these calls
SeeAlso: AH=EEh,AX=E000h"XBIOS",AH=FFh"EZ-Drive"
Index:	Disk Manager
--------v-13FA--DX5945-----------------------
INT 13 - PC Tools v8+ VSAFE, VWATCH - API
	AH = FAh
	DX = 5945h
	AL = function (00h-07h)
Return: varies by function
	if not installed:
	    CF set
		AH = 01h
Note:	this API is identical to the ones on INT 16/AH=FAh and INT 21/AH=FAh,
	  so it is listed in its entirety under INT 16/AX=FA00h and following
SeeAlso: INT 16/AX=FA00h
--------v-13FD50------------------------
INT 13 - VIRUS - "Predator" - INSTALLATION CHECK
	AX = FD50h
Return: AX = 50FDh if resident
SeeAlso: AX=5001h"VIRUS",INT 16/AH=DDh"VIRUS"
--------d-13FE-------------------------------
INT 13 - SWBIOS - GET EXTENDED CYLINDER COUNT
	AH = FEh
	DL = drive number (80h, 81h)
Return: CF clear
	DX = number of cylinders beyond 1024 on drive
Program: SWBIOS is a TSR by Ontrack Computer Systems
Notes:	standard INT 13/AH=08h will return a cylinder count truncated to 1024
	BIOS without this extension would return count modulo 1024
	Disk Manager also supports these calls
SeeAlso: AH=EEh
----------13FF-------------------------------
INT 13 - EZ-Drive - INSTALLATION CHECK
	AH = FFh
	DL = drive number (80h)
Return: CF clear
	    AX = AA55h
	    ES:BX -> string "AERMH13Vxx", where xx is the version number of
		  the EZ-Drive driver
	CF set on error
Program: EZ-Drive is a driver by Micro House that is loaded from the
	  hard disk MBR, replacing the ROM BIOS disk support, eg adding
	  LBA mode support, and read/write multiple.
Note:	this function is called by the Windows95 Master Boot Record
SeeAlso: AX=E000h"XBIOS",AH=F9h"SWBIOS"
--------B-13FF-------------------------------
INT 13 - IBM SurePath BIOS - Officially "Private" Function
	AH = FFh
--------U-13FFFFBHAA-------------------------
INT 13 - UNIQUE UX Turbo Utility - SET TURBO MODE
	AX = FFFFh
	BH = AAh
	BL = subfunction
	    00h installation check
		Return: AX = 1234h if installed
	    01h turn on Turbo mode
	    02h turn off Turbo mode
	    03h set Turbo mode according to hardware switch
	    04h set disk access to Turbo mode
	    05h set disk access to Normal mode
Return: nothing
SeeAlso: INT 15/AH=DFh
Index:	installation check;UNIQUE UX Turbo Utility
--------S-14---------------------------------
INT 14 - SERIAL - Digiboard DigiCHANNEL PC/X* Extender INT 14 (XAPCM232.SYS)
InstallCheck:	determine whether the "~DOSXAM~" character device exists
Index:	installation check;Digiboard DigiCHANNEL
--------S-1400-------------------------------
INT 14 - SERIAL - INITIALIZE PORT
	AH = 00h
	AL = port parameters (see #00300)
	DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH = line status (see #00304)
	    FFh if error on Digiboard XAPCM232.SYS
	AL = modem status (see #00305)
Notes:	default handler is at F000h:E739h in IBM PC and 100% compatible BIOSes
	since the PCjr supports a maximum of 4800 bps, attempting to set 9600
	  bps will result in 4800 bps
	various network and serial-port drivers support the standard BIOS
	  functions with interrupt-driven I/O instead of the BIOS's polled I/O
	the 1993/04/08 Compaq system ROM uses only the low two bits of DX
	the default setting used by DOS (MS-DOS 6, DR-DOS 7.03, PTS-DOS) when
	  (re-)initializing the serial devices is AL=A3h (2400 bps, no parity,
	  1 stop bit, 8 data bits).
SeeAlso: AH=04h"SERIAL",AH=04h"MultiDOS",AH=05h"SERIAL",AH=57h
SeeAlso: AX=8000h"ARTICOM",AH=81h"COMM-DRV",AH=82h"COURIERS",AH=8Ch
SeeAlso: MEM 0040h:0000h,PORT 03F8h"Serial"

Bitfields for serial port parameters:
Bit(s)	Description	(Table 00300)
 7-5	data rate (110,150,300,600,1200,2400,4800,9600 bps)
 4-3	parity (00 or 10 = none, 01 = odd, 11 = even)
 2	stop bits (set = 2, clear = 1)
 1-0	data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
SeeAlso: #00302,#00307,#00308,#00309
--------S-1400-------------------------------
INT 14 - FOSSIL (Fido/Opus/Seadog Standard Interface Level) - INITIALIZE
	AH = 00h
	AL = initializing parameters
	    7 - 6 - 5	   4 - 3     2	  1 - 0
	    -BAUD RATE-	   PARITY   STOP   WORD
				    BITS  LENGTH
	    000 19200 bd   00 none  0: 1  00: 5
	    001 38400 bd   01 odd   1: 2  01: 6
	    010	  300 bd   11 even	  10: 7
	    011	  600 bd		  11: 8
	    100	 1200 bd
	    101	 2400 bd
	    110	 4800 bd
	    111	 9600 bd (4800 on PCjr)
	DX = port number (0-3 or FFh if only performing non-I/O setup)
Return: AH = RS-232 status code bits (see #00301)
	AL = modem status bits
	    bit 3: always 1
	    bit 7: DCD - carrier detect
SeeAlso: #00300,AH=05h"FOSSIL",AH=81h"COMM-DRV",AH=82h"COURIERS"

Bitfields for FOSSIL RS-232 status:
Bit(s)	Description	(Table 00301)
 0	RDA - input data is available in buffer
 1	OVRN - data has been lost
 5	THRE - room is available in output buffer
 6	TSRE - output buffer empty
--------S-1400-------------------------------
INT 14 - Tandy 2000 - SERIAL - RESET COMM PORT
	AH = 00h
	AL = RS-232C parameters (see #00302)
	DL = port number
	DH = protocol
	    bit 0: use XON/XOFF on received data
	    bit 1: use XON/XOFF when transmitting
Return: AH = line status (see #00304)
	AL = modem status (see #00305)
Note:	this interrupt is identical to INT 53 on the Tandy 2000
SeeAlso: AH=04h"Tandy 2000",INT 53"Tandy 2000"
--------S-1400-------------------------------
INT 14 - MBBIOS - INITIALIZE PORT
	AH = 00h
	AL = port parameters (see #00302)
	DX = port number
Return: AH = line status (see #00304)
	AL = modem status (see #00305)
Note:	MBBIOS was written by H. Roy Engehausen
SeeAlso: AH=04h"MBBIOS",AH=05h"MBBIOS",AH=09h"MBBIOS"

Bitfields for MBBIOS port parameters:
Bit(s)	Description	(Table 00302)
 7-5	data rate
	(normally 110,150,300,600,1200,2400,4800,9600 bps;
	9600,14400,19200,28800,38400,57600,115200,330400 bps
	if the high-speed option is set)
 4-3	parity (00 or 10 = none, 01 = odd, 11 = even)
 2	stop bits (set = 2, clear = 1)
 1-0	data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
SeeAlso: #00300
--------N-1400--DXFFFF-----------------------
INT 14 - Connection Manager - MODIFY DEFAULT CONNECTION PARAMETERS
	AH = 00h
	DX = FFFFh
	ES:DI -> vector string specifying new parameters
Return: AH = return code (00h,03h) (see #00303)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
Note:	if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
	  function, but redirects the port over the network; if DX is any other
	  value, the call is chained
SeeAlso: AH=04h/DX=FFFFh,AH=08h/DX=FFFFh,AH=0Ah/DX=FFFFh

(Table 00303)
Values for Connection Manager return code:
 00h	successful
 01h	no such connection
 02h	invalid connection ID
 03h	invalid subvector found
 04h	communication error (check BH)
 06h	insufficient resources, retry later
 FFh	no data available
--------S-1401-------------------------------
INT 14 - SERIAL - WRITE CHARACTER TO PORT
	AH = 01h
	AL = character to write
	DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH bit 7 clear if successful
	AH bit 7 set on error
	AH bits 6-0 = port status (see #00304)
Notes:	various network and serial-port drivers support the standard BIOS
	  functions with interrupt-driven I/O instead of the BIOS's polled I/O
	the 1993/04/08 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=02h,AH=0Bh"FOSSIL",AX=8000h"ARTICOM",AH=89h,MEM 0040h:007Ch
--------N-1401--DXFFFF-----------------------
INT 14 - Connection Manager - SEND CHARACTER
	AH = 01h
	DX = FFFFh
	BH = character to send
Return: AH = return code (00h-02h,06h) (see #00303)
Notes:	if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
	  function, but redirects the port over the network; if DX is any other
	  value, the call is chained
	this function is provided primarily for compatibility; AH=06h/DX=FFFFh
	  is the preferred function because it provides better performance
SeeAlso: AH=02h/DX=FFFFh,AH=06h/DX=FFFFh,AH=09h/DX=FFFFh
--------S-1402-------------------------------
INT 14 - SERIAL - READ CHARACTER FROM PORT
	AH = 02h
	AL = 00h (ArtiCom)
	DX = port number (00h-03h (04h-43h for Digiboard XAPCM232.SYS))
Return: AH = line status (see #00304)
	AL = received character if AH bit 7 clear
Notes:	will timeout if DSR is not asserted, even if function 03h returns
	  data ready
	various network and serial-port drivers support the standard BIOS
	  functions with interrupt-driven I/O instead of the BIOS's polled I/O
	the 1993/04/08 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=01h,AH=02h"FOSSIL",AH=84h,AH=FCh
--------S-1402-------------------------------
INT 14 - FOSSIL - RECEIVE CHARACTER WITH WAIT
	AH = 02h
	DX = port number (0-3)
Return: AL = character received
	AH = 00h
SeeAlso: AH=01h,AH=02h"SERIAL"
--------N-1402--DXFFFF-----------------------
INT 14 - Connection Manager - RECEIVE CHARACTER
	AH = 02h
	DX = FFFFh
	BH = character to send
Return: AH = return code (00h-02h,04h,FFh) (see #00303)
	BH = line status (see #00304)
	AL = received character (if any)
Notes:	if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
	  function, but redirects the port over the network; if DX is any other
	  value, the call is chained
	this function is provided primarily for compatibility; AH=07h/DX=FFFFh
	  is the preferred function because it provides better performance
SeeAlso: AH=02h/DX=FFFFh,AH=03h/DX=FFFFh,AH=06h/DX=FFFFh
--------S-1403-------------------------------
INT 14 - SERIAL - GET PORT STATUS
	AH = 03h
	AL = 00h (ArtiCom)
	DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH = line status (see #00304)
	AL = modem status (see #00305)
	AX = 9E00h if disconnected (ArtiCom)
Note:	the 1993/04/08 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=00h,AH=07h"MultiDOS",AX=8000h"ARTICOM",AH=81h"COURIERS",AX=FD02h

Bitfields for serial line status:
Bit(s)	Description	(Table 00304)
 7	timeout
 6	transmit shift register empty
 5	transmit holding register empty
 4	break detected
 3	framing error
 2	parity error
 1	overrun error
 0	receive data ready
Note:	for COMM-DRV, if bit 7 is set, an error occurred, and may be retrieved
	  through a separate call (see AX=8000h"COMM-DRV")

Bitfields for modem status:
Bit(s)	Description	(Table 00305)
 7	carrier detect
 6	ring indicator
 5	data set ready
 4	clear to send
 3	delta carrier detect
 2	trailing edge of ring indicator
 1	delta data set ready
 0	delta clear to send
--------N-1403--DXFFFF-----------------------
INT 14 - Connection Manager - RETURN COMMUNICATION PORT STATUS
	AH = 03h
	DX = FFFFh
	AL = connection ID
Return: AH = return code (00h-02h) (see #00303)
	BH = line status (see #00306)
	BL = modem status (see #00305) (only bits 4,5,7; all others zero)
Notes:	if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
	  function, but redirects the port over the network; if DX is any other
	  value, the call is chained
SeeAlso: AH=00h/DX=FFFFh,AH=04h/DX=FFFFh,AH=0Ah/DX=FFFFh

Bitfields for Connection Manager line status:
Bit(s)	Description	(Table 00306)
 7	CTS changed
 6	current CTS state
 5	timeout
 4	break
 3	framing error
 2	parity error
 1	overrun
 0	current carrier state (0 active, 1 no carrier)
--------S-1404-------------------------------
INT 14 - SERIAL - EXTENDED INITIALIZE (CONVERTIBLE,PS)
	AH = 04h
	AL = break status
	    00h if break
	    01h if no break
	BH = parity (see #00307)
	BL = number of stop bits
	    00h one stop bit
	    01h two stop bits (1.5 if 5 bit word length)
	CH = word length (see #00308)
	CL = bps rate (see #00309)
	DX = port number
Return: AX = port status code (see #00304,#00305)
SeeAlso: AH=00h,AH=1Eh,AX=8000h"ARTICOM"

(Table 00307)
Values for serial port parity:
 00h	no parity
 01h	odd parity
 02h	even parity
 03h	stick parity odd
 04h	stick parity even
SeeAlso: #00300,#00308,#00309,#00310

(Table 00308)
Values for serial port word length:
 00h	5 bits
 01h	6 bits
 02h	7 bits
 03h	8 bits
SeeAlso: #00300,#00307,#00309,#00345

(Table 00309)
Values for serial port bps rate:
 00h	110 (19200 if ComShare installed)
 01h	150 (38400 if ComShare installed)
 02h	300
 03h	600 (14400 if ComShare installed)
 04h	1200
 05h	2400
 06h	4800 (28800 if ComShare installed)
 07h	9600
 08h	19200
---ComShare---
 09h	38400
 0Ah	57600
 0Bh	115200
SeeAlso: #00300,#00307,#00309,#00346,#00353,AH=36h,#00364,#00606,#02923
--------S-1404-------------------------------
INT 14 - Tandy 2000 - SERIAL - FLUSH COMM BUFFER
	AH = 04h
	DL = port number
	DH = protocol
	    bit 0: use XON/XOFF on received data
	    bit 1: use XON/XOFF when transmitting
Return: nothing
Desc:	clears the serial interface buffer
Note:	this interrupt is identical to INT 53 on the Tandy 2000
SeeAlso: AH=00h"Tandy 2000",INT 53"Tandy 2000"
--------S-1404-------------------------------
INT 14 - FOSSIL - INITIALIZE DRIVER
	AH = 04h
	DX = port number
	optionally BX=4F50h
		   ES:CX -> byte to be set upon ^C
Return: AX = 1954h (if successful)
	BL = maximum function number supported (excluding 7Eh and above)
	BH = revision of FOSSIL specification supported
	DTR is raised
Note:	the word at offset 6 in the interrupt handler contains 1954h, and the
	  following byte contains the maximum function number supported; this
	  can serve as an installation check
SeeAlso: AH=05h"FOSSIL",AH=1Ch,INT 11/AH=BCh
Index:	installation check;FOSSIL
--------S-1404-------------------------------
INT 14 - MultiDOS Plus IODRV - INITIALIZE PORT
	AH = 04h
Return: port initialized; if Hayes-compatible modem, a connection has been
	  established
Note:	the port number is stored at offset BEh in the Task Control Block
	  (see #00456 at INT 15/AH=13h"MultiDOS")
SeeAlso: AH=00h,AH=05h"MultiDOS",AH=20h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1404-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CHANGE BAUD RATE
	AH = 04h
	AL = initializing parameters (see #00310)
	BX = baud rate
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    FFh error
SeeAlso: AH=05h"Digiboard"

Bitfields for Digiboard initializing parameters:
Bit(s)	Description	(Table 00310)
 7-5	unused
 4-3	parity (00 none, 01 odd, 11 even)
 2	stop bits (0 = one, 1 = two)
 1-0	data bits (00 = five, 01 = six, 10 = seven, 11 = eight)
SeeAlso: #00307,#00308
--------S-1404-------------------------------
INT 14 - MBBIOS - INSTALLATION CHECK
	AH = 04h
	DX = port number
Return: AX = AA55h if installed on specified port
SeeAlso: AH=00h"MBBIOS",AH=09h"MBBIOS"
--------N-1404--DXFFFF-----------------------
INT 14 - Connection Manager - OPEN COMMUNICATION
	AH = 04h
	DX = FFFFh
	ES:DI -> Connection Request protocol vector (see #00311)
Return: AH = return code
	    00h successful
		AL = connection ID
		BH = connection type
		    00h direct connection or no dialing
		    01h Connection Server dialed phone
	    01h no response from Connection Server
	    03h invalid request
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
Desc:	initiate a connection to the Connection Server listed in the current
	  Client parameter set
Notes:	if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
	  function, but redirects the port over the network; if DX is any other
	  value, the call is chained
	all subvectors of the Connection Request vector are optional; if
	  missing, default values are provided by the default connection
	  parameter set
SeeAlso: AH=00h/DX=FFFFh,AH=05h/DX=FFFFh,AH=06h/DX=FFFFh,AH=07h/DX=FFFFh
SeeAlso: AH=0Ah/DX=FFFFh,AH=0Ch/DX=FFFFh

Format of Connection Manager protocol command vector:
Offset	Size	Description	(Table 00311)
 00h	WORD	(big-endian) total length of command (including this word)
 02h	WORD	(big-endian) command code
		EF01h Connection Request
		EF06h Modify Connection Parameters
 04h  N BYTEs	list of subvectors (see #00313)
		allowable subvector types are 01h-04h,17h,18h for command code
		  EF01h; 03h,04h for command code EF06h (see #00312)

(Table 00312)
Values for Connection Manager subvector type code:
 01h	Connection ID
 02h	Destination ID
 03h	Asynchronous line parameters
 04h	Data transfer parameters
 09h	Line speed
 0Ah	Serial coding
 0Bh	Packet size
 0Ch	Timers
 0Dh	Special characters
 0Eh	Target ID
 0Fh	Telephone number
 10h	ASCII destination ID
 11h	Parity
 12h	Bits per character
 13h	Number of stop bits
 14h	Packet timer
 15h	Intercharacter timer
 17h	Flags
 18h	Parameter ranges
 19h	Flow control

Format of Connection Manager subvector:
Offset	Size	Description	(Table 00313)
 00h	BYTE	length of subvector
 01h	BYTE	type code (see #00312)
 02h N-2 BYTEs	data, which may include subvectors
SeeAlso: #00314,#00315,#00316,#00317,#00318,#00319,#00320,#00321,#00322,#00323,#00324
SeeAlso: #00325,#00326,#00328,#00329,#00330,#00331,#00332,#00333,#00311

Format of Connection ID subvector:
Offset	Size	Description	(Table 00314)
 00h	BYTE	03h (length)
 01h	BYTE	01h (subvector "Connection ID")
 02h	BYTE	connection ID
SeeAlso: #00313

Format of Destination ID subvector:
Offset	Size	Description	(Table 00315)
 00h	BYTE	length
 01h	BYTE	02h (subvector "Destination ID")
 02h  N BYTEs	subvector(s) of type 0Eh, 0Fh, or 10h
SeeAlso: #00313

Format of Asynchronous line parameters subvector:
Offset	Size	Description	(Table 00316)
 00h	BYTE	length
 01h	BYTE	03h (subvector "Asynchronous line parameters")
 02h  N BYTEs	subvector(s) of type 09h, 0Ah, or 19h
SeeAlso: #00313

Format of Data transfer parameters subvector:
Offset	Size	Description	(Table 00317)
 00h	BYTE	length
 01h	BYTE	04h (subvector "Data transfer parameters")
 02h  N BYTEs	subvector(s) of type 0Bh, 0Ch, or 0Dh
SeeAlso: #00313

Format of Line speed subvector:
Offset	Size	Description	(Table 00318)
 00h	BYTE	04h (length)
 01h	BYTE	09h (subvector "Line speed")
 02h	WORD	bit map, highest set bit selects speed
		bit 0: 2400
		bits 1-7: 1800, 1200, 600, 300, 115200, 150, 110 bps
		bits 8-15: 57600, 38400, 19200, 14400, 9600, 7200, 4800, 3600
SeeAlso: #00313

Format of Serial coding subvector:
Offset	Size	Description	(Table 00319)
 00h	BYTE	length
 01h	BYTE	0Ah (subvector "Serial coding")
 02h  N BYTEs	subvector(s) of type 11h, 12h, or 13h
SeeAlso: #00313

Format of Packet size subvector:
Offset	Size	Description	(Table 00320)
 00h	BYTE	04h (length)
 01h	BYTE	0Bh (subvector "Packet size")
 02h	WORD	(big-endian) packet size, 1 to 1024
SeeAlso: #00313

Format of Timers subvector:
Offset	Size	Description	(Table 00321)
 00h	BYTE	length
 01h	BYTE	0Ch (subvector "Timers")
 02h  8 BYTEs	subvector of type 14h or 15h
SeeAlso: #00313

Format of Special characters subvector:
Offset	Size	Description	(Table 00322)
 00h	BYTE	length
 01h	BYTE	0Dh (subvector "Special characters")
 02h  N BYTEs	list of ASCII characters to be used as EOM or EOB
SeeAlso: #00313

Format of Target ID:
Offset	Size	Description	(Table 00323)
 00h	BYTE	length
 01h	BYTE	0Eh (subvector "Target ID")
 02h  N BYTEs	target ID, 1-16 bytes
SeeAlso: #00313

Format of Telephone number subvector:
Offset	Size	Description	(Table 00324)
 00h	BYTE	length
 01h	BYTE	0Fh (subvector "Telephone number")
 02h  N BYTEs	telephone number
SeeAlso: #00313

Format of ASCII destination ID subvector:
Offset	Size	Description	(Table 00325)
 00h	BYTE	length
 01h	BYTE	10h (subvector "ASCII destination ID")
 02h  N BYTEs	destination ID
SeeAlso: #00313

Format of Parity subvector:
Offset	Size	Description	(Table 00326)
 00h	BYTE	03h (length)
 01h	BYTE	11h (subvector "Parity")
 02h	BYTE	parity type (see #00327)
SeeAlso: #00313

Bitfields for Connection Manager parity type:
Bit(s)	Description	(Table 00327)
 7	odd
 6	even
 5	mark
 4	space
 3	none
SeeAlso: #00326

Format of Bits per character subvector:
Offset	Size	Description	(Table 00328)
 00h	BYTE	03h (length)
 01h	BYTE	12h (subvector "Bits per character")
 02h	BYTE	bits per character
		bit 7: seven
		bit 6: eight
SeeAlso: #00313

Format of Number of stop bits subvector:
Offset	Size	Description	(Table 00329)
 00h	BYTE	03h (length)
 01h	BYTE	13h (subvector "Number of stop bits")
 02h	BYTE	stop bits
		bit 7: one
		bit 6: 1.5
		bit 5: two
SeeAlso: #00313

Format of Packet timer and Intercharacter timer subvectors:
Offset	Size	Description	(Table 00330)
 00h	BYTE	04h (length)
 01h	BYTE	subvector type
		14h Packet timer
		15h Intercharacter timer
 02h	WORD	(big-endian) unit of value representing 20ms
SeeAlso: #00313

Format of Flags subvector:
Offset	Size	Description	(Table 00331)
 00h	BYTE	03h (length)
 01h	BYTE	17h (subvector "Flags")
 02h	BYTE	flags
		bit 7: queueing requested
SeeAlso: #00313

Format of Parameter ranges subvector:
Offset	Size	Description	(Table 00332)
 00h	BYTE	length
 01h	BYTE	18h (subvector "Parameter ranges")
 02h  N BYTEs	subvector(s) of type 09h, 11h, 12h, or 13h
SeeAlso: #00313

Format of Flow control subvector:
Offset	Size	Description	(Table 00333)
 00h	BYTE	length (02h-04h)
 01h	BYTE	19h (subvector "Flow control")
 02h	BYTE	XOFF character
 03h	BYTE	XON character
Note:	if length is 02h, flow control is disabled; if length is 03h, any
	  character will be accepted as XON after an XOFF
SeeAlso: #00313
--------S-140400-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - INSTALLATION CHECK
	AX = 0400h
Return: AX = 0FF0h
SeeAlso: AX=0401h,AX=0408h
--------S-140401-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - INITIALIZE MODE
	AX = 0401h
	CX = mode
Return: nothing
SeeAlso: AX=0400h,AX=0402h
--------S-140402-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - EXTENDED INITIALIZE
	AX = 0402h
	CL = parameters
Return: nothing
SeeAlso: AX=0400h,AX=0401h
--------S-140403-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - SET TIMEOUT
	AX = 0403h
	CX = timeout
Return: nothing
SeeAlso: AX=0400h
--------S-140404-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - CLEAR THE RECEIVE BUFFER
	AX = 0404h
Return: nothing
SeeAlso: AX=0400h,AX=0405h,AX=0406h
--------S-140405-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - GET RECEIVE BUFFER COUNT
	AX = 0405h
Return: AX = number of characters in buffer
SeeAlso: AX=0400h,AX=0404h,AX=0407h
--------S-140406-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - CLEAR THE TRANSMIT BUFFER
	AX = 0406h
Return: nothing
SeeAlso: AX=0400h,AX=0404h,AX=0407h
--------S-140407-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - GET TRANSMIT BUFFER COUNT
	AX = 0407h
Return: AX = number of characters in the buffer
SeeAlso: AX=0400h,AX=0405h,AX=0406h
--------S-140408-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - UNINSTALL
	AX = 0408h
Return: nothing
SeeAlso: AX=0400h
--------S-1405-------------------------------
INT 14 - SERIAL - EXTENDED COMMUNICATION PORT CONTROL (CONVERTIBLE,PS)
	AH = 05h
	AL = function
	    00h read modem control register
	      Return: BL = modem control register (see #00334)
		      AH = status
	    01h write modem control register
	      BL = modem control register (see #00334)
	      Return: AX = status
	DX = port number
Note:	also supported by ArtiCom
SeeAlso: AH=00h,AH=1Fh,AX=8000h"ARTICOM",AH=FBh

Bitfields for modem control register:
Bit(s)	Description	(Table 00334)
 0	data terminal ready
 1	request to send
 2	OUT1
 3	OUT2
 4	LOOP
 5-7	reserved
--------S-1405-------------------------------
INT 14 - FOSSIL - DEINITIALIZE DRIVER
	AH = 05h
	DX = port number
Return: none
	DTR is not affected
SeeAlso: AH=00h,AH=04h"FOSSIL",AH=1Dh,AH=8Dh
--------S-1405-------------------------------
INT 14 - MultiDOS Plus IODRV - READ CHARACTER FROM PORT
	AH = 05h
	AL = timeout in seconds (00h = never)
Return: AL = status
	    00h successful
		AH = character read
	    01h read error
	    02h timed out
	    other modem status (CTS, DSR) changed
Note:	the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=02h,AH=04h"MultiDOS",AH=06h"MultiDOS",AH=22h"MultiDOS"
SeeAlso: INT 15/AH=13h"MultiDOS"
--------S-1405-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CHANGE PROTOCOL
	AH = 05h
	AL = protocol (see #00335)
	BH = new XOFF character (00h = current)
	BL = new XON character (00h = current)
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    FFh error
SeeAlso: AH=04h"Digiboard"

Bitfields for Digiboard protocol:
Bit(s)	Description	(Table 00335)
 7-4	unused
 3	RTS/CTS
 2	DSR
 1,0	XON/XOFF
--------S-1405-------------------------------
INT 14 - MBBIOS - DROP DTR AND RTS
	AH = 05h
	DX = port number
Return: none
SeeAlso: AH=00h"MBBIOS",AH=06h"MBBIOS",AH=06h"FOSSIL"
--------S-1405-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - CHANGE PORT PROTOCOL
	AH = 05h
	AL = new port protocol (see #00336)
	BH = new XOFF character
	BL = new XON character
	DX = port number
Return: AH = FFh if invalid protocol
SeeAlso: AH=00h,AH=04h"SERIAL",AH=06h"PC-MOS"

Bitfields for PC-MOS/386 serial port protocol:
Bit(s)	Description	(Table 00336)
 7	set to enable/disable CD monitoring, clear to set protocol
---bit 7 set---
 4	CD monitoring enabled
 5	automatic restart enabled
---bit 7 clear---
 0	receive XON/XOFF
 1	transmit XON/XOFF
 2	DTR/DSR
 3	RTS/CTS
----------1405-------------------------------
INT 14 - PhysTechSoft PTS ROM-DOS - SET PACKET
	AH = 05h
	CX = packet length
	DX = port number
	DS:SI -> packet
Return: AH = error code (0 = no error, -1 = error)
Notes:	The embedded PC can send messages at any time. The managing PC may
	  force the embedded PC to receive messages only after causing a reset
	  on the remote embedded PC.
    !!!from Matthias Paul:
    Description of the high-level control packets:
	After the reset the embedded PC will send a 4-byte packet "LOAD"
	  to the managing PC to indicate it is now able to receive commands.
	The managing PC can send commands using 6-byte sized packets starting
	  with "COMM" followed by a 2-byte command code:
	    "01" demand setup information
	    "02" demand sending of diagnostic information
	If diagnostic information is requested, the embedded PC will send back
	  a header packet starting with 4-byte "DIAG" followed by 2 bytes
	  indicating the count of diagnostic data packets following. Each
	  diagnostic data packet is sized 134 bytes, starting with the 4-byte
	  "DIAG", a 2-byte number packet, followed by 128 bytes of data.
	If setup information is requested, the embedded PC will send back
	  8 bytes length packets starting with "SETP" and 2 byte of setup
	  information of the LOADER and BIOS. The contents varies.
	If the embedded PC requests the managing PC to send a BIOS it will
	  send a 4 byte packet "BIOS".
	The managing PC will then send back a 6-byte sized BIOS header packet
	  starting with "BIOS" and a 2-byte indicator of the BIOS image size
	  in packets.
	The embedded PC will answer by sending a 6 byte packet starting with
	  "BIOS" followed by the running number of the demanded packet.
	The managing PC will then send the requested part of the BIOS image
	  in a 134 byte sized packet, starting with "BIOS", the 2 byte running
	  number of the packet and 128 bytes of the actual BIOS info.
	The embedded PC acknowledges that it received the BIOS with a 6-byte
	  packet "BIOS", followed by 2-bytes of 0.
	If the embedded PCs requests the managing PC to send the operating
	  system, it will follow the same proceduce as for requesting the
	  BIOS. The only difference is that instead of "BIOS", the string
	  "PTOS" will be used in the communication.
	Debug information packets have a length of 32 bytes starting with
	  the 4-byte "DEBU" signature, and followed by the contents of the
	  PCU registers in the following order: SP, SS, ES, DS, BP, DI, SI,
	  DX, CX, BX, AX, IP, CS, Flags. Debug information is send after
	  reaching the corresponding breakpoint.
     Description of the low-level packet protocol:
	Before sending a packet the sending side sends a byte 52h and for a
	  certain time (ca. 1 second for the embedded PC) waits for
	  confirmation (41h) from the receiving side. If no acknowledge is
	  received this	procedure is repeated 4 more times before an error is
	  returned.
	If acknowledge was received the following information is sent:
	 2 BYTEs  synchronization (50h, 50h)
	   BYTE	  data packet size - 1
	 2 BYTEs  CRC of the data
	 var.	  data
	 2 BYTEs  synchronization (F0h, F0h)
	The receiving side must acknowledge this by sending back two bytes
	  59h, 59h. If the sender does not receive the confirmation, it
	  tries 4 more times before returning an error.
SeeAlso: INT 14h/AH=06h, INT 15h/AX=E908h, INT 15h/E909h
--------N-1405--DXFFFF-----------------------
INT 14 - Connection Manager - CLOSE COMMUNICATION
	AH = 05h
	DX = FFFFh
	AL = connection ID
Return: AH = return code
	    00h successful
	    01h no such connection
	    02h invalid connection ID
		AL = correct connection ID
Desc:	terminate existing connection to allow another one to be established
Note:	if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
	  function, but redirects the port over the network; if DX is any other
	  value, the call is chained
SeeAlso: AH=04h/DX=FFFFh,AH=0Dh/DX=FFFFh
--------S-1406-------------------------------
INT 14 - FOSSIL - RAISE/LOWER DTR
	AH = 06h
	DX = port
	AL = DTR state to be set
	    00h = lower
	    01h = raise
Return: nothing
SeeAlso: AH=05h"MBBIOS",AH=1Ah
--------S-1406-------------------------------
INT 14 - MultiDOS Plus IODRV - WRITE CHARACTER TO PORT
	AH = 06h
	AL = character
Return: AL = status
	    00h successful
Notes:	the port number is stored at offset BEh in the Task Control Block
	if output queue is full, the calling task is blocked until the
	  character can be stored
SeeAlso: AH=01h,AH=04h"MultiDOS",AH=05h"MultiDOS",AH=21h"MultiDOS"
SeeAlso: INT 15/AH=13h"MultiDOS"
--------S-1406-------------------------------
INT 14 - MBBIOS - RAISE DTR AND RTS
	AH = 06h
	DX = port number
Return: none
SeeAlso: AH=05h"MBBIOS",AH=07h"MBBIOS"
--------S-1406-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DRIVER 'ID' FUNCTION
	AH = 06h
	DX = port number
Return: AH bit 7 set
	AL = number of highest function supported by driver
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
	  operating system by The Software Link, Inc.
SeeAlso: AH=18h"PC-MOS"
--------N-1406-------------------------------
INT 14 - TelAPI - WRITE BLOCK
	AH = 06h
	CX = number of characters to write
	DX = port number
	ES:DI -> buffer containing data
Return: AX = number of characters actually sent (negative on error)
	CX = ???
SeeAlso: AH=07h"TelAPI",AH=E0h"TelAPI",AH=E3h"TelAPI"
----------1406-------------------------------
INT 14 - PhysTechSoft PTS ROM-DOS - GET PACKET
	AH = 06h
	CX = buffer size for packet
	DX = port number
	DS:SI -> buffer for packet
Return: AH = error code (00h = no error, FFh = error)
	CX = packet size
SeeAlso: AH=05h"PTS ROM-DOS",INT 15/AX=E908h,INT 15/AX=E909h
--------N-1406--DXFFFF-----------------------
INT 14 - Connection Manager - SEND CHARACTER BLOCK
	AH = 06h
	DX = FFFFh
	AL = connection ID
	CX = number of characters to send
	ES:DI -> buffer containing data to be sent
Return: AH = return code (see #00303)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=04h/DX=FFFFh,AH=07h/DX=FFFFh,AH=09h/DX=FFFFh
--------S-1407-------------------------------
INT 14 - FOSSIL - RETURN TIMER TICK PARAMETERS
	AH = 07h
Return: AL = timer tick interrupt number
	AH = ticks per second on interrupt number in AL
	DX = approximate number of milliseconds per tick
SeeAlso: AH=16h
--------S-1407-------------------------------
INT 14 - MultiDOS Plus IODRV - GET PORT STATUS
	AH = 07h
Return: CL = modem status (see #00305)
	CH = character at head of input queue (if any)
	DX = number of characters in input queue
Note:	the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=03h,AH=05h"MultiDOS",AH=08h"MultiDOS",AH=09h"MultiDOS"
SeeAlso: AH=23h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1407-------------------------------
INT 14 - MBBIOS - SEND BREAK
	AH = 07h
	DX = port number
Return: none
SeeAlso: AH=06h"MBBIOS",AH=FAh"EBIOS"
--------S-1407-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - SEND RS-232 BREAK
	AH = 07h
	BX = duration of break in clock ticks
	DX = port number
Return: nothing
--------N-1407-------------------------------
INT 14 - TelAPI - READ BLOCK
	AH = 07h
	CX = length of buffer in bytes
	DX = port number
	ES:DI -> buffer for data
Return: AX > 0000h number of characters actually read
	AX = 0000h host has closed connection
	AX < 0000h error code (see #00397)
	CX = ???
Note:	translates CRLF into local EOL if the connection is in ASCII mode,
	  negotiates various Telnet options, and immediately executes several
	  different Telnet action commands
SeeAlso: AH=06h"TelAPI",AH=E0h"TelAPI",AH=E2h"TelAPI"
--------N-1407--DXFFFF-----------------------
INT 14 - Connection Manager - RECEIVE CHARACTER BLOCK
	AH = 07h
	DX = FFFFh
	AL = connection ID
	BL = flag
	    00h wait for data
	    nonzero do not wait if no data avaiable
	CX = size of receive buffer
	ES:DI -> buffer for received characters
Return: AH = return code (00h-02h,04h,FFh) (see #00303)
	BH = line status (see #00306)
	CX = number of characters received
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=01h/DX=FFFFh,AH=04h/DX=FFFFh,AH=06h/DX=FFFFh
--------S-1408-------------------------------
INT 14 - FOSSIL - FLUSH OUTPUT BUFFER WAITING TILL ALL OUTPUT IS DONE
	AH = 08h
	DX = port number
Return: nothing
SeeAlso: AH=09h"FOSSIL"
--------S-1408-------------------------------
INT 14 - MultiDOS Plus 4.0 IODRV - GET AND RESET PORT LINE STATUS
	AH = 08h
Return: AL = line status (see #00304)
	AH destroyed
Notes:	the port number is stored at offset BEh in the Task Control Block
	on every line status change, the line status is ORed with the line
	  status accumulator; this function returns the accumulator and clears
	  it
SeeAlso: AH=03h,AH=04h"MultiDOS",AH=07h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1408-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - ALTERNATE STATUS CHECK
	AH = 08h
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = RS232 status bits (see #00304 at AH=03h)
	ZF set if no characters queued
	ZF clear if character available
	    AL = next character
SeeAlso: AH=03h,AH=08h"PC-MOS",AH=09h"Digiboard",AH=14h"Digiboard"
--------S-1408-------------------------------
INT 14 - MBBIOS - NON-DESTRUCTIVE READ
	AH = 08h
	DX = port number
Return: AL = character (if AH bit 0 set)
	AH = status (see #00304)
SeeAlso: AH=0Bh"MBBIOS",AH=0Ch"FOSSIL"
--------S-1408-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - INPUT STATUS CHECK
	AH = 08h
	DX = port number
Return: CF set if carrier loss detected
	ZF set if input buffer empty
	ZF clear if characters available
	    AL = next character dequeued
--------N-1408--DXFFFF-----------------------
INT 14 - Connection Manager - RETURN DEFAULT CONNECTION PARAMETERS
	AH = 08h
	DX = FFFFh
	CX = size of buffer for parameters or 0000h to get length
	ES:DI -> buffer for parameter vector (see #00311)
Return: AH = return code
	    00h successful
		CX = number of bytes required (if CX=0000h on entry)
		CX = number of bytes omitted for lack of space (if CX nonzero)
	    nonzero invalid request
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=00h/DX=FFFFh,AH=0Fh/DX=FFFFh
--------S-1409-------------------------------
INT 14 - FOSSIL - PURGE OUTPUT BUFFER THROWING AWAY ALL PENDING OUTPUT
	AH = 09h
	DX = port number
Return: nothing
SeeAlso: AH=08h"FOSSIL",AH=0Ah"FOSSIL",AH=88h
--------S-1409-------------------------------
INT 14 - MultiDOS Plus IODRV - RESET PORT STATUS
	AH = 09h
Return: modem status byte cleared
Note:	the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=04h"MultiDOS",AH=07h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1409-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR BUFFERS
	AH = 09h
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    FFh error
SeeAlso: AH=08h"Digiboard",AH=0Ah"Digiboard",AH=10h"Digiboard"
--------S-1409-------------------------------
INT 14 - MBBIOS - GET/SET OPTIONS
	AH = 09h
	AL = option byte (see #00337)
	DX = port number???
Return: AL = old option byte
SeeAlso: AH=00h"MBBIOS",AH=04h"MBBIOS",AH=10h"FOSSIL"

Bitfields for MBBIOS option byte:
Bit(s)	Description	(Table 00337)
 0	transmit buffering enabled
 2	hardware handshaking enabled
 5	high-speed option enabled (see AH=00h"MBBIOS",#00302)
 other	reserved
--------S-1409-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - RESET I/O BUFFER POINTERS
	AH = 09h
	DX = port number
Return: nothing
SeeAlso: AH=13h"PC-MOS"
--------N-1409--DXFFFF-----------------------
INT 14 - Connection Manager - SEND BREAK
	AH = 09h
	DX = FFFFh
	AL = connection ID
Return: AH = return code (00h-02h) (see #00303 at AH=00h/DX=FFFFh)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=02h/DX=FFFFh,AH=03h/DX=FFFFh
--------S-140A-------------------------------
INT 14 - FOSSIL - PURGE INPUT BUFFER THROWING AWAY ALL PENDING INPUT
	AH = 0Ah
	DX = port number
Return: nothing
SeeAlso: AH=09h"FOSSIL",AH=85h
--------S-140A-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - INPUT QUEUE CHECK
	AH = 0Ah
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters available in buffer
Note:	this function is also supported by the PC-MOS/386 v5.01 $serial.sys
SeeAlso: AH=09h"Digiboard",AH=0Dh"Digiboard"
--------S-140A-------------------------------
INT 14 - MBBIOS - WRITE BUFFER
	AH = 0Ah
	CX = count
	ES:DI -> buffer (see #00338)
Return: AX = status (see #00304,#00305)
	CX = unsent character count
	DI updated
Note:	the PACCOM version of MBBIOS does not use CX or ES:DI; instead, ES
	  contains the segment of a buffer containing the packet to be sent,
	  which by default will be freed once the packet has been sent.	 Use
	  AH=0Ch"MBBIOS" to allocate the buffer.
SeeAlso: AH=01h,AH=0Bh"MBBIOS",AH=0Ch"MBBIOS",AH=19h"FOSSIL"

Format of MBBIOS PACCOM buffer:
Offset	Size	Description	(Table 00338)
 00h 504 BYTEs	data area
1F8h	WORD	length of data in data area
1FAh	BYTE	flags/status
		bit 7: don't discard buffer after transmitting data
		bit 6: buffer has been transmitted
1FBh	BYTE	reserved (0) for additional flags/status
1FCh	WORD	user data
1FEh	WORD	MBBIOS-internal pointer to next buffer
--------N-140A--DXFFFF-----------------------
INT 14 - Connection Manager - MODIFY ACTIVE CONNECTION PARAMETERS
	AH = 0Ah
	DX = FFFFh
	ES:DI -> vector string containing new parameters (see #00311)
Return: AH = return code (00h-03h,06h) (see #00303)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
Note:	any subvectors valid for the Change Parameters command replace the
	  existing values in the current set
SeeAlso: AH=00h/DX=FFFFh,AH=0Fh/DX=FFFFh
--------S-140B-------------------------------
INT 14 - FOSSIL - TRANSMIT NO WAIT
	AH = 0Bh
	AL = character
	DX = port number
Return: AX = result
	    0000h character not accepted
	    0001h character accepted
SeeAlso: AH=01h
--------S-140B-------------------------------
INT 14 - MBBIOS - READ BUFFER
	AH = 0Bh
	CX = size of buffer
	ES:DI -> buffer
Return: AH = composite line status (see #00304) formed by ORing all statuses
		  on receive interrupts; bit 0 set if additional characters
		  available
	AL = composite modem status (see #00305) formed by ORing all statuses
	CX = number of characters actually read
	DI updated
Note:	the PACCOM version of MBBIOS does not use CX or ES:DI on call,
	  instead returning ES set to the segment of the buffer containing a
	  received packet, or 0000h if no packets available; the buffer may
	  be freed with AH=0Ch"MBBIOS"
SeeAlso: AH=02h,AH=08h"MBBIOS",AH=0Ah"MBBIOS",AH=0Ch"MBBIOS",AH=18h"FOSSIL"
--------N-140B--DXFFFF-----------------------
INT 14 - Connection Manager - PREPARE FOR INBOUND CONNECTION
	AH = 0Bh
	DX = FFFFh
	AL = service name
	    00h use parameter file or default
	    01h use specified name
		ES:DI -> 16-byte blank-padded name
	BH = connection notification
	    00h program awaiting connection, don't notify user
	    01h notify user on connecting
	BL = connection type
	    00h connection will use Connection Manager API
Return: AH = return code (00h-02h) (see #00303 at AH=00h/DX=FFFFh)
	AL = connection ID if AH=00h
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=04h/DX=FFFFh,AH=0Ch/DX=FFFFh,AH=10h/DX=FFFFh
--------S-140C-------------------------------
INT 14 - FOSSIL - NON-DESTRUCTIVE READ AHEAD
	AH = 0Ch
	DX = port number
Return: AX = FFFFh character not available
	AX = 00xxh character xx available
SeeAlso: AH=08h"MBBIOS",AH=20h"FOSSIL"
--------S-140C-------------------------------
INT 14 - MBBIOS PACCOM support - BUFFER MANAGEMENT
	AH = 0Ch
	ES = segment of buffer to free, or 0000h to allocate new buffer
Return: ES = segment of allocated buffer (if ES=0000h on entry)
Note:	the PACCOM version of MBBIOS uses only ES as buffer address for
	  AH=0Ah and AH=0Bh
SeeAlso: AH=0Ah"MBBIOS",AH=0Bh"MBBIOS"
--------N-140C--DXFFFF-----------------------
INT 14 - Connection Manager - TEST FOR INBOUND CONNECTION REQUEST
	AH = 0Ch
	DX = FFFFh
	AL = connection ID from AH=0Bh/DX=FFFFh
Return: AH = return code (00h-03h) (see also #00303 at AH=00h/DX=FFFFh)
	    03h not prepared for inbound connection
	AL = connection ID (if AH=00h) or correct connection ID (if AH=02h)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=03h/DX=FFFFh,AH=04h/DX=FFFFh,AH=0Bh/DX=FFFFh
--------S-140D-------------------------------
INT 14 - FOSSIL - KEYBOARD READ WITHOUT WAIT
	AH = 0Dh
Return: AX = result
	    FFFFh character not available
	    xxyyh standard IBM-style scan code
SeeAlso: AH=0Eh
--------S-140D-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - GET POINTER TO CH_KEY_RDY FLAG
	AH = 0Dh
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: ES:BX -> CH_KEY_RDY flag (see #00339)
SeeAlso: AH=0Ah"Digiboard"

(Table 00339)
Values for Digiboard CH_KEY_RDY flag:
 00h	receive buffer empty
 FFh	characters available
--------S-140D-------------------------------
INT 14 - MBBIOS PACCOM support - SET TXD
	AH = 0Dh
	AL = new setting (FFh = 1.0)
Return: nothing
Desc:	specify the time from RTS to start or packet
SeeAlso: AX=0D00h,AH=0Eh"MBBIOS",AH=0Fh"MBBIOS"
--------N-140D--DXFFFF-----------------------
INT 14 - Connection Manager - TERMINATE CONNECTION CLIENT ACTIVITY
	AH = 0Dh
	DX = FFFFh
Return: AH = return code
	    00h successful
	    nonzero operation not terminated
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
Desc:	end all Connection Client TSR activity to allow it to be removed from
	  memory
SeeAlso: AH=05h/DX=FFFFh,AH=6Fh/BX=FFFFh
--------S-140D00-----------------------------
INT 14 - MBBIOS - GET AVAILABLE BYTES
	AX = 0D00h
Return: AX = bytes in transmit buffer
	CX = bytes in receive buffer
SeeAlso: AH=0Ah"MBBIOS",AH=0Bh"MBBIOS"
--------S-140D01-----------------------------
INT 14 - MBBIOS - LOWER ALL MODEM CONTROL SIGNALS
	AX = 0D01h
Return: nothing
Note:	this function lowers DTR, RTS, etc.
SeeAlso: AX=0D02h
--------S-140D02-----------------------------
INT 14 - MBBIOS - RAISE ALL MODEM CONTROL SIGNALS
	AX = 0D02h
Return: nothing
Note:	this function raises DTR, RTS, etc.
SeeAlso: AX=0D01h
--------S-140D03-----------------------------
INT 14 - MBBIOS - SET HANDSHAKE BYTE
	AX = 0D03h
	CL = new handshake byte
Return: CL = previous handshake byte
Note:	this function lowers DTR, RTS, etc.
--------S-140E-------------------------------
INT 14 - FOSSIL - KEYBOARD READ WITH WAIT
	AH = 0Eh
Return: AX = xxyyh standard IBM-style scan code
SeeAlso: AH=0Dh"FOSSIL"
--------S-140E-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - WRITE STRING
	AH = 0Eh
	CX = number of characters to write
	ES:BX -> string
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters actually written
	ZF clear if successful
	ZF set on error
SeeAlso: AH=0Fh"Digiboard"
--------S-140E-------------------------------
INT 14 - MBBIOS PACCOM support - SET PERSISTENCE
	AH = 0Eh
	AL = new setting (FFh = 1.0)
Return: nothing
Desc:	specify the time from end of DCD to RTS
SeeAlso: AH=0Dh"MBBIOS",AH=0Fh"MBBIOS"
--------N-140E--DXFFFF-----------------------
INT 14 - Connection Manager - SET HARDWARE FLOW STATE
	AH = 0Eh
	DX = FFFFh
	AL = connection ID from AH=04h/DX=FFFFh
	BL = RTS state (00h off, 01h on)
Return: AH = return code (00h-03h) (see also #00303 at AH=00h/DX=FFFFh)
	    03h invalid request (BL not 00h or 01h)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=03h/DX=FFFFh,AH=0Ah/DX=FFFFh
--------S-140F-------------------------------
INT 14 - FOSSIL - ENABLE/DISABLE FLOW CONTROL
	AH = 0Fh
	AL = bit mask describing requested flow control (see #00340)
	DX = port number
Return: nothing
SeeAlso: AH=09h"MBBIOS",AH=10h"FOSSIL"

Bitfields for FOSSIL requested flow control:
Bit(s)	Description	(Table 00340)
 0	XON/XOFF on transmit (watch for XOFF while sending)
 1	CTS/RTS (CTS on transmit/RTS on receive)
 2	reserved
 3	XON/XOFF on receive (send XOFF when buffer near full)
 4-7	all 1
--------S-140F-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - READ STRING
	AH = 0Fh
	CX = number of characters to read
	ES:BX -> buffer
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters read
	ZF clear if successful
	ZF set on error (line status or wrong number of characters)
SeeAlso: AH=0Eh"Digiboard"
--------S-140F-------------------------------
INT 14 - MBBIOS PACCOM support - SET SLOT TIME
	AH = 0Fh
	AL = new setting in clock ticks
Return: nothing
Desc:	specify the time from end of DCD to RTS
SeeAlso: AH=0Dh"MBBIOS",AH=0Eh"MBBIOS",AH=10h"MBBIOS"
--------N-140F--DXFFFF-----------------------
INT 14 - Connection Manager - RETURN ACTIVE CONNECTION PARAMETERS
	AH = 0Fh
	DX = FFFFh
	AL = connection ID
	CX = size of buffer or 0000h to get length of returned vector
	ES:DI -> buffer for connection parameter vector (see #00311)
Return: AH = return code (00h-02h,06h) (see #00303 at AH=00h/DX=FFFFh)
	CX = number of bytes which could not be returned because the given
	      buffer was too small
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=08h/DX=FFFFh,AH=0Ah/DX=FFFFh
--------S-1410-------------------------------
INT 14 - FOSSIL - EXTENDED ^C/^K CHECKING AND TRANSMIT ON/OFF
	AH = 10h
	AL = bit mask
	    bit 0: enable/disable ^C/^K checking
	    bit 1: enable/disable the transmitter
	DX = port number
Return: nothing
SeeAlso: AH=0Fh"FOSSIL"
--------S-1410-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR RECEIVE BUFFER
	AH = 10h
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    FFh error
SeeAlso: AH=09h"Digiboard",AH=11h"Digiboard"
--------S-1410-------------------------------
INT 14 - MBBIOS PACCOM support - SET CRC WAIT
	AH = 10h
	AL = new setting in clock ticks (should be at least 5 character times)
Return: nothing
Desc:	specify the time from start of last character to dropping RTS
SeeAlso: AH=0Dh"MBBIOS",AH=0Fh"MBBIOS"
--------N-1410--DXFFFF-----------------------
INT 14 - Connection Manager - QUERY SERVICE NAMES
	AH = 10h
	DX = FFFFh
	CL = subfunction
	    00h search first
	    01h search next
	ES:DI -> pattern buffer (see #00341)
Return: AH = return code (00h,01h,03h,06h) (see also #00303 at AH=00h/DX=FFFFh)
	    01h no (more) matching names
	    03h invalid request
	ES:DI buffer filled with reply buffer (see #00341) containing matched
		  name if AH=00h
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
Desc:	obtain the names of groups and lines available for connection requests,
	  and the names of active Connection Servers
SeeAlso: AH=04h/DX=FFFFh,AH=0Bh/DX=FFFFh

Format of Connection Manager pattern/reply buffer:
Offset	Size	Description	(Table 00341)
 00h	WORD	length of pattern (30h or 32h)
 02h 16 BYTEs	server pattern or name
 12h 16 BYTEs	group pattern or name
 22h 16 BYTEs	line pattern or name
 23h	BYTE	(optional) ???
 24h	BYTE	(optional, returned) current line status
		00h available
		01h out of service
		02h currently allocated to a connection
Note:	pattern may include '?' wildcard to match any character
--------S-1411-------------------------------
INT 14 - FOSSIL - SET CURRENT CURSOR LOCATION
	AH = 11h
	DH = row
	DL = column
Return: nothing
Note:	this is the same as INT 10/AH=02h
SeeAlso: AH=12h"FOSSIL"
--------S-1411-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR TRANSMIT BUFFER
	AH = 11h
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    FFh error
SeeAlso: AH=09h"Digiboard",AH=10h"Digiboard"
--------S-1411-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DISABLE PORT
	AH = 11h
	DX = port number
Return: AL = status
	    00h successful
	    01h IRQ for port is shared
	    02h IRQ was reserved
SeeAlso: AH=04h"SERIAL",AH=05h"SERIAL",AH=12h"PC-MOS"
--------S-1412-------------------------------
INT 14 - FOSSIL - READ CURRENT CURSOR LOCATION
	AH = 12h
Return: DH = row
	DL = column
Note:	this is the same as INT 10/AH=03h
SeeAlso: AH=11h"FOSSIL"
--------S-1412-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - GET TRANSMIT BUFFER FREE SPACE
	AH = 12h
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of bytes free
SeeAlso: AH=0Ah"Digiboard",AH=14h"Digiboard"
--------S-1412-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - GET CURRENT PORT PARAMETERS
	AH = 12h
	DX = port number
Return: AH = status
	    FFh port number invalid
	AL = line parameters (see #00304)
	AH = flow control configuration (see #00336 at AH=05h"PC-MOS")
	CX:BX = bps rate
	DL = XOFF character or 00h for none
	DH = XON character or 00h for none
--------S-1413-------------------------------
INT 14 - FOSSIL - SINGLE CHARACTER ANSI WRITE TO SCREEN
	AH = 13h
	AL = character
Return: nothing
Note:	should not be called if it is unsafe to call DOS
SeeAlso: AH=15h
--------S-1413-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - REGISTER A PORT WITH A TERMINAL
	AH = 13h
	DX = port number
Return: AH = status
	    FFh port number invalid
	    else
		ES:BX -> BYTE flag (00h buffer empty, FFh buffer contains data)
SeeAlso: AH=17h"PC-MOS"
--------S-1414-------------------------------
INT 14 - FOSSIL - ENABLE OR DISABLE WATCHDOG PROCESSING
	AH = 14h
	AL = 01h enable watchdog
	     00h disable watchdog
	DX = port number
Return: nothing
SeeAlso: INT 21/AH=2Bh/CX=6269h"WDTSR"
--------S-1414-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - OUTPUT STRING
	AH = 14h
	CX = number of characters in string
	DX = port number
	ES:BX -> string to be sent
	SI = timeout in timer ticks or 0000h for default
Return: AX = number of bytes actually sent
	ZF clear if successful
	ZF set on timeout
SeeAlso: AH=01h,AH=15h"PC-MOS"
--------S-1414-------------------------------
INT 14 - Digiboard - GET NUMBER OF BOARDS INSTALLED
	AH = 14h
Return: AX = number of boards installed
SeeAlso: AH=08h"Digiboard",AH=15h"Digiboard"
--------S-1415-------------------------------
INT 14 - FOSSIL - WRITE CHARACTER TO SCREEN USING BIOS SUPPORT ROUTINES
	AH = 15h
	AL = character
Return: nothing
SeeAlso: AH=13h"FOSSIL"
--------S-1415-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - INPUT STRING
	AH = 15h
	CX = size of buffer
	DX = port number
	ES:BX -> buffer for received characters
	SI = timeout in clock ticks or 0000h for default
Return: AX = number of characters actually read
	ZF set on timeout (no data available)
SeeAlso: AH=02h,AH=14h"PC-MOS",AH=16h"PC-MOS"
--------S-1415-------------------------------
INT 14 - Digiboard - ENABLE/DISABLE MEMORY
	AH = 15h
	AL = new state (00h disabled, 01h enabled)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=14h"Digiboard",AH=16h"Digiboard"
--------S-1416-------------------------------
INT 14 - FOSSIL - INSERT/DELETE FUNCTION FROM TIMER TICK CHAIN
	AH = 16h
	AL = function
	    00h = delete
	    01h = add
	ES:DX -> routine to call
Return: AX = status
	    0000h successful
	    0001h unsuccessful
SeeAlso: AH=07h"FOSSIL"
--------S-1416-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - LINK TO ANOTHER SERIAL DRIVER
	AH = 16h
	ES:BX -> calling driver's INT 14 entry point
Return: nothing
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
	  operating system by The Software Link, Inc.
--------S-1416-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CCB COMMAND
	AH = 16h
	AL = CCB command number (see #00342) (see also following entries)
	BL = byte 2
	BH = byte 3
	CL = byte 1 (for all channel functions except 4Eh and 4Fh)
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AX=1646h,AH=18h"Digiboard"

(Table 00342)
Values for Digiboard CCB command number:
 40h	Set Receive Mid Water Mark
 41h	Set Receive High Water Mark
 42h	Flush Receive Buffer
 43h	Flush Transmit Buffer
 44h	Transmit Pause
 45h	Transmit Resume
 46h	Set Interrupt to Host Mask
 47h	Set Baud, Data, Stop and Parity
 48h	Send Break
 49h	Set Modem Lines
 4Ah	Set Break Count
 4Bh	Set Handshake
 4Ch	Set Xon/Xoff Characters
 4Dh	Set Transmit Mid Water Mark
 4Eh	IRQ Polling Timer to Host
 4Fh	Buffer Set All
 50h	Port On
 51h	Port Off
 52h	Receive Pause
 53h	Special Character Interrupt
 54h	RS-422 Enable
--------S-141646-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET INTERRUPT TO HOST MASK
	AX = 1646h
	BL = bits to set
	BH = bits to clear
	CL = byte 1
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=16h"Digiboard",AX=1647h
--------S-141647-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET BAUD/DATABITS/STOPBITS/PARITY
	AX = 1647h
	BL = baud
	BH = datatype
	CL = byte 1
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=16h"Digiboard",AX=1646h,AX=1649h
--------S-141649-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET MODEM LINES
	AX = 1649h
	BL = bits to set
	BH = bits to clear
	CL = byte 1
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=16h"Digiboard",AX=1647h
--------S-14164A-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET BREAK COUNT
	AX = 164Ah
	BL = break count
	CL = byte 1
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=16h"Digiboard",AX=1649h,AX=164Bh
--------S-14164B-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET HANDSHAKE
	AX = 164Bh
	BL = bits to set
	BH = bits to clear
	CL = byte 1
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=16h"Digiboard",AX=1649h,AX=164Ch
--------S-14164C-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET XON/XOFF CHARACTERS
	AX = 164Ch
	BL = XON character
	BH = XOFF character
	CL = byte 1
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=16h"Digiboard",AX=164Bh,AX=164Dh
--------S-14164D-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET TRANSMIT MID-WATER MARK
	AX = 164Dh
	BX = new mid-water mark
	CL = byte 1
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=16h"Digiboard",AX=164Ch,AX=164Eh,AX=164Fh
--------S-14164E-----------------------------
INT 14 - Digiboard - CCB COMMAND - IRQ POLLING TIMER TO HOST
	AX = 164Eh
	BL = ticks
	BH = ???
	CL = mode
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=16h"Digiboard",AX=164Dh
--------S-14164F-----------------------------
INT 14 - Digiboard - CCB COMMAND - BUFFER SET ALL
	AX = 164Fh
	BL = size
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=16h"Digiboard",AX=164Dh
--------S-141653-----------------------------
INT 14 - Digiboard - CCB COMMAND - SPECIAL CHARACTER INTERRUPT
	AX = 1653h
	BL = enable/disable
	BH = special character
	CL = byte 1
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h error
	    FFh error
SeeAlso: AH=16h"Digiboard",AX=1646h
--------S-1417-------------------------------
INT 14 - FOSSIL - REBOOT SYSTEM
	AH = 17h
	AL = method
	    00h = cold boot
	    01h = warm boot
SeeAlso: INT 16/AX=E0FFh,INT 19,INT 60/DI=0606h
--------S-1417-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - WRITE MODEM CONTROL REGISTER
	AH = 17h
	AL = new value for UART's modem control register
	DX = port number
Return: nothing
--------S-1418-------------------------------
INT 14 - FOSSIL - READ BLOCK
	AH = 18h
	CX = maximum number of characters to transfer
	DX = port number
	ES:DI -> user buffer
Return: AX = number of characters transferred
SeeAlso: AH=19h"FOSSIL",AH=83h"COURIERS",AX=FF02h,INT 6B/AX=0100h
--------S-1418-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - SEND BIOS COMMAND
	AH = 18h
	ES:BX -> 16-byte command string
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h timeout
	AL = mailbox status
	    00h no errors
	    8Xh BIOS error
	ES:BX buffer filled in with mailbox string
	ZF clear if no errors
	ZF set if either status byte contains an error code
SeeAlso: AH=16h"Digiboard"
--------S-1418-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - GET DRIVER DESCRIPTION
	AH = 18h
	DX = port number
Return: DS:BX -> 40-byte buffer containing a string identifying the serial
		driver
SeeAlso: AH=06h"PC-MOS"
--------S-1419-------------------------------
INT 14 - FOSSIL - WRITE BLOCK
	AH = 19h
	CX = maximum number of characters to transfer
	DX = port number
	ES:DI -> user buffer
Return: AX = number of characters transferred
SeeAlso: AH=18h"FOSSIL",AH=86h,INT 6B/AX=0000h
--------S-1419-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - SPECIAL CHARACTER INTERRUPT
	AH = 19h
	BL = flag
	    00h disable special character interrupt
	    FFh enable interrupt
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    FFh failed
SeeAlso: AH=1Ah"Digiboard"
--------S-1419-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - SELECTIVE BUFFER FLUSH
	AH = 19h
	AL = what to flush
	    bit 0: input buffer
	    bit 1: output buffer
	DX = port number
Return: nothing
SeeAlso: AH=09h"PC-MOS"
--------S-141A-------------------------------
INT 14 - FOSSIL - BREAK BEGIN OR END
	AH = 1Ah
	AL = 00h stop sending 'break'
	     01h start sending 'break'
	DX = port number
Return: nothing
SeeAlso: AH=06h"FOSSIL",AH=8Ah,AH=FAh
--------S-141A-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X - SPECIAL CHARACTER FLAG/COUNTER
	AH = 1Ah
	BX = subfunction
	    00h return pointer to special character flag byte
	    01h return pointer to special character counter word
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: ES:BX -> special character flag or counter
Notes:	flag is FFh if one or more special characters are in the receive
	  buffer; it is 00h and the counter is invalid if no special characters
	  are in the receive buffer
	counter (if valid) contains the number of characters in the receive
	  buffer up to and including the last-received special character
--------S-141B-------------------------------
INT 14 - FOSSIL - RETURN INFORMATION ABOUT THE DRIVER
	AH = 1Bh
	DX = port number
	CX = size of user buffer
	ES:DI -> user buffer for driver info (see #00343)
Return: AX = number of characters transferred
	CX = 3058h ("0X") (X00 FOSSIL only)
	DX = 2030h (" 0") (X00 FOSSIL only)

Format of FOSSIL driver info:
Offset	Size	Description	(Table 00343)
 00h	WORD	size of structure in bytes
 02h	BYTE	FOSSIL spec driver conforms to
 03h	BYTE	revision level of this specific driver
 04h	DWORD	pointer to ASCIZ identification string
 08h	WORD	size of the input buffer
 0Ah	WORD	number of bytes left in buffer
 0Ch	WORD	size of the output buffer
 0Eh	WORD	number of bytes left in buffer
 10h	BYTE	width of screen
 11h	BYTE	length of screen
 12h	BYTE	actual baud rate, computer to modem
--------S-141C-------------------------------
INT 14 - X00 FOSSIL - ACTIVATE PORT
	AH = 1Ch
	DX = port number
Return: AX = 1954h if successful
	BL = maximum function number supported (not including 7Eh and above)
	BH = revision of FOSSIL specification supported
Note:	this is a duplicate of AH=04h, so that AH=04h may be made compatible
	  with the PS/2 BIOS in a future release
SeeAlso: AH=04h"FOSSIL",AH=1Dh
--------S-141D-------------------------------
INT 14 - X00 FOSSIL - DEACTIVATE PORT
	AH = 1Dh
	DX = port number
Return: none
Notes:	this is a duplicate of AH=05h, so that AH=05h may be made compatible
	  with the PS/2 BIOS in a future release
	ignored if the port was never activated with AH=04h or AH=1Ch
SeeAlso: AH=05h"FOSSIL",AH=1Ch
--------S-141E-------------------------------
INT 14 - X00 FOSSIL - EXTENDED LINE CONTROL INITIALIZATION
	AH = 1Eh
	AL = break status
	    00h if break
	    01h if no break
	BH = parity (see #00344)
	BL = number of stop bits
	    00h one stop bit
	    01h two stop bits (1.5 if 5 bit word length)
	CH = word length (see #00345)
	CL = bps rate (see #00346)
	DX = port number
Return: AX = port status code (see #00304,#00305)
Notes:	this function is intended to exactly emulate the PS/2 BIOS AH=04h call
	if the port was locked at X00 load time, the appropriate parameters are
	  ignored
SeeAlso: AH=00h,AH=04h"SERIAL"

(Table 00344)
Values for X00 FOSSIL parity:
 00h	no parity
 01h	odd parity
 02h	even parity
 03h	stick parity odd
 04h	stick parity even
SeeAlso: #00307,#00345,#00346

(Table 00345)
Values for X00 FOSSIL word length:
 00h	5 bits
 01h	6 bits
 02h	7 bits
 03h	8 bits
SeeAlso: #00308,#00344,#00346

(Table 00346)
Values for X00 FOSSIL bps rate:
 00h	110
 01h	150
 02h	300
 03h	600
 04h	1200
 05h	2400
 06h	4800
 07h	9600
 08h	19200
SeeAlso: #00309,#00344,#00345
--------S-141E------------------------------------
INT 14 - HUNTER 16 - READ COMMS PARAMETERS
	AH = 1Eh
	CX = channel number (00h COM1, 01h COM2, ...)
	DS:BX -> buffer for communications parameters (see #00347)
Return: DS:BX buffer filled
Note:	the Husky Hunter 16 is an 8088-based ruggedized laptop.	 Other family
	  members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk.
SeeAlso: AH=20h"HUNTER"

Format of HUNTER 16 communications parameters:
Offset	Size	Description	(Table 00347)
 00h	BYTE	communications type (00h IBM, nonzero Husky)
 01h	BYTE	port number (00h COM1, 01h COM2)
 02h	BYTE	baud rate (00h 110 bps, 01h 150, 02h 300, 03h 600, 04h 1200,
		  05h 2400, 06h 4800, 07h 9600, 08h 19200, 09h 38400)
 03h	BYTE	data bits (01h seven, 02h eight)
 04h	BYTE	parity (00h none, 01h odd, 02h even)
 05h	BYTE	stop bits (00h one, 01h two)
 06h	BYTE	handshake (see #00348)
 07h	BYTE	handshake protocol (00h none, 01h Xon/Xoff, 02h HWK3780)
 08h	BYTE	Nulls after CR (0-20)
 09h	BYTE	LF (00h off, 01h on)
 0Ah	BYTE	Serig. 0..7Fh: Ignore this character
		       80h: Serig off
 0Bh	BYTE	echo (00h off, 01h on)
 0Ch	BYTE	transmit timeout in seconds (1-60) or 00h to disable
 0Dh	BYTE	receive timeout in seconds (1-60) or 00h to disable
 0Eh  5 BYTEs	reserved

Bitfields for HUNTER 16 handshake:
Bit(s)	Description	(Table 00348)
 0-1	0: RTS off, 1: RTS hold, 2: RTS true
 2	DTR enabled
 4	CTS enabled
 5	DSR enabled
 6	DCD enabled
--------S-141F-------------------------------
INT 14 - X00 FOSSIL - EXTENDED SERIAL PORT STATUS/CONTROL
	AH = 1Fh
	DX = port number
	AL = direction
	    00h read modem control register
		Return: BL = modem control register (see #00349)
			AH = status
	    01h write modem control register
		BL = modem control register (see #00349)
		Return: AX = status
Notes:	this function is intended to exactly emulate the PS/2 BIOS AH=05h call
	X00 forces BL bit 3 set (interrupts cannot be disabled)
SeeAlso: AH=00h,AH=05h"SERIAL"

Bitfields for X00 FOSSIL modem control register:
Bit(s)	Description	(Table 00349)
 0	data terminal ready
 1	request to send
 2	OUT1
 3	OUT2 (interrupts) enabled
 4	LOOP
 5-7	reserved
--------S-1420-------------------------------
INT 14 - X00 FOSSIL - DESTRUCTIVE READ WITH NO WAIT
	AH = 20h
	DX = port number
Return: AH = 00h if character was available
	    AL = next character (removed from receive buffer)
	AX = FFFFh if no character available
SeeAlso: AH=0Ch,AH=21h"X00"
--------S-1420-------------------------------
INT 14 - Alloy MW386 - ATTACH LOGICAL COMMUNICATIONS PORT TO PHYSICAL PORT
	AH = 20h
	AL = logical port (01h COM1, 02h COM2)
	DX = physical port number
Return: AX = status
	    0000h successful
	    FFFFh failed
SeeAlso: AH=21h"Alloy",AH=22h"Alloy",AH=23h"Alloy",INT 17/AH=8Bh"Alloy"
--------S-1420-------------------------------
INT 14 - MultiDOS Plus - INITIALIZE PORT
	AH = 20h
	AL = port parameters (see #00300 at AH=00h"SERIAL")
	DX = port number (0-3)
Return: AH = status
	    00h successful
	    41h no such port
	    64h monitor mode already active
SeeAlso: AH=00h"SERIAL",AH=04h"MultiDOS",AH=21h"MultiDOS",AH=23h"MultiDOS"
--------S-1420-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - CHECK OUTPUT QUEUE
	AH = 20h
	DX = port number
Return: AX = number of bytes in output buffer
SeeAlso: AH=0Ah"Digiboard"
--------S-1420------------------------------------
INT 14 - HUNTER 16 - SELECT COMMS PARAMETERS
	AH = 20h
	CX = channel number (00h COM1, 01h COM2, ...)
	DS:BX -> buffer with communications parameter (see #00347)
Return: AX = status
	    0000h successful
	    0001h invalid parameter
SeeAlso: AH=1Eh"HUNTER",AH=21h"HUNTER"
--------S-1421-------------------------------
INT 14 - X00 FOSSIL - STUFF RECEIVE BUFFER
	AH = 21h
	AL = character
	DX = port number
Return: nothing
Notes:	the given character is inserted at the end of the receive buffer as if
	  it had just arrived from the serial port; all normal receive
	  processing (XON/XOFF, ^C/^K) is performed on the character
	fully re-entrant
SeeAlso: AH=20h"X00"
--------S-1421-------------------------------
INT 14 - Alloy MW386 v1.x only - RELEASE PHYSICAL COMMUNICATIONS PORT
	AH = 21h
	DX = physical port number
Return: AX = status
	    0000h successful
	    FFFFh failed
SeeAlso: AH=20h"Alloy",AH=22h"Alloy"
--------S-1421-------------------------------
INT 14 - MultiDOS Plus - TRANSMIT CHARACTER
	AH = 21h
	AL = character to send
	DX = port number
Return: AH = status (see #00350)
Note:	monitor mode must have been turned on with AH=24h before calling
SeeAlso: AH=20h"MultiDOS",AH=22h"MultiDOS",AH=24h"MultiDOS"

(Table 00350)
Values for MultiDOS Plus status:
 00h	successful
 39h	no DSR or CTS
 3Ch	no DSR
 3Bh	no CTS
 41h	no such port
 42h	monitor mode not active
 97h	timed out
--------S-1421-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - OUTPUT CHARACTER, WITH TIMEOUT
	AH = 21h
	AL = char to send
	DX = port number
	SI = timeout in timer ticks (0000h = default)
Return: after character is sent or timeout expires
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
	  operating system by The Software Link, Inc.
SeeAlso: AH=01h,AH=0Eh"Digiboard",AH=22h"PC-MOS"
--------S-1421------------------------------------
INT 14 - HUNTER 16 - EXTENDED CONTROL
	AH = 21h
	AL = command
	    01h force transmission of buffer
	    02h clear transmit buffer
	    03h clear receive buffer
	DX = port (00h COM1, 01h COM2)
Return: AH = extended status
Desc:	executes the command on the selected port
SeeAlso: AH=1Eh"HUNTER",AH=20h"HUNTER",AH=22h"HUNTER",AH=24h"HUNTER"
--------S-1422-------------------------------
INT 14 - Alloy MW386 v2+ - RELEASE LOGICAL COMMUNICATIONS PORT
	AH = 22h
	AL = logical port (01h COM1, 02h COM2)
Return: AX = status (0000h successful)
SeeAlso: AH=20h"Alloy",AH=21h"Alloy"
--------S-1422-------------------------------
INT 14 - MultiDOS Plus - RECEIVE CHARACTER
	AH = 22h
	DX = port number
Return: AH = status (see also AH=21h"MultiDOS")
	    00h successful
		AL = character
	    3Dh framing and parity error
	    3Eh overrun error
	    3Fh framing error
	    40h parity error
	    96h ring buffer overflow
Note:	if no character is available, this function waits until a character
	  arrives or an implementation-dependent timeout elapses
SeeAlso: AH=20h"MultiDOS",AH=21h"MultiDOS",AH=27h
--------S-1422-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - RECEIVE CHARACTER, WITH TIMEOUT
	AH = 22h
	DX = port number
	SI = timeout in timer ticks (0000h = default)
Return: AH = port status (see also #00304 at AH=03h)
	    bit 7 = 1 indicates time-out
	AL = character received
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
	  operating system by The Software Link, Inc.
SeeAlso: AH=02h,AH=0Fh"Digiboard",AH=21h"PC-MOS"
--------S-1422------------------------------------
INT 14 - HUNTER 16 - EXTENDED STATUS
	AH = 22h
	DX = port (00h COM1, 01h COM2)
Return: AH = extended status
	BX = number of characters in input buffer
	CX = number of characters in output buffer
Desc:	returns the most recent Extended Status code for the port
SeeAlso: AH=21h"HUNTER"
--------S-1423-------------------------------
INT 14 - Alloy MW386 v2+ - GET PORT NUMBER FROM LOGICAL PORT ID
	AH = 23h
	AL = logical port (01h COM1, 02h COM2)
	DH = user ID
	DL = process ID (DH,DL both FFh for current task)
Return: AL = MW386 port mode (see #00351)
	CX = MW386 port number
	DH = owner's user ID
	DL = owner's task ID
SeeAlso: AH=20h"Alloy",INT 17/AH=8Bh"Alloy"

Bitfields for MW386 port mode:
Bit(s)	Description	(Table 00351)
 0	port is shared (spooler only)
 1	port is spooled instead of direct (spooler only)
 2	port is assigned as logical COM device, not in spooler
 3	port is free
--------S-1423-------------------------------
INT 14 - MultiDOS Plus - GET PORT STATUS
	AH = 23h
	DX = port number
Return: AH = line status (see #00304 at AH=03h)
	AL = modem status (see #00305 at AH=03h)
SeeAlso: AH=03h,AH=07h"MultiDOS",AH=20h"MultiDOS"
--------S-1423-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DECLARE PORT OWNERSHIP
	AH = 23h
	DX = port number
	BX = TCB segment/selector address of owner task
Return: nothing
SeeAlso: AH=0Dh"Digiboard",AH=21h"PC-MOS",AH=22h"PC-MOS"
--------S-1423------------------------------------
INT 14 - HUNTER 16 - CONTROL HANDSHAKE LINES
	AH = 23h
	BH = handshake line to set (00h RTS, 01h DTR)
	BL = new level (00h low, 01h high)
Return: nothing
Desc:	sets the handshake lines of COM1 to the desired level
SeeAlso: AH=21h"HUNTER",AH=24h"HUNTER"
--------S-1424-------------------------------
INT 14 - Alloy MW386 v2+ - CHANGE PHYSICAL PORT PARAMETERS
	AH = 24h
	CX = physical I/O port number
	DS:DX -> configuration table (see #00352)
Return: AH = 00h
Note:	invalid port numbers are merely ignored
SeeAlso: INT 17/AH=96h

Format of Alloy MW386 configuration table:
Offset	Size	Description	(Table 00352)
 00h	BYTE	baud rate (see #00353)
 01h	BYTE	data bits (00h=5, 01h=6, 02h=7, 03h=8)
 02h	BYTE	parity (00h none, 01h odd, 02h even)
 03h	BYTE	stop bits (00h=1, 01h=2)
 04h	BYTE	receive flow control
		00h none, 01h XON/XOFF, 02h DTR/DSR, 03h XPC, 04h RTS/CTS
 05h	BYTE	transmit flow control (as for receive)

(Table 00353)
Values for Alloy MW386 baud rate:
 00h	38400
 01h	19200
 02h	9600
 03h	7200
 04h	4800
 05h	3600
 06h	2400
 07h	2000
 08h	1200
 09h	600
 0Ah	300
 0Bh	150
 0Ch	134.5
SeeAlso: #00309
--------S-1424-------------------------------
INT 14 - MultiDOS Plus - SET MONITOR MODE
	AH = 24h
	AL = port status storage
	    00h single status for entire receive buffer
	    01h separate status kept for each byte in receive buffer
	DX = port number
Return: AH = status
	    00h successful
	    3Ah invalid status storage specified
	    41h no such port
	    64h monitor mode already active
Note:	in monitor mode, MultiDOS redirects all BIOS video output to a serial
	  port
SeeAlso: AH=20h"MultiDOS",AH=25h
--------S-1424-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - ???
	AH = 24h
Return: ???
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
	  operating system by The Software Link, Inc.
--------S-1424------------------------------------
INT 14 - HUNTER 16 - CONTROL CTS HANDSHAKING
	AH = 24h
	AL = new CTS handshake state for COM1 (00h disabled, 01h enabled)
Return: nothing
SeeAlso: AH=23h"HUNTER",AH=25h"HUNTER",AH=26h"HUNTER"
--------S-1425-------------------------------
INT 14 - MultiDOS Plus - CLEAR BUFFERS
	AH = 25h
	AL = function
	    00h only clear buffers
	    01h clear buffers and deactivate
	DX = port number
Return: AH = status
	    00h successful
	    3Ah invalid function
	    41h no such port
	    42h monitor mode not active
SeeAlso: AH=20h"MultiDOS",AH=24h"MultiDOS"
--------S-1425------------------------------------
INT 14 - HUNTER 16 - CONTROL RS232 DRIVERS
	AH = 25h
	AL = new state of RS232 drivers (00h off, 01h on)
Return: nothing
Note:	this function can be used to save power by turning off the RS232
	  drivers.  It can also be used to turn on the RS232 drivers before
	  connecting to a remote system to avoid "garbage" while the drivers
	  turn on.
SeeAlso: AH=23h"HUNTER",AH=24h"HUNTER",AH=26h"HUNTER"
--------S-1426------------------------------------
INT 14 - HUNTER 16 - CONTROL RI POWER UP
	AH = 26h
	AL = 00h enable RI power up
	    else disable RI power up
Return: nothing
Desc:	control whether the Ring Indicator handshake can power up the Hunter
--------S-1427-------------------------------
INT 14 - MultiDOS Plus - GET BUFFER CHARACTER COUNT
	AH = 27h
	DX = port number
Return: AH = status
	    00h successful
	    41h no such port
	    42h monitor mode not active
	AL = number of characters in receive buffer
--------S-1427------------------------------------
INT 14 - HUNTER 16 - GET INSTALLED PROTOCOLS COUNT
	AH = 27h
	AL = number of extended protocols installed (since last call)
Return: AL = total number installed, including new ones
Desc:	Returns the number of extended communication protocols installed
SeeAlso: AH=25h"HUNTER",AH=28h"HUNTER"
--------S-1428------------------------------------
INT 14 - HUNTER 16 - GET PROTOCOL NAME
	AH = 28h
	AL = protocol handle
	DS:BX -> 8 character buffer for protocol name
Return: AH = status
	    00h successful
		DS:BX buffer filled with the protocol name
	    FFh failed
SeeAlso: AH=27h"HUNTER",AH=29h"HUNTER"
--------S-1429------------------------------------
INT 14 - HUNTER 16 - GET PROTOCOL HANDLE
	AH = 29h
	DS:BX -> buffer containing the protocol name
Return: AH = status
	    00h successful
		AL = handle
	    FFh failed
SeeAlso: AH=28h"HUNTER",AH=2Ah"HUNTER"
--------S-142A------------------------------------
INT 14 - HUNTER 16 - EXTENDED PROTOCOL MENU
	AH = 2Ah
	AL = protocol handle
Return: AH = status
	    00h successful
	    FFh failed
	AL = menu handle
SeeAlso: AH=29h"HUNTER",AH=2Bh"HUNTER"
--------S-142B------------------------------------
INT 14 - HUNTER 16 - GET EXTENDED PROTOCOL PARAMETERS
	AH = 2Bh
	AL = protocol handle
	DS:BX -> buffer for extended protocol parameters
Return: AH = status
	    00h successful
		DS:BX buffer filled with extended parameters
	    FFh failed
SeeAlso: AH=2Ah"HUNTER"
--------S-142C00----------------------------------
INT 14 - HUNTER 16 - GET DTR
	AX = 2C00h
Return: AH = 00h
	BL = current state
	    00h	 normal DTR operation
	    else DTR is forced high
Desc:	Indicates whether the DTR signal on COM1 is forced high
Note:	the Husky Hunter 16 is an 8088-based ruggedized laptop.	 Other family
	  members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk.
SeeAlso: AH=2Ch"SET DTR"
--------S-142C------------------------------------
INT 14 - HUNTER 16 - SET DTR
	AH = 2Ch
	AL nonzero
	BL = new state
	    00h	 normal operation
	    else force DTR high
Return: AH = 00h
Desc:	determine whether the DTR signal on COM1 should be forced high
SeeAlso: AX=2C00h
--------N-1436-------------------------------
INT 14 - ComShare - INSTALLATION CHECK
	AH = 36h
Return: AX = 4353h ('CS') if installed
	    BX = bitmap of installed ports (bit 0: COM1 is gateway, etc.)
	    CX reserved for future use
	    WORD DX:[0100h] = ComShare version number
Program: The ComShare System is a modem-sharing program for NetBIOS and
	  NetWare-based networks by NashaKala Corporation
Note:	ComShare supports the standard BIOS INT 14h calls with a slight
	  change in the interpretation of speed values
	  (see #00309 at AH=04h"SERIAL")
SeeAlso: AH=00h"SERIAL",AH=04h"SERIAL",AX=F4FFh
--------t-144000-----------------------------
INT 14 - I1541 - INSTALLATION CHECK
	AX = 4000h
Return: AX = 1541h if installed
	    BH = I1541 major version (BCD)
	    BL = I1541 minor version (BCD)
	    CX = 0000h
--------t-144001-----------------------------
INT 14 - I1541 - TEST IF 1541 CABLE CONNECTED
	AX = 4001h
Return: CF clear if connected
	    BL = LPT number where 1541 cable is connected (1..3)
	CF set if cable not connected
Desc:	scan all the LPT ports searching for the adapter cable
SeeAlso: AX=4000h
--------t-144002-----------------------------
INT 14 - I1541 - SELECT LPT PORT FOR OUTPUT
	AX = 4002h
	BL = LPT number (1..3)
Return: CF clear if successful
	CF set otherwise
Desc:	force the input output routines to work on the cable placed on LPT BL
SeeAlso: AX=4001h
--------t-144003-----------------------------
INT 14 - I1541 - RESET ALL DEVICES
	AX = 4003h
Return: nothing
Desc:	send a reset pulse of 100ms to all CBM devices
Note:	it is necessary to wait about 2 seconds after reset before executing
	  other	instructions
SeeAlso: AX=4000h,AX=4004h
--------t-144004-----------------------------
INT 14 - I1541 - SEND LISTEN SIGNAL
	AX = 4004h
	BH = device number (0..15)
Return: CF clear if successful
	CF set on error
	    AL = error number (see #00354)
SeeAlso: AX=4005h,AX=4006h

(Table 00354)
Values for I1541 error number:
 00h	device not present
 01h	listener not ready
 02h	missing EOI time-out
 03h	EOI not completed
 04h	data not released
 05h	frame error
--------t-144005-----------------------------
INT 14 - I1541 - SEND SECONDARY ADDRESS FOR LISTEN
	AX = 4005h
	BL = channel number and mode (see #00355)
Return: CF clear if successful
	CF set on error
	    AL = error number (see #00354)
SeeAlso: AX=4004h,AX=4006h

Bitfields for I1541 channel number and mode:
Bit(s)	Description	(Table 00355)
 7-4	mode
	0110 read/write
	1110 close channel
	1111 open channel
 3-0	channel number
--------t-144006-----------------------------
INT 14 - I1541 - SEND UNLISTEN SIGNAL
	AX = 4006h
Return: CF clear if successful
	CF set on error
	    AL = error number (see #00354)
SeeAlso: AX=4004h,AX=4005h
--------t-144007-----------------------------
INT 14 - I1541 - SEND TALK SIGNAL
	AX = 4007h
	BH = device number (0-15)
Return: CF clear if successful
	CF set on error
	    AL = error number (see #00354)
SeeAlso: AX=4008h,AX=4009h
--------t-144008-----------------------------
INT 14 - I1541 - SEND SECONDARY ADDRESS FOR TALK
	AX = 4008h
	BL = channel number and mode (see #00355)
Return: CF clear if successful
	CF set on error
	    AL = error number (see also #00354)
		40h turn around time-out
SeeAlso: AX=4007h,AX=4009h
--------t-144009-----------------------------
INT 14 - I1541 - SEND UNTALK SIGNAL
	AX = 4009h
Return: CF clear if successful
	CF set on error
	   AL = error number (see #00354)
SeeAlso: AX=4007h,AX=4008h
--------t-14400A-----------------------------
INT 14 - I1541 - SEND A BYTE TO A DEVICE
	AX = 400Ah
	BL = byte to send
	CL = last-byte flag
	    00h more bytes follow
	    01h this is the last byte to be sent
Return: CF clear if successful
	CF set on error
	    AL = error number (see #00354)
SeeAlso: AX=4000h,AX=400Bh
--------t-14400B-----------------------------
INT 14 - I1541 - RECEIVE A BYTE FROM A DEVICE
	AX = 400Bh
Return: CF clear if successful
	    AL = byte received
	    CL = last-byte flag
		00h more bytes to follow
		01h received byte is the last
	CF set on error
	    AL = error number
		80h EOI response required
		81h talker not ready
		82h clock not set
		83h clock not released
	    CL = 00h
SeeAlso: AX=4000h,AX=400Ah
--------t-14400C-----------------------------
INT 14 - I1541 - WAIT
	AX = 400Ch
	CX = number of 838ns microticks to wait (0000h means 65536, ~55ms)
Return: after wait period elapses
SeeAlso: AX=4000h,AX=400Dh
--------t-14400D-----------------------------
INT 14 - I1541 - LONGWAIT
	AX = 400Dh
	DX:CX = number of 838ns microticks to wait
	     (0000h:0000h means 4294967296, about one hour)
Example: To wait 1s you must set DX:CX=(1s/838ns)=1193180
SeeAlso: AX=4000h,AX=400Ch
--------t-14400E-----------------------------
INT 14 - I1541 - GET INFO
	AX = 400Eh
Return: AX = LPT port I/O address in use (0000h if no cable in use)
	BL = LPT number (1..3) in use (00h if no cable in use)
	CF set if the cable is auto-detectable
	CF clear if cable could not be auto-detected or is not present
SeeAlso: AX=4000h
--------S-1456-------------------------------
INT 14 U - BWCOM14 - INSTALLATION CHECK
	AH = 56h
Return: CX = 0001h if installed
Program: BWCOM14 is a network serial port emulator (simulating a Hayes modem
	  connected to the serial port) distributed as part of the
	  Beame&Whiteside BW-NFS package
SeeAlso: AH=57h,AH=58h,INT 2F/AX=DF00h/BX=5445h
--------S-1457-------------------------------
INT 14 U - BWCOM14 - INITIALIZE
	AH = 57h
	DL = port number
Return: AL = initialization status (00h successful, 01h already initialized)
	CX = port status (0001h port redirected, 0002h and FFFFh failed)
Note:	after this call, all invocations of INT 14/AH=00h-03h for the specified
	  port will be handled by BWCOM14 until AH=58h is called
SeeAlso: AH=00h"SERIAL",AH=56h,AH=58h
--------S-1458-------------------------------
INT 14 U - BWCOM14 - SHUTDOWN
	AH = 58h
Return: CX = status (0001h successful, 0002h not initialized)
Note:	after this call, BWCOM14 will no longer redirect the COM port
SeeAlso: AH=56h,AH=57h
--------N-146F--BXFFFE-----------------------
INT 14 U - Connection Manager - ???
	AH = 6Fh
	BX = FFFEh
	???
Return: ???
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
	  serial ports over an IPX or NetBIOS-based network
--------N-146F--BXFFFF-----------------------
INT 14 - Connection Manager - INSTALLATION CHECK
	AH = 6Fh
	BX = FFFFh
Return: DX:BX -> Connection Manager Communication Table if installed
	BX = FFFFh if not installed
SeeAlso: AH=0Dh/DX=FFFFh
--------S-146F00-----------------------------
INT 14 - HP Vectra EX-BIOS - "F14_INQUIRE" - INSTALLATION CHECK
	AX = 6F00h
	BX <> 4850h (usually set to 0000h for simplicity)
Return: BX = 4850h ("HP") if HP Extended BIOS serial port extensions available
	AX destroyed
Note:	supported by original HP Vectra AT and by ES/QS/RS series Vectras
SeeAlso: AX=6F01h,AX=6F02h,AX=6F03h,AX=6F04h,INT 10/AX=6F00h,INT 14/AX=6F00h
SeeAlso: INT 17/AX=6F00h,INT 33/AX=6F00h
--------S-146F01-----------------------------
INT 14 - HP Vectra EX-BIOS - "F14_EXINIT" - INITIALIZE SERIAL PORT
	AX = 6F01h
	BX = port attributes (see #00356)
	DX = port number (0-3)
Return: AH = line status (see #00304)
	AL = modem status (see #00305)
Note:	supported by original HP Vectra AT and by ES/QS/RS series Vectras
SeeAlso: AX=6F00h

Bitfields for HP Vectra Extended BIOS serial port attributes:
Bit(s)	Description	(Table 00356)
 8-5	data rate (110, 150, 300, 600, 1200, 2400, 4800, 9600, 19200)
 4-3	parity
	00 none
	01 odd
	10 none
	11 even
 2	stop bits (0 = one, 1 = two)
 1-0	bits per character
	10 seven-bit characters
	11 eight-bit characters
	0x undefined
--------S-146F02-----------------------------
INT 14 - HP Vectra EX-BIOS - "F14_PUT_BUFFER" - TRANSMIT BUFFER
	AX = 6F02h
	CX = number of characters in buffer
	DX = port number (0-3)
	ES:DI -> buffer containing characters
Return: AH = line status (see #00304)
	AL = modem status (see #00305)
	CX = number of bytes actually sent
	ES:DI -> next byte to be transferred (unchanged if all bytes sent)
Desc:	send characters from the specified buffer until all characters have
	  been sent or an error/timeout is encountered
Note:	supported by original HP Vectra AT and by ES/QS/RS series Vectras
SeeAlso: AX=6F00h,AX=6F03h,AX=6F04h,INT 17/AX=6F02h
--------S-146F03-----------------------------
INT 14 - HP Vectra EX-BIOS - "F14_GET_BUFFER" - READ DATA INTO BUFFER
	AX = 6F03h
	CX = size of buffer
	DX = port number (0-3)
	ES:DI -> buffer for received characters
Return: AH = line status (see #00304)
	---on error (AH bit 7 set)---
	   AL = 00h
	   ES:DI -> next byte to be transferred
	---if successful---
	   AL = last byte read
	   ES:DI unchanged
	CX = number of bytes read
Desc:	read characters into the specified buffer until the buffer is filled
	  or a timeout occurs
Notes:	supported by original HP Vectra AT and by ES/QS/RS series Vectras
	polls the Data Set Ready modem status and Data Ready line status bits
	  to determine when characters are available
SeeAlso: AX=6F00h,AX=6F02h,AX=6F04h
--------S-146F04-----------------------------
INT 14 - HP Vectra EX-BIOS - "F14_TRM_BUFFER" - READ UNTIL TERMINATOR
	AX = 6F04h
	BL = lowest termination character
	BH = highest termination character
	CX = size of buffer
	DX = port number (0-3)
	ES:DI -> buffer for received characters
Return: AH = line status (see #00304)
	---on error (AH bit 7 set)---
	   AL = 00h
	   ES:DI -> next byte to be transferred
	---if successful---
	   AL = last byte read
	   ES:DI unchanged
	CX = number of bytes read
Desc:	read characters into the specified buffer until the buffer is filled,
	  a character in the specified range is received, or a timeout occurs
Notes:	supported by original HP Vectra AT and by ES/QS/RS series Vectras
	polls the Data Set Ready modem status and Data Ready line status bits
	  to determine when characters are available
SeeAlso: AX=6F00h,AX=6F02h,AX=6F03h
--------U-147000-----------------------------
INT 14 - NEWCOM - INSTALLATION CHECK
	AX = 7000h
Return: AX = 4E43h ('NC') if installed
	BX = 4F4Dh ('OM') if installed
	    CH = major version number
	    CL = minor version number
	    DH = patch level
	    DL = language (currently: 00h English, 01h French)
Program: Newcom is a DOS commandline-enhancer by kilobug@kali.isicom.fr
SeeAlso: INT 2F/AX=D44Dh
--------S-147E-------------------------------
INT 14 - FOSSIL - INSTALL AN EXTERNAL APPLICATION FUNCTION
	AH = 7Eh
	AL = code assigned to external application (80h-BFh)
	    80h reserved for communications FOSSIL
	    81h video FOSSIL
	    82h reserved for keyboard FOSSIL
	    83h reserved for system FOSSIL
	ES:DX -> entry point
Return: AX = 1954h
	BL = code assigned to application (same as input AL)
	DH = status
	    00h failed
	    01h successful
SeeAlso: AH=7Fh,AH=80h"FOSSIL",AX=8100h,AH=82h"FOSSIL",AH=83h"FOSSIL"
--------S-147F-------------------------------
INT 14 - FOSSIL - REMOVE AN EXTERNAL APPLICATION FUNCTION
	AH = 7Fh
	AL = code assigned to external application
	ES:DX -> entry point
Return: AX = 1954h
	BL = code assigned to application (same as input AL)
	DH = status
	    00h failed
	    01h successful
SeeAlso: AH=7Eh
--------S-1480-------------------------------
INT 14 - COMMUNICATIONS FOSSIL
	AH = 80h
SeeAlso: AH=7Eh
--------S-1480-------------------------------
INT 14 - COURIERS.COM - INSTALLATION CHECK
	AH = 80h
Return: AH = E8h if loaded
Program: COURIERS is a TSR utility by PC Magazine
--------S-148000-----------------------------
INT 14 - ARTICOM - INSTALLATION CHECK
	AX = 8000h
Return: AL = FFh if installed
	    BH = major version
	    BL = minor version
Program: ArtiCom is an asynchronous communications driver by Artisoft which
	  works on top of NetBIOS and allows modem/serial-port sharing by
	  programs using INT 14 for serial I/O.
Note:	ArtiCom supports 32 simultaneous COM ports using multiport cards and
	  drivers
SeeAlso: AH=00h"SERIAL",AH=01h,AH=02h,AH=03h,AH=04h"SERIAL",AH=05h"SERIAL"
SeeAlso: AX=8001h,AX=8002h
--------S-148000-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET ERROR CODE AND BUFFER STATUS
	AX = 8000h
	DX = port number
Return: AX = code for last error (see #00357)
	BX = number of characters in output buffer
	CX = nubmer of characters in input buffer
	DX = state flag (see #00358)
Program: COMM-DRV is a universal serial communications driver by Willies'
	  Computer Software Company, which supports standard INT 14 and
	  FOSSIL calls as well as its own interfaces
SeeAlso: AX=8001h"COMM-DRV",AX=8002h"COMM-DRV",AX=8003h"COMM-DRV"

(Table 00357)
Values for COMM-DRV error code:
 00h	no error
 01h	buffer not set or attempted to change buffer for active port
 02h	port not active
 03h	transmit buffer full
 04h	receive buffer full
 05h	syntax error
 06h	invalid buffer size
 07h	invalid port
 08h	handler changed
 09h	invalid baud rate
 0Ah	invalid parity setting
 0Bh	invalid data length
 0Ch	invalid number of stop bits
 0Dh	invalid protocol number
 0Eh	IRQ changed
 0Fh	port changged
 10h	invalid threshold setting
 11h	invalid IRQ number
 12h	interrupts not enabled
 13h	invalid break syntax
 14h	fatal error
 15h	CTS error
 16h	invalid RS232 I/O port address
 17h	environment variable not set
 18h	error on IOCTL call
 19h	error during atexit cleanup
 1Ah	error mapping for direct calls
 1Bh	error opening device
 1Ch	unable to allocate memory
 1Dh	error on external micro card
 1Eh	card changed error
 1Fh	card type error
 20h	not supported
 21h	parent port error
 22h	card command buffer full
 23h	no subdevice for this port
 24h	unknown error
 25h	external card busy
 26h	no more timers available
 27h	INT 14 vector changed
 28h	INT 08 vector changed
 29h	DPMI error
 2Ah	TSR buffer too small (or nonexistent)
 2Bh	out of asynchronous resources
 2Ch	out of timer resources
 2Dh	out of "other" timer resources
 2Eh	file I/O error
 2Fh	hardware memory > 64K

Bitfields for state flag :
Bit(s)	Description	(Table 00358)
 0	port is active
 1	output throttled (XOFF received, or DSR or CTS reset)
 2	input throttled (XOFF sent, or DTR or RTS reset)
--------S-148001-----------------------------
INT 14 - ARTICOM - UNLOAD ASYNCHRONOUS REDIRECTOR FROM MEMORY
	AX = 8001h
Return: AX = error code, if error (see #00360)
SeeAlso: AX=8000h"ARTICOM",AX=8002h"ARTICOM",AX=8003h"ARTICOM"
Index:	uninstall;ARTICOM
--------S-148001-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET PORT PARAMETERS
	AX = 8001h
	DX = port number
Return: BX:DI -> Port Control Block (see #00367)
SeeAlso: AX=8000h"COMM-DRV",AX=8002h"COMM-DRV",AX=8003h"COMM-DRV"
--------S-148002-----------------------------
INT 14 - ARTICOM - GET ASYNCHRONOUS REDIRECTOR STATUS
	AX = 8002h
	ES:DI -> buffer for redirector status structure (see #00359)
Return: AX = error code, if error (see #00360)
SeeAlso: AX=8000h"ARTICOM",AX=8003h"ARTICOM"

Format of ARTICOM redirector status:
Offset	Size	Description	(Table 00359)
 00h	WORD	redirector major and minor version numbers
 02h	WORD	redirectable ports found
 04h	WORD	redirectable ports + local ports found
 06h	WORD	redirector internal buffer size
 08h	WORD	maximum servers maintained
 0Ah	WORD	number of adapters found
--------S-148002-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET PORT PARAMETERS
	AX = 8002h
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
	    BX:DI -> Port Control Block (see #00367) (modifyable portion only)
SeeAlso: AX=8000h"COMM-DRV",AX=8001h"COMM-DRV",AX=8003h"COMM-DRV"
--------S-148003-----------------------------
INT 14 - ARTICOM - TRANSLATE ERROR CODE TO ERROR STRING
	AX = 8003h
	CX = error number to translate (see #00360)
Return: ES:DI -> ASCIZ error text or 0000h:0000h if unable to translate
SeeAlso: AX=8000h

(Table 00360)
Values for ARTICOM error codes:
 00h	"No error"
 01h	"An invalid port number was specified"
 02h	"Port is already redirected"
 03h	"Too many ports redirected"
 04h	"Cannot locate the server"
 05h	"Server is busy"
 06h	"Access denied"
 07h	"Resource in use"
 08h	"Resource in use - request queued"
 09h	"No such resource"
 0Ah	"Invalid username/password pair"
 0Bh	"Noncompatible version number"
 0Ch	"Can't remove from memory"
 0Dh	"Bad NETBIOS adapter number"
 0Eh	"No more entries in list"
 0Fh	"Resource is not available at this time"
 10h	"Invalid value to INT 14 call"
--------S-148003-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET I/O BUFFER SIZES
	AX = 8003h
	DX = port number
Return: AX = number of characters in input buffer
	BX = input buffer size
	CX = number of characters in output buffer
	DX = output buffer size
SeeAlso: AX=8000h"COMM-DRV",AX=8001h"COMM-DRV",AX=8002h"COMM-DRV"
--------S-148004-----------------------------
INT 14 - ARTICOM - ATTACH ASYNCHRONOUS RESOURCE
	AX = 8004h
	DX = port to redirect (COM1=0, COM2=1, ...)
	CH = attach type
	CL = adapter to use for attach, 0FFh to search all
	ES:DI -> attachment structure (see #00361)
Return: AX = error code, if error (see #00360)
Note:	The wildcard '*' is supported in the server and resource fields.  If
	  wild cards are used then the first matching available server is
	  attached.
SeeAlso: AX=8000h,AX=8003h,AX=8005h

Format of ARTICOM attachment structure:
Offset	Size	Description	(Table 00361)
 00h 16 BYTEs	server to look for attach
 10h 16 BYTEs	attach to resource name
 20h 16 BYTEs	username for attach
 30h 16 BYTEs	password for username or resource
 40h	BYTE	attach type
		00h normal
		01h queue if resource is in use (not yet supported in v1.00)
--------S-148005-----------------------------
INT 14 - ARTICOM - DETACH ASYNCHRONOUS RESOURCE
	AX = 8005h
	DX = port to detach (COM1=0, COM2=1, ...)
Return: AX = error code, if error (see #00360)
Note:	only a previously attached resource can be detached
SeeAlso: AX=8000h,AX=8003h,AX=8004h
--------S-148006-----------------------------
INT 14 - ARTICOM - GET RESOURCE INFORMATION
	AX = 8006h
	BX = remote port (COM1=0, COM2=1, ...)
	CL = adapter number, FFh to try all adapters
	ES:DI -> resource information structure (see #00362)
	DS:SI -> 16 byte server name. See note.
Return: AX = error code, if error (see #00360)
	BX = next remote port, recall to get next resource info
Note:	Wild cards supported in both the resource field and server name
	  string DS:SI. If wild cards used then first matching available
	  resource information is searched. Set the resource field to FFh to
	  return all resources.
SeeAlso: AX=8000h,AX=8002h,AX=8003h,AX=8007h

Format of ARTICOM resource information structure:
Offset	Size	Description	(Table 00362)
 00h	BYTE	00h = free, else used
 01h 16 BYTEs	resource name
 11h 16 BYTEs	username of resource user
 21h	WORD	amount of time used
 23h	WORD	amount of time remaining
 53h 48 BYTEs	description of resource
 93h 64 BYTEs	initialization string for modem
 B3h 32 BYTEs	dial string for modem
 D3h 32 BYTEs	hang-up string for modem
--------S-148007-----------------------------
INT 14 - ARTICOM - GET REDIRECTED PORT INFORMATION
	AX = 8007h
	DX = port index (COM1=0, COM2=1, ...)
	ES:DI -> buffer for port information structure (see #00363)
Return: CF clear if redirection info returned and port is redirected
	CF set if not a redirected port
	AX = error code, if error (see #00360)
SeeAlso: AX=8000h,AX=8003h,AX=8006h,AX=8008h

Format of ARTICOM port information structure:
Offset	Size	Description	(Table 00363)
 00h 16 BYTEs	server name resource is on
 10h	BYTE	adapter number server is on
 11h 16 BYTEs	resource name
 21h	WORD	remote port index, use to get additional information
 23h	WORD	buffer size
 25h	WORD	baud rate (see #00364)
 26h	BYTE	modem status register
 27h	BYTE	modem control register
 28h	BYTE	line status register
 29h	BYTE	line control register
 2Ah	BYTE	flow control in use: 0 - NONE, 1 - XON/XOFF, 2 - RTS/CTS
 2Bh	WORD	send timeout in ticks
 2Dh	WORD	receive timeout in ticks
 2Fh	WORD	time used on remote port
 31h	WORD	time left before timeout
 33h	BYTE	if server changes allowed?
 34h	WORD	FFFFh (-1) if connection ok, else old port index

(Table 00364)
Values for ARTICOM baud rate:
 00h	110
 01h	150
 02h	300
 03h	600
 04h	1200
 05h	2400
 06h	4800
 07h	9600
 08h	19200
 09h	38400
 0Ah	57600
 0Bh	115200
 0Ch	134.5
 0Dh	1800
 0Eh	2000
 0Fh	3600
 10h	7200
SeeAlso: #00309
--------S-148008-----------------------------
INT 14 - ARTICOM - GET AVAILABLE SERVER NAME
	AX = 8008h
	BX = server index (0,1,...)
	ES:DI -> server name structure (see #00365)
Return: AX = error code, if error (see #00360)
	BX = next remote port, repeat call to get next available server
Note:	the wildcard '*' is supported in the server name field.	 Set the
	  server name to FFh to search for all servers.
SeeAlso: AX=8000h,AX=8003h,AX=8007h

Format of ARTICOM server name structure:
Offset	 Size	  Description	(Table 00365)
  00h 16 BYTEs	  (call) ASCIZ server name
  10h	 BYTE	  (ret) the adapter server is found
--------S-148009-----------------------------
INT 14 - ARTICOM - SET SEND AND RECEIVE TIMEOUTS
	AX = 8009h
	BX = send timeout in ticks
	CX = receive timeout in ticks
	DX = port index (COM1=0, COM2=1, ...)
Return: nothing
SeeAlso: AX=8000h,AX=800Ah
--------S-14800A-----------------------------
INT 14 - ARTICOM - MODIFY FLOW CONTROL
	AX = 800Ah
	BL = flow control type (00h none, 01h XON/XOFF, 02h RTS/CTS)
	DX = port index (COM1=0, COM2=1, ...)
Return: AX = error code, if error (see #00360)
Note:	for attached ports only!
SeeAlso: AX=8000h,AX=8003h,AX=8009h
--------S-148025-----------------------------
INT 14 - ARTICOM - SET INTERNAL SEND/RECEIVE VECTOR
	AX = 8025h
	DS:DX -> address of trap function (see #00366) to call on read/write
Return: nothing
Note:	setting the vector to a user function allows the redirector's activity
	  to be monitored.
SeeAlso: AX=8000h,AX=8035h,INT 21/AH=25h

(Table 00366)
Values ARTICOM trap function is called with:
	AH = operation
	    80h reading character
	    81h writing character
	AL = character
Return: AX must be preserved
	far JUMP to old trap function (see AX=8035h)
--------S-148035-----------------------------
INT 14 - ARTICOM - GET INTERNAL SEND/RECEIVE VECTOR
	AX = 8035h
Return: ES:BX -> address of current send/receive routine
Note:	this function returns the address of the routine which is called
	  inside A-REDIR.EXE each time a character is received or sent on the
	  active COM port.
SeeAlso: AX=8000h,AX=8025h,INT 21/AH=35h
--------S-1481-------------------------------
INT 14 - COURIERS.COM - CHECK IF PORT BUSY
	AH = 81h
	AL = port number (1-4)
Return: AH = status
	    00h port available
	    01h port exists but already in use
	    02h port nonexistent
Program: COURIERS is a TSR utility by PC Magazine
SeeAlso: AH=83h,AH=8Dh
--------S-1481-------------------------------
INT 14 - COMM-DRV - EXTENDED INITIALIZATION
	AH = 81h
	BX:DI -> port control block (see #00367)
	DX = port number
Return: AH = line status register (see #00304)
	    error if bit 7 set
	AL = modem status register (see #00305)
Program: COMM-DRV is a universal serial communications driver by Willies'
	  Computer Software Company, which supports standard INT 14 and
	  FOSSIL calls as well as its own interfaces
Note:	AX=8001h should be called first to fill in the port control block
SeeAlso: AH=00h,AX=8001h,AH=82h"COMM-DRV",AH=86h"COMM-DRV"

Format of COMM-DRV port control block:
Offset	Type	Description	(Table 00367)
 00h	WORD	port IO address
 02h	WORD	port IRQ
 04h	WORD	baud rate
 06h	WORD	parity
 08h	WORD	data bits
 0Ah	WORD	stop bits
 0Ch	WORD	break status (0000h off)
 0Eh	WORD	flow control protocol
 10h	BYTE	input block
 11h	BYTE	output block
 12h	WORD	low threshold
 14h	WORD	high threshold
 16h	WORD	segment of buffer
 18h	WORD	offset of buffer
 1Ah	WORD	input buffer length
 1Ch	WORD	output buffer length
 1Eh	BYTE	auxiliary address
 1Fh	BYTE	spare
 20h  4 WORDs	spares
--------V-148100-----------------------------
INT 14 - VIDEO FOSSIL - RETURN VFOSSIL INFORMATION
	AX = 8100h
	ES:DI -> buffer for VFOSSIL information (see #00368)
Return: AX = 1954h if installed
SeeAlso: AH=7Eh,AX=8101h

Format of VFOSSIL information:
Offset	Size	Description	(Table 00368)
 00h	WORD	size of information in bytes, including this field
 02h	WORD	VFOSSIL major version
 04h	WORD	VFOSSIL revision level
 06h	WORD	highest VFOSSIL application function supported
--------V-148101-----------------------------
INT 14 - VIDEO FOSSIL - OPEN VFOSSIL
	AX = 8101h
	ES:DI -> buffer for application function table (see #00369)
	CX = length of buffer in bytes
Return: AX = 1954h if installed
	    BH = highest VFOSSIL application function supported
Note:	the number of initialized pointers in the application function table
	  will never exceed CX/4; if the buffer is large enough, BH+1 pointers
	  will be initialized
SeeAlso: AX=8102h

Format of VFOSSIL application function table:
Offset	Size	Description	(Table 00369)
 00h	DWORD	-> function to query current video mode (VioGetMode)(see #00374)
 04h	DWORD	-> function to set video mode (VioSetMode) (see #00375)
 08h	DWORD	-> function to query hardware config (VioGetConfig) (see #00376)
 0Ch	DWORD	-> function to write data in TTY mode (VioWrtTTY) (see #00377)
 10h	DWORD	-> function to get current ANSI state (VioGetANSI) (see #00378)
 14h	DWORD	-> function to set new ANSI state (VioSetANSI) (see #00379)
 18h	DWORD	-> function to get curr cursor position (VioGetCurPos)
		  (see #00380)
 1Ch	DWORD	-> function to set cursor position (VioSetCurPos) (see #00381)
 20h	DWORD	-> function to get cursor shape (VioGetCurType) (see #00382)
 24h	DWORD	-> function to set cursor shape (VioSetCurType) (see #00383)
 28h	DWORD	-> function to scroll screen up (VioScrollUp) (see #00384)
 2Ch	DWORD	-> function to scroll screen down (VioScrollDn) (see #00385)
 30h	DWORD	-> function to read cell string from screen (VioReadCellStr)
		  (see #00386)
 34h	DWORD	-> function to read char string from screen (VioReadCharStr)
		  (see #00387)
 38h	DWORD	-> function to write a cell string (VioWrtCellStr)
		  (see #00388)
 3Ch	DWORD	-> function to write char string, leaving attr (VioWrtCharStr)
		  (see #00389)
 40h	DWORD	-> function to write char string,const attr (VioWrtCharStrAttr)
		  (see #00390)
 44h	DWORD	-> function to replicate an attribute (VioWrtNAttr)
		  (see #00391)
 48h	DWORD	-> function to replicate a cell (VioWrtNCell)
		  (see #00392)
 4Ch	DWORD	-> function to replicate a character (VioWrtNChar)
		  (see #00393)

Format of VFOSSIL video mode data structure:
Offset	Size	Description	(Table 00370)
 00h	WORD	length of structure including this field
 02h	BYTE	mode characteristics
		bit 0: clear if MDA, set otherwise
		bit 1: graphics mode
		bit 2: color disabled (black-and-white)
 03h	BYTE	number of colors supported (1=2 colors, 4=16 colors, etc)
 04h	WORD	number of text columns
 06h	WORD	number of text rows
 08h	WORD	reserved
 0Ah	WORD	reserved
 0Ch	DWORD	reserved
SeeAlso: #00374,#00375

Format of VFOSSIL video configuration data:
Offset	Size	Description	(Table 00371)
 00h	WORD	structure length including this field
 02h	WORD	adapter type
		00h monochrome/printer
		01h CGA
		02h EGA
		03h VGA
		07h 8514/A
 04h	WORD	display type
		00h monochrome
		01h color
		02h enhanced color
		09h 8514
 06h	DWORD	adapter memory size
SeeAlso: #00376

Format of VFOSSIL cursor type record:
Offset	Size	Description	(Table 00372)
 00h	WORD	cursor start line
 02h	WORD	cursor end line
 04h	WORD	cursor width (always 01h)
 06h	WORD	cursor attribute (FFFFh = hidden)

(Table 00373)
Values for VFOSSIL error code:
 0000h	successful
 0074h	internal VIO failure
 0163h	unsupported mode
 0166h	invalid row value
 0167h	invalid column value
 017Eh	buffer too small
 01A5h	invalid VIO parameter
 01B4h	invalid VIO handle

(Table 00374)
Call VioGetMode with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to video mode data structure (see #00370)
Return: AX = error code (00h, 74h, 17Eh, 1B4h) (see #00373)
SeeAlso: #00375

(Table 00375)
Call VioSetMode with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to video mode data structure (see #00370)
Return: AX = error code (00h, 74h, 163h, 17Eh, 1A5h, 1B4h) (see #00373)
SeeAlso: #00374

(Table 00376)
Call VioGetConfig with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to video configuration data buffer (see #00371)
Return: AX = error code (00h, 74h, 17Eh, 1B4h) (see #00373)

(Table 00377)
Call VioWrtTTY with:
	STACK:	WORD	VIO handle (must be 00h)
		WORD	length of string
		DWORD	pointer to character string to be written to screen
Return: AX = error code (00h, 74h, 1B4h) (see #00373)
Notes:	write wraps at end of line and terminates if it reaches end of screen
	in ANSI mode, ANSI control sequences are interpreted, and this func is
	  not required to be reentrant; in non-ANSI mode, the function is
	  reentrant and may be called from within an MS-DOS function call

(Table 00378)
Call VioGetANSI with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to WORD which will be set to 00h if ANSI is off
			or 01h if ANSI is on
Return: AX = error code (00h, 74h, 1B4h) (see #00373)
SeeAlso: #00379

(Table 00379)
Call VioSetANSI with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to WORD indicating new state of ANSI
			00h off, 01h on
Return: AX = error code (00h, 74h, 1A4h, 1B4h) (see #00373)
SeeAlso: #00378

(Table 00380)
Call VioGetCurPos with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to WORD to hold current cursor column (0-based)
		DWORD	pointer to WORD to hold current cursor row (0-based)
Return: AX = error code (00h, 74h, 1B4h) (see #00373)
SeeAlso: #00381

(Table 00381)
Call VioSetCurPos with:
	STACK:	WORD	VIO handle (must be 00h)
		WORD	cursor column
		WORD	cursor row
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
Note:	if either coordinate is invalid, the cursor is not moved
SeeAlso: #00380

(Table 00382)
Call VioGetCurType with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to cursor type record (see #00372)
Return: AX = error code (00h, 74h, 1B4h) (see #00373)
SeeAlso: #00383

(Table 00383)
Call VioSetCurType with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to cursor type record (see #00372)
Return: AX = error code (00h, 74h, 1A4h, 1B4h) (see #00373)
SeeAlso: #00384

(Table 00384)
Call VioScrollUp with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to char/attr cell for filling emptied rows
		WORD	number or rows to scroll (FFFFh = clear area)
		WORD	right column of scroll area
		WORD	bottom row of scroll area
		WORD	left column of scroll area
		WORD	top row of scroll area
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
SeeAlso: #00385,INT 10/AH=06h

(Table 00385)
Call VioScrollDn with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to char/attr cell for filling emptied rows
		WORD	number or rows to scroll (FFFFh = clear area)
		WORD	right column of scroll area
		WORD	bottom row of scroll area
		WORD	left column of scroll area
		WORD	top row of scroll area
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
SeeAlso: #00384,INT 10/AH=07h

(Table 00386)
Call VioReadCellStr with:
	STACK:	WORD	VIO handle (must be 00h)
		WORD	column at which to start reading
		WORD	row at which to start reading
		DWORD	pointer to WORD containing length of buffer in bytes
			on return, WORD contains number of bytes actually read
		DWORD	pointer to buffer for cell string
Return: AX = error code (00h, 74h, 166h ,167h, 1B4h) (see #00373)

(Table 00387)
Call VioReadCharStr with:
	STACK:	WORD	VIO handle (must be 00h)
		WORD	column at which to start reading
		WORD	row at which to start reading
		DWORD	pointer to WORD containing length of buffer in bytes
			on return, WORD contains number of bytes actually read
		DWORD	pointer to buffer for character string
Return: AX = error code (00h, 74h, 166h ,167h, 1B4h) (see #00373)

(Table 00388)
Call VioWrtCellStr with:
	STACK:	WORD	VIO handle (must be 00h)
		WORD	column at which to start writing
		WORD	row at which to start writing
		WORD	length of cell string in bytes
		DWORD	pointer to cell string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
Note:	write wraps at end of line and terminates if it reaches end of screen

(Table 00389)
Call VioWrtCharStr with:
	STACK:	WORD	VIO handle (must be 00h)
		WORD	column at which to start writing
		WORD	row at which to start writing
		WORD	length of character string
		DWORD	pointer to character string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
Note:	write wraps at end of line and terminates if it reaches end of screen

(Table 00390)
Call VioWrtCharStrAttr with:
	STACK:	WORD	VIO handle (must be 00h)
		DWORD	pointer to attribute to be applied to each character
		WORD	column at which to start writing
		WORD	row at which to start writing
		WORD	length of character string
		DWORD	pointer to character string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
Note:	write wraps at end of line and terminates if it reaches end of screen

(Table 00391)
Call VioWrtNAttr with:
	STACK:	WORD	VIO handle (must be 00h)
		WORD	column at which to start writing
		WORD	row at which to start writing
		WORD	number of times to write attribute
		DWORD	pointer to display attribute to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
Note:	write wraps at end of line and terminates if it reaches end of screen

(Table 00392)
Call VioWrtNCell with:
	STACK:	WORD	VIO handle (must be 00h)
		WORD	column at which to start writing
		WORD	row at which to start writing
		WORD	number of times to write cell
		DWORD	pointer to cell to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
Note:	write wraps at end of line and terminates if it reaches end of screen

(Table 00393)
Call VioWrtNChar with:
	STACK:	WORD	VIO handle (must be 00h)
		WORD	column at which to start writing
		WORD	row at which to start writing
		WORD	number of times to write character
		DWORD	pointer to character to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #00373)
Note:	write wraps at end of line and terminates if it reaches end of screen
--------V-148102-----------------------------
INT 14 - VIDEO FOSSIL - CLOSE VFOSSIL
	AX = 8102h
Return: AX = 1954h
Note:	terminates all operations; after this call, the video FOSSIL may either
	  be removed from memory or reinitialized
SeeAlso: AX=8101h,AX=8103h
--------V-148103-----------------------------
INT 14 - VIDEO FOSSIL - UNINSTALL
	AX = 8103h
Return: AX = 1954h
Note:	this is an extension to the VFOSSIL spec by Bob Hartman's VFOS_IBM
--------K-1482-------------------------------
INT 14 - KEYBOARD FOSSIL
	AH = 82h
SeeAlso: AH=7Eh
--------S-1482-------------------------------
INT 14 - COURIERS.COM - CONFIGURE PORT
	AH = 82h
	AL = port number (1-4)
	BX = speed (bps)
	CX = bit flags
	    bit 0: enable input flow control
	    bit 1: enable output flow control
	    bit 2: use X.PC protocol (not yet implemented)
Return: nothing
SeeAlso: AH=00h,AH=8Ch,INT 7A"X.PC"
--------S-1482-------------------------------
INT 14 - COMM-DRV v14.0 - PORT CLEANUP
	AH = 82h
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
Desc:	reset the port to its state before the AH=81h initialization and unhook
	  any interrupts used by the port
SeeAlso: AH=81h"COMM-DRV",AH=83h"COMM-DRV"
----------1483-------------------------------
INT 14 - SYSTEM FOSSIL
	AH = 83h
SeeAlso: AH=7Eh
--------S-1483-------------------------------
INT 14 - COURIERS.COM - START INPUT
	AH = 83h
	ES:BX -> circular input buffer
	CX = length of buffer
		(should be at least 128 bytes if input flow control enabled)
Return: nothing
SeeAlso: AH=18h,AH=87h,AH=8Dh,AH=A5h"BAPI"
--------S-1483-------------------------------
INT 14 - COMM-DRV v14.0 - FLUSH COMMUNICATION BUFFERS
	AH = 83h
	DX = port number
	AL = subfunction
	    00h flush input buffer
	    01h flush output buffer
	    02h flush both buffers
Return: AH bit 7 set on error
	AH bit 7 clear if successful
SeeAlso: AH=81h"COMM-DRV",AH=84h"COMM-DRV"
--------S-1484-------------------------------
INT 14 - COURIERS.COM - READ CHARACTER
	AH = 84h
Return: ZF set if no characters available
	ZF clear
	   AL = character
	   AH = modem status bits
		bit 7: set on input buffer overflow
SeeAlso: AH=02h,AH=86h,AH=89h
--------S-1484-------------------------------
INT 14 - COMM-DRV v14.0 - SEND PACKET
	AH = 84h
	CX = packet length in bytes
	DX = port number
	ES:DI -> packet to be sent
Return: AH = line status (see #00304)
	    bit 7 set on error
	AL destroyed
SeeAlso: AH=83h"COMM-DRV",AH=85h"COMM-DRV",AH=86h"COMM-DRV"
--------S-1485-------------------------------
INT 14 - COURIERS.COM - FLUSH PENDING INPUT
	AH = 85h
Return: nothing
SeeAlso: AH=0Ah,AH=88h"COURIERS"
--------S-1485-------------------------------
INT 14 - COMM-DRV v14.0 - RECEIVE PACKET
	AH = 85h
	CX = length of packet in bytes
	DX = port number
	ES:DI -> buffer for packet
Return: AH = line status (see #00304)
	    bit 7 set on error
	AL destroyed
Note:	this call requires that at least the requested number of bytes are
	  already present in the input buffer, and will fail if there are
	  fewer bytes available
SeeAlso: AH=84h"COMM-DRV",AH=86h"COMM-DRV",AH=8Eh"COMM-DRV"
--------S-1486-------------------------------
INT 14 - COURIERS.COM - START OUTPUT
	AH = 86h
	ES:BX -> output buffer
	CX = length of output buffer
Return: nothing
SeeAlso: AH=19h,AH=83h"COURIERS",AH=A4h"BAPI"
--------S-1486-------------------------------
INT 14 - COMM-DRV v14.0 - SET INPUT/OUTPUT TIMEOUTS
	AH = 86h
	BL = maximum clock ticks to wait before signalling error on input func
	BH = maximum clock ticks to wait before signalling error on output
	DX = port number
	SI = input timeout in clock ticks if BL=FFh and BH=FFh
	DI = output timeout in clock ticks if BL=FFh and BH=FFh
Return: AH bit 7 set on error
	AH bit 7 clear if successful
Note:	functions 02h, 85h, and 8Eh will wait for the input timeout before
	  returning an error when no data is available; functions 01h and 84h
	  will wait for the output timeout before returning an error if there
	  is no space to output the data
SeeAlso: AH=01h,AH=02h,AH=84h"COMM-DRV",AH=85h"COMM-DRV",AH=8Eh"COMM-DRV"
--------S-1487-------------------------------
INT 14 - COURIERS.COM - OUTPUT STATUS
	AH = 87h
Return: AX = number of unsent characters
SeeAlso: AH=88h"COURIERS"
--------S-1487-------------------------------
INT 14 - COMM-DRV v14.0 - TURN ON DTR
	AH = 87h
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
SeeAlso: AX=8000h"COMM-DRV",AH=88h"COMM-DRV",AH=89h"COMM-DRV"
--------S-1488-------------------------------
INT 14 - COURIERS.COM - ABORT OUTPUT
	AH = 88h
SeeAlso: AH=09h"FOSSIL",AH=85h"COURIERS"
--------S-1488-------------------------------
INT 14 - COMM-DRV v14.0 - TURN OFF DTR
	AH = 88h
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
Program: COMM-DRV is a universal serial communications driver by Willies'
	  Computer Software Company, which supports standard INT 14 and
	  FOSSIL calls as well as its own interfaces
SeeAlso: AX=8000h"COMM-DRV",AH=87h"COMM-DRV",AH=8Ah"COMM-DRV"
--------S-1489-------------------------------
INT 14 - COURIERS.COM - SEND SINGLE CHARACTER
	AH = 89h
	CL = character to send
Return: nothing
SeeAlso: AH=01h,AH=84h"COURIERS"
--------S-1489-------------------------------
INT 14 - COMM-DRV v14.0 - TURN ON RTS
	AH = 89h
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
SeeAlso: AX=8000h"COMM-DRV",AH=87h"COMM-DRV",AH=8Ah"COMM-DRV"
--------S-148A-------------------------------
INT 14 - COURIERS.COM - SEND BREAK
	AH = 8Ah
Return: nothing
SeeAlso: AH=89h"COURIERS",AH=FAh
--------S-148A-------------------------------
INT 14 - COMM-DRV v14.0 - TURN OFF RTS
	AH = 8Ah
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
SeeAlso: AX=8000h"COMM-DRV",AH=88h"COMM-DRV",AH=89h"COMM-DRV"
--------S-148B-------------------------------
INT 14 - COMM-DRV v14.0 - SET USER INTERRUPT ROUTINE
	AH = 8Bh
	CX = bitmask of interrupt to process
	    00h = deinstall
	BX:DI -> DWORD containing address of function to be called
Return: AH bit 7 clear if successful
	AH bit 7 set on error
--------S-148C-------------------------------
INT 14 - COURIERS.COM - SET SPEED
	AH = 8Ch
	BX = speed in bps
Return: nothing
SeeAlso: AH=00h,AH=82h"COURIERS"
--------S-148C-------------------------------
INT 14 - COMM-DRV v14.0 - READ UART REGISTER
	AH = 8Ch
	AL = register offset
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
	    AL = contents of UART register
SeeAlso: AH=8Dh"COMM-DRV"
--------S-148D-------------------------------
INT 14 - COURIERS.COM - DECONFIGURE PORT
	AH = 8Dh
Return: nothing
SeeAlso: AH=82h"COURIERS"
--------S-148D-------------------------------
INT 14 - COMM-DRV v14.0 - WRITE UART REGISTER
	AH = 8Dh
	AL = register offset
	BL = new value for UART register
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
SeeAlso: AH=8Ch"COMM-DRV"
--------S-148E-------------------------------
INT 14 - COMM-DRV v14.0 - READ PACKET NONDESTRUCTIVELY
	AH = 8Eh
	CX = length of packet in bytes
	DX = port number
	ES:DI -> buffer for packet
Return: AH = line status (see #00304)
	    bit 7 set on error (see AX=8000h"COMM-DRV")
	AL destroyed
Program: COMM-DRV is a universal serial communications driver by Willies'
	  Computer Software Company, which supports standard INT 14 and
	  FOSSIL calls as well as its own interfaces
Desc:	retrieve a packet from the input buffer without removing it from the
	  buffer
Note:	this call requires that at least the requested number of bytes are
	  already present in the input buffer, and will fail if there are
	  fewer bytes available
SeeAlso: AX=8000h"COMM-DRV",AH=84h"COMM-DRV",AH=85h"COMM-DRV",AH=86h"COMM-DRV"
--------S-14A0-------------------------------
INT 14 - 3com BAPI SERIAL I/O - CONNECT TO PORT
	AH = A0h
	ES:BX -> ASCIZ internet host name
	CX = length of name
Return: AH = return code (00h,04h-06h,08h,0Ah-0Ch) (see #00394)
	CL = session ID
Program: the Bridge Application Program Interface is a set of functions which
	  makes many of the details of LAN communications transparent
Note:	Novell TELAPI.EXE returns AH=09h (not supported) and CL=00h
SeeAlso: AH=A1h"BAPI",AH=A2h"BAPI",AH=A5h"BAPI",AX=AF00h

(Table 00394)
Values for 3com BAPI return code:
 00h	successful
 01h	no characters written
 02h	no characters read
 03h	no such session
 04h	clearinghouse name not found
 05h	no response from host
 06h	no more sessions available
 07h	session aborted
 08h	invalid clearinghouse name
 09h	not supported
 0Ah	internal (general) network error
 0Bh	out of memory
 0Ch	invalid IP address
--------S-14A0--CXFFFF-----------------------
INT 14 - Interconnections Inc. TES - INSTALLATION CHECK/STATUS REPORT
	AH = A0h
	CX = FFFFh
Return: CF clear if successful
	    AX = 5445h ('TE')
	    CX <> FFFFh
	    DX = port number
	CF set on error
Program: TES is a network serial port emulation program
SeeAlso: AH=A1h"TES"
--------S-14A1-------------------------------
INT 14 - 3com BAPI SERIAL I/O - DISCONNECT FROM PORT
	AH = A1h
	DH = session ID (00h for external session managment)
Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #00394)
	AL destroyed (Novell TELAPI.EXE)
SeeAlso: AH=A0h"BAPI"
--------S-14A1-------------------------------
INT 14 - Interconnections Inc. TES - GET LIST OF SESSIONS WITH STATUS
	AH = A1h
Return: CX = number of active sessions
	ES:SI -> status array (see #00395)
SeeAlso: AH=A2h"TES",AH=A3h"TES"

Format of Interconnections TES status array entry:
Offset	Size	Description	(Table 00395)
 00h	BYTE	status
 01h	WORD	offset of name
--------S-14A2-------------------------------
INT 14 - 3com BAPI SERIAL I/O - WRITE CHARACTER
	AH = A2h
	AL = character
	DH = session ID (00h for external session managment)
Return: AH = return code (00h,01h,03h,07h,0Ah,0Bh) (see #00394)
SeeAlso: AH=A0h"BAPI",AH=A3h"BAPI",AH=A4h"BAPI"
--------S-14A2-------------------------------
INT 14 - Interconnections Inc. TES - GET LIST OF SERVER NAMES
	AH = A2h
Return: CX = number of servers
	ES:SI -> array of offsets from ES for server names
SeeAlso: AH=A1h"TES"
--------S-14A3-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ CHARACTER
	AH = A3h
	DH = session ID (00h for external session managment)
Return: AH = return code (00h,02h,03h,07h,0Ah,0Bh) (see #00394)
	AL = character read or 00h if none available
SeeAlso: AH=A0h"BAPI",AH=A2h"BAPI",AH=A5h"BAPI",AH=A7h"BAPI"
--------S-14A3-------------------------------
INT 14 - Interconnections Inc. TES - START A NEW SESSION
	AH = A3h
	ES:SI -> ???
Return: CF clear if successful
	    AX = 5445h ('TE')
	    CX <> FFFFh
	    DX = port number
	CF set on error
SeeAlso: AH=A1h"TES",AH=A4h"TES",AH=A6h"TES"
--------S-14A4-------------------------------
INT 14 - 3com BAPI SERIAL I/O - WRITE BLOCK
	AH = A4h
	CX = length of buffer in bytes
	DH = session ID (00h for external session managment)
	ES:BX -> buffer containing data
Return: AH = return code (00h,01h,03h,07h,0Ah,0Bh) (see #00394)
	CX = number of bytes actually sent
SeeAlso: AH=19h,AH=86h,AH=A0h"BAPI",AH=A5h"BAPI"
--------S-14A4-------------------------------
INT 14 - Interconnections Inc. TES - HOLD CURRENTLY ACTIVE SESSION
	AH = A4h
	???
Return: ???
SeeAlso: AH=A3h"TES",AH=A5h"TES"
--------S-14A5-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ BLOCK
	AH = A5h
	CX = length of buffer
	DH = session ID (00h for external session managment)
	ES:BX -> buffer for data
Return: AH = return code (00h,02h,03h,07h,0Ah,0Bh) (see #00394)
	CX = number of bytes actually read
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A0h"BAPI",AH=A3h"BAPI",AH=A4h"BAPI"
SeeAlso: AH=A7h"BAPI",AX=FF02h
--------S-14A5-------------------------------
INT 14 - Interconnections Inc. TES - RESUME A SESSION
	AH = A5h
	AL = session number
Return: ???
SeeAlso: AH=A4h"TES",AH=A6h"TES"
--------S-14A6-------------------------------
INT 14 - 3com BAPI SERIAL I/O - SEND SHORT BREAK
	AH = A6h
	DH = session ID (00h for external session managment)
Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #00394)
Desc:	generate a short break signal; if data delivery was turned off by the
	  break, wait for the host to turn it on again
SeeAlso: AH=1Ah,AH=8Ah,AH=FAh,AH=A0h"BAPI"
--------S-14A6-------------------------------
INT 14 - Interconnections Inc. TES - DROP A SESSION
	AH = A6h
	AL = session number
Return: AH = status
	    00h successful
	    else error
SeeAlso: AH=A3h"TES",AH=A5h"TES"
--------S-14A7-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ STATUS
	AH = A7h
	DH = session ID (00h for external session managment)
Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #00394)
	CX = number of bytes available for reading
Note:	Novell TELAPI.EXE v4.01 always returns either 0 or 1 bytes available
SeeAlso: AH=A5h"BAPI"
--------S-14A7-------------------------------
INT 14 - Interconnections Inc. TES - SWITCH TO NEXT ACTIVE SESSION
	AH = A7h
	???
Return: ???
SeeAlso: AH=A3h"TES",AH=A5h"TES"
--------S-14A8-------------------------------
INT 14 - Interconnections Inc. TES - SEND STRING TO COMMAND INTERPRETER
	AH = A8h
	AL = 00h no visible response
	ES:SI -> ASCIZ command
Return: ???
--------N-14A8-------------------------------
INT 14 - Novell TelAPI v4.01 - CONNECTION INFORMATION???
	AH = A8h
	DH = session ID???
	CH = subfunction
	    02h ???
	    0Dh ???
	    0Fh ???
	    10h ???
	    11h ???
	    28h ???
	    else
		Return: AH = 09h (not supported)
Return: AH = return code (see #00394)
	    00h successful
		CL = ??? (0/1/8) (subfunctions 02h,0Dh,0Fh,10h)
		CL = ??? (7Fh/FFh) (subfunction 28h)
		CX = ??? (subfunction 11h)
SeeAlso: AH=A9h"TelAPI"
--------N-14A9-------------------------------
INT 14 - Novell TelAPI v4.01 - CONNECTION CONTROL???
	AH = A9h
	DH = session ID???
	CH = subfunction
	    02h ???
	    0Dh ???
	    0Fh ???
	    10h ???
	    11h ???
	    28h ???
	    else
		Return: AH = 09h (not supported)
	???
Return: AH = return code (see #00394)
	???
SeeAlso: AH=A8h"TelAPI",AH=E4h,INT 6B/AX=0600h
--------V-14AA01-----------------------------
INT 14 - DimVGA v2.0+ - INSTALLATION CHECK
	AX = AA01h
Return: AX = FFFFh if installed, unchanged
	BX = version (v1.5+ only), BH = major, BL = minor (v1.5 = 0105h)
	CX = resident segment (v3.1+)
Program: DimVGA is a public domain screen saver by Menno Pieters
SeeAlso: AX=AA02h,AX=AA03h,AX=AA06h,INT 11/AX=0225h/BX=6900h,INT 12"KEYBUI"
SeeAlso: INT 2D/AL=10h"Burnout Plus",INT 2F/AX=6400h,INT 2F/AH=93h
SeeAlso: INT 2F/AX=C000h"VGAsave",INT 2F/AX=C000h"AD-DOS",INT 2F/AX=C050h
SeeAlso: INT 2F/AX=E300h
Index:	screen saver;DimVGA
--------V-14AA02-----------------------------
INT 14 - DimVGA v2.0+ - SET TIME-OUT (DIMMING/BLANKING) PERIOD
	AX = AA02h
	BX = number of clock ticks
Return: AX = FFFFh
Note:	on screen modes with 256 or less colors DimVGA will dim the screen,
	  when more than 256 colors can be used DimVGA will blank the screen.
SeeAlso: AX=AA01h,AX=AA03h,AX=AA04h,AX=AA06h
Index:	screen saver;DimVGA
--------V-14AA03-----------------------------
INT 14 - DimVGA v2.0+ - SET DIMMING FACTOR
	AX = AA03h
	BX = percentage remaining visible (1-99)
Return: AX = FFFFh
SeeAlso: AX=AA02h,AX=AA05h,AX=AA06h
Index:	screen saver;DimVGA
--------V-14AA04-----------------------------
INT 14 - DimVGA v2.0+ - GET TIME-OUT PERIOD
	AX = AA04h
Return: AX = FFFFh
	BX = current time-out in clock ticks
SeeAlso: AX=AA02h,AX=AA05h,AX=AA0Ah
Index:	screen saver;DimVGA
--------V-14AA05-----------------------------
INT 14 - DimVGA v2.0+ - GET DIMMING FACTOR
	AX = AA05h
Return: AX = FFFFh
	BX = current dimming factor
SeeAlso: AX=AA03h,AX=AA04h,AX=AA0Ah
Index:	screen saver;DimVGA
--------V-14AA06-----------------------------
INT 14 - DimVGA v2.0+ - DISABLE
	AX = AA06h
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA07h,AX=AA0Ah
Index:	screen saver;DimVGA
--------V-14AA07-----------------------------
INT 14 - DimVGA v2.0+ - ENABLE
	AX = AA07h
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA06h,AX=AA0Ah
Index:	screen saver;DimVGA
--------V-14AA08-----------------------------
INT 14 - DimVGA v2.0+ - DIM SCREEN 'MANUALLY'
	AX = AA08h
Return: AX = FFFFh
Note:	this function will dim the screen immediately, even if DimVGA is
	  currently disabled
SeeAlso: AX=AA01h,AX=AA02h,AX=AA09h
Index:	screen saver;DimVGA
--------V-14AA09-----------------------------
INT 14 - DimVGA v2.0+ - UNDIM SCREEN 'MANUALLY'
	AX = AA09h
Return: AX = FFFFh
Note:	this function will undim the screen immediately, even if DimVGA is
	  currently disabled
SeeAlso: AX=AA01h,AX=AA08h
Index:	screen saver;DimVGA
--------V-14AA0A-----------------------------
INT 14 - DimVGA v2.0+ - CHECK WHETHER ENABLED
	AX = AA0Ah
Return: AX = FFFFh
	BX = current state (0000h disabled, 0001h enabled)
SeeAlso: AX=AA01h,AX=AA06h,AX=AA07h
Index:	screen saver;DimVGA
--------V-14AA0B-----------------------------
INT 14 - DimVGA v2.1+ - SET HOTKEY
	AX = AA0Bh
	BH = shift state (see #00396)
	BL = keyboard scancode
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA0Ch
Index:	screen saver;DimVGA

Bitfields for DimVGA hotkey shift state:
Bit(s)	Description	(Table 00396)
 7-4	unused
 3	Alt key pressed
 2	Ctrl key pressed
 1	Left shift key pressed
 0	Right shift key pressed
--------V-14AA0C-----------------------------
INT 14 - DimVGA v2.1+ - GET HOTKEY
	AX = AA0Ch
Return: AX = FFFFh
	BH = shift state (see #00396)
	BL = keyboard scancode
SeeAlso: AX=AA01h,AX=AA0Bh
Index:	screen saver;DimVGA
--------V-14AA0D-----------------------------
INT 14 - DimVGA v3.0+ - SET MOUSE CHECK STATUS
	AX = AA0Dh
	BX = new mouse check status
	    0000h mouse checking off
	    0001h mouse checking on
Return: AX = FFFFh
Note:	before switching mouse checking on, a mouse driver should be
	  found in memory. If no mouse driver is found, mouse checking
	  should be switched off (resident DimVGA does not check by itself).
SeeAlso: AX=AA01h,AX=AA0Eh
Index:	screen saver;DimVGA
--------V-14AA0E-----------------------------
INT 14 - DimVGA v3.0+ - GET MOUSE CHECK STATUS
	AX = AA0Eh
Return: BX = mouse check status (0000h disabled, 0001h enabled)
SeeAlso: AX=AA01h,AX=AA0Dh
Index:	screen saver;DimVGA
--------V-14AA0F-----------------------------
INT 14 - DimVGA v3.4 - SET LOCKING STATUS
	AX = AA0Fh
	BX = locking status
	    0000h disabled
	    0001h enabled
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA0Dh,AX=AA10h
Index:	screen saver;DimVGA
--------V-14AA10-----------------------------
INT 14 - DimVGA v3.4 - GET MOUSE CHECK STATUS
	AX = AA10h
Return: BX = locking status (0000h disabled, 0001h enabled)
SeeAlso: AX=AA01h,AX=AA0Dh,AX=AA0Fh
Index:	screen saver;DimVGA
----------14AD-------------------------------
INT 14 - IBM SurePath BIOS - Officially "Private" Function
	AH = ADh
SeeAlso: AH=AEh"IBM",AH=AFh"IBM"
----------14AE-------------------------------
INT 14 - IBM SurePath BIOS - Officially "Private" Function
	AH = AEh
SeeAlso: AH=ADh"IBM",AH=AFh"IBM"
----------14AF-------------------------------
INT 14 - IBM SurePath BIOS - Officially "Private" Function
	AH = AFh
SeeAlso: AH=ADh"IBM",AH=AEh"IBM"
--------S-14AF00BXAAAA-----------------------
INT 14 - 3com BAPI SERIAL I/O - INSTALLATION CHECK
	AX = AF00h
	BX = AAAAh
Return: AX = AF01h if installed
	    BH = protocol type (if BX=AAAAh on entry)
		01h NetManage TCP/IP
	    BL = version for protocol type (if BX=AAAAh on entry)
Note:	early versions of the BAPI and the ROM BIOS simply destroy AX; this
	  behavior is used to determine whether the newer functions (AH=B0h,
	  AH=B1h,etc) are available
SeeAlso: AH=A0h"BAPI"
--------S-14B0-------------------------------
INT 14 - 3com BAPI SERIAL I/O - EN/DISABLE "ENTER COMMAND MODE" (ECM) CHARACTER
	AH = B0h
	AL = new state (00h disabled, 01h enabled)
Return: AH = return code (00h,07h,0Ah) (see #00394)
Note:	disabling the ECM character allows applications to send data which
	  includes the ECM character
SeeAlso: AX=AF00h"BAPI",AH=B1h,AH=B2h
--------S-14B1-------------------------------
INT 14 - 3com BAPI SERIAL I/O - ENTER COMMAND MODE
	AH = B1h
Return: AH = return code (00h,07h,0Ah) (see #00394)
Desc:	provide a means for the application or terminal emulator to perform
	  the same action normally caused by the ECM character
SeeAlso: AH=B0h,AH=B2h
--------S-14B2-------------------------------
INT 14 - 3com BAPI SERIAL I/O - GET ECM WATCH STATE
	AH = B2h
Return: AH = return code (00h,07h,0Ah) (see #00394)
	AL = watch flag (00h disabled, 01h enabled)
Desc:	determine whether the ECM character is enabled
SeeAlso: AH=B0h,AH=B1h
--------S-14B3-------------------------------
INT 14 - 3com BAPI SERIAL I/O - GET/SET CONFIGURATION INFO
	AH = B3h
	AL = direction (00h get, 01h set)
	DH = session ID (00h for external session managment)
	DL = configuration item (00h = end-of-line mapping)
	CX = new configuration item value (if AL=01h)
	    ---if DL=00h---
	    CH = application EOL type (app to Telnet client)
		01h application will send lone CR
		02h application will send CR-? pair
	    CL = driver EOL type (Telnet client to Telnet server)
		01h driver should send CR-NUL pair
		02h driver should send CR-LF pair
Return: AH = return code (00h,03h,09h-0Bh) (see #00394)
	---if AL=00h---
	CX = configuration item value (above)
SeeAlso: AH=B2h
--------N-14E0-------------------------------
INT 14 - TelAPI - "telopen" - CREATE TELNET CONNECTION (BLOCKING)
	AH = E0h
	BX = port number to connect with (default 0017h used if <= 0)
	CX:DX = Internet address of remote host
	DS:DI -> 2-byte remote host (session) identifier
	ES:SI -> 1700-byte buffer for Telnet state record
	    0000h:0000h to use TelAPI internally-allocated space
Return: AX = status (0000h-0009h,FED3h,FF37h,FFBDh,FFC0h,FFCDh) (see #00397)
	ES:SI buffer filled with state record
	ES:SI -> internally-allocated state record in some versions
Note:	the remote host identifier may be used to refer to this connection
SeeAlso: AH=E1h,AH=ECh,AX=FF00h

(Table 00397)
Values for TelAPI status:
 0000h-7FFFh	successful (session number)
 FED3h	(-301)	no session allocated, or out of TelAPI data space
 FF37h	(-201)	all sessions in use
 FFBDh	(-67)	unknown hostname
 FFC0h	(-64)	host not functioning
 FFC3h	(-61)	connection attempt refused
 FFC4h	(-60)	connection attempt timed out
 FFC8h	(-56)	socket already connected
 FFCDh	(-51)	network is unreachable
 FFDDh	(-35)	operation would block
--------S-14E000-----------------------------
INT 14 - MX5 Extended FOSSIL - GET MNP STATUS BLOCK
	AX = E000h
	DX = port number (0-3)
Return: ES:BX -> status block (see #00398)
Program: MX5 is a FOSSIL driver by MagicSoft which emulates MNP Level 5, and
	  ships with the METZ terminal program as MTEMNP.DRV (a TSR despite
	  the .DRV extension)
SeeAlso: AX=E006h

Format of MX5 Extended FOSSIL status block:
Offset	Size	Description	(Table 00398)
 00h	BYTE	flag: active (00h no, 01h yes)
 01h	BYTE	MNP level (2,4,5)
 02h	BYTE	series ID from remote MNP
 03h	DWORD	total packets transmitted
 07h	DWORD	duplicate packets transmitted
 0Bh	DWORD	maximum speed
 0Fh	DWORD	total packets received
 13h	DWORD	duplicate packets received
 17h	DWORD	maximum speed
--------S-14E001-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP LEVEL
	AX = E001h
	BH = function
	    00h get MNP level
	    01h set MNP level
		BL = new level (00h none, 02h/04h/05h MNP level N)
	DX = port number (0-3)
Return: BL = MNP level
SeeAlso: AX=E002h,AX=E003h,AX=E004h,AX=E006h
--------S-14E002-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP ANSWER/ORIGINATE MODE
	AX = E002h
	BH = function
	    00h get answer/originate mode
	    01h set mode
		BL = new mode (00h originate [default], 01h answer)
	DX = port number (0-3)
Return: BL = answer/originate mode
SeeAlso: AX=E001h,AX=E003h,AX=E006h
--------S-14E003-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP WAIT TICKS
	AX = E003h
	BH = function
	    00h get wait ticks
	    01h set wait ticks
		BL = MNP wait ticks (default 0Eh)
	DX = port number (0-3)
Return: BL = wait ticks
SeeAlso: AX=E001h,AX=E002h,AX=E006h
--------S-14E004-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP CONNECT SOUND LEVEL
	AX = E004h
	BH = function
	    00h get sound level
	    01h set sound level
		BL = new sound level (00h off, 01h on [default])
	DX = port number
Return: BL = sound state
Desc:	specify whether MX5 should generate beeps after an MNP connection
	  (three high beeps if successful, high then low on connection failure)
SeeAlso: AX=E002h,AX=E006h
--------S-14E005-----------------------------
INT 14 - MX5 Extended FOSSIL - UNINSTALL
	AX = E005h
Return: BX = segment of MX5's memory block or 0000h on failure
Note:	caller must free the returned memory block to complete the uninstall
SeeAlso: AX=E006h
--------S-14E006BX0000-----------------------
INT 14 - MX5 Extended FOSSIL - INSTALLATION CHECK
	AX = E006h
	BX = 0000h
Return: BX = 4D58h ('MX') if installed
	    AH = major version
	    AL = minor version
SeeAlso: AX=E000h,AX=E001h,AX=E005h,AX=E007h
--------S-14E007-----------------------------
INT 14 - MX5 Extended FOSSIL - WAIT SPECIFIED NUMBER OF TICKS
	AX = E007h
	CX = number of ticks to wait
Return: nothing
SeeAlso: AX=E006h
--------N-14E1-------------------------------
INT 14 - TelAPI - "telclose" - TERMINATE TELNET CONNECTION
	AH = E1h
	BX = connection ID
Return: AX = status (0000h,FFF7h,maybe others) (see #00397)
Note:	flushes and releases all buffers and data space used by the connection
SeeAlso: AH=E0h,AH=E6h,AX=FF00h
--------N-14E2-------------------------------
INT 14 - TelAPI - "telread" - BUFFERED READ
	AH = E2h
	BX = connection ID (see AH=E0h"TelAPI")
	CX = length of buffer in bytes
	ES:SI -> buffer for data
Return: AX > 0000h number of characters actually read
	AX = 0000h host has closed connection
	AX < 0000h error code (see #00397)
Note:	translates CRLF into local EOL if the connection is in ASCII mode,
	  negotiates various Telnet options, and immediately executes several
	  different Telnet action commands
SeeAlso: AH=07h"TelAPI",AH=E3h,AH=E6h,AX=FF00h,INT 6B/AH=01h
--------N-14E3-------------------------------
INT 14 - TelAPI - "telwrite" - BUFFERED WRITE
	AH = E3h
	BX = connection ID
	CX = length of buffer in bytes
	ES:SI -> buffer containing data
Return: AX > 0000h number of characters actually written
	AX < 0000h error code (see #00397)
Note:	translates local EOL into CRLF if the connection is in ASCII mode,
	  sends the appropriate Telnet commands for the characters selected
	  for IP, AYT, AO, EC, EL, and Break
SeeAlso: AH=06h"TelAPI",AH=E2h,AH=E6h,AX=FF00h,INT 6B/AH=00h
--------N-14E4-------------------------------
INT 14 - TelAPI - "telioctl" - CONNECTION CONTROL
	AH = E4h
	BX = connection ID (see AH=E0h"TelAPI")
	CX = Telnet command/option identifier (see #00400)
	ES:SI -> buffer containing command/option argument (see #00399)
Return: AX = status (0000h, etc.) (see #00397)
Desc:	start filter control, initiate Telnet option negotiation, or get filter
	  control status
SeeAlso: AH=A9h,AH=E6h,AX=FF00h,INT 6B/AX=0600h

Format of TelAPI Telnet command/option argument:
Offset	Size	Description	(Table 00399)
 00h  5 WORD	numeric arguments
 0Ah	DWORD	-> ASCIZ string
SeeAlso: #00400

(Table 00400)
Values for TelAPI Telnet command/option identifier:
 01h	ASCII		args: none
 02h	BINARY		args: none
 03h	LOCALECHO	args: none		client echos data
 04h	REMOTEECHO	args: none		server echos data
 05h	SGA		args: none		Suppress Go-Ahead signal
 07h	CHARMODE	args: none		no line-buffering
 08h	LINEMODE	args: -> erase-line ch	perform line-buffering
 09h	RECVEOL		args: EOL type
 0Ah	SENDEOL		args: EOL type
 0Bh	EOR		args: none		enable end-of-record sequence
 0Dh	BREAK		args: -> break char
 0Eh	VERBOSE		args: verbosity		display Telnet negotiations?
 0Fh	AYT		args: -> AYT escape ch
 10h	AO		args: -> AO escape char
 11h	IP		args: -> IP escape char
 12h	EC		args: -> escape char
 13h	EL		args: -> escape char
 14h	STATUS		args: type; returns data in structure
 18h	TERMTYPE	args: -> terminal type
 19h	ATTACHPORT	args: port number ; returns session number
 1Bh	TRANSMIT_EOR	args: EOR enabled	append EOR to every telwrite?
SeeAlso: #00399
--------N-14E5-------------------------------
INT 14 - TelAPI - "telreset" - RESET ALL CONNECTIONS
	AH = E5h
Return: AX = status (0000h,other) (see also #00397)
	    FFFFh unable to reset
Desc:	close all sessions and reset TelAPI to defaults
SeeAlso: AH=E1h,AH=E6h,AX=FF00h
--------N-14E6-------------------------------
INT 14 - TelAPI - "telunload" - UNINSTALL
	AH = E6h
Return: AX = status
	    0000h successful
	    FFFFh unable to uninstall
Notes:	TelAPI also supports the NASI/NACS and NCSI APIs on INT 6B
	this function invokes AH=E5h internally
SeeAlso: AH=E5h,AX=FF00h,INT 6B/AH=00h,INT 6B/AH=10h
--------N-14E7-------------------------------
INT 14 - TelAPI - "tellist" - GET TELNET SESSION LIST
	AH = E7h
	ES:SI -> 10-word buffer for session list
Return: AX = 0000h (successful)
	ES:SI buffer filled
Desc:	determine, for each of the ten allowable sessions, whether the session
	  is currently available
Note:	each word in the buffer is filled with either 0000h to indicate that
	 the corresponding sesion is unavailable, or 0001h if available
SeeAlso: AH=E0h,AH=E5h,AX=FF00h
--------N-14E8-------------------------------
INT 14 - TelAPI - "telattach" - ATTACH COM PORT TO/FROM TELNET SESSION
	AH = E8h
	BX = connection ID (see AH=E0h"TelAPI")
	CX = serial port number (0000h-0003h = COM1-COM4)
Return: AX = status
	    0000h successful
	    FFFFh failed
SeeAlso: AH=E0h,AH=E9h,AX=FF00h
--------N-14E9-------------------------------
INT 14 - TelAPI - "telportosn" - GET SESSION NUMBER FOR COM PORT
	AH = E9h
	DX = serial port number (0000h-0003h = COM1-COM4)
Return: AX >= 0000h session number
	AX < 0000h error code (see #00397)
SeeAlso: AH=E0h,AH=E8h,AH=EAh,AX=FF00h
--------N-14EA-------------------------------
INT 14 - TelAPI - "telstatus" - GET TELNET CONNECTION STATUS INFORMATION
	AH = EAh
	BX = connection ID (see AH=E0h"TelAPI")
	ES:SI -> buffer for status info (see #00401)
Return: AX = status (0000h,FFFFh,etc.)
SeeAlso: AH=E9h,AH=EBh,AX=FF00h

Format of TelAPI Telnet connection status information:
Offset	Size	Description	(Table 00401)
 00h  4 BYTEs	remote host IP address
 04h 20 BYTEs	reserved
 18h	WORD	local port number
 1Ah	BYTE	connection mode (00h = ASCII, 01h = Binary)
 1Bh	BYTE	echo flag (00h local, 01h remote)
 1Ch	BYTE	SGA flag (00h will, 01h won't)
 1Dh	BYTE	EOR negotation flag (00h do negotiate, 01h don't)
 1Eh	BYTE	buffering (00h line mode, 01h character mode)
 1Fh	BYTE	reserved
 20h	BYTE	verbose flag (00h no, 01h verbose mode)
 21h	BYTE	received EOL (00h no xlat, 01h CR, 02h LF, 03h CRLF)
 22h	BYTE	sent EOL (00h no translation, 01h CR, 02h LF)
 23h	BYTE	break character
 24h	BYTE	IP escape character
 25h	BYTE	AO escape character
 26h	BYTE	AYT escape character
 27h	BYTE	EC escape character
 28h	BYTE	EL escape character
 29h 41 BYTEs	ASCIZ Telnet-negotiated terminal type
 52h  9 BYTEs	session ID
SeeAlso: #00402
--------N-14EB-------------------------------
INT 14 - TelAPI - "telname" - GET AVAILABLE/INUSE STATUS FOR ALL SESSIONS
	AH = EBh
	ES:SI -> buffer for session statuses (see #00402)
Return: ES:SI buffer filled
SeeAlso: AH=E9h,AH=EAh,AX=FF00h

Format of TelAPI session status information [array]:
Offset	Size	Description	(Table 00402)
 00h	BYTE	session state (00h available, 01h connected)
 01h  9 BYTEs	session ID if connected
 0Ah	WORD	attached COM port if connected, FFFFh if not
SeeAlso: #00401
--------N-14EC-------------------------------
INT 14 - TelAPI - "telnblkopen" - CREATE TELNET CONNECTION (NON-BLOCKING)
	AH = ECh
	BX = port number to connect with (default 0017h used if <= 0)
	CX:DX = Internet address of remote host
	DS:DI -> 2-byte remote host (connection) identifier
	ES:SI -> 1700-byte buffer for Telnet state record
	    0000h:0000h to use TelAPI internally-allocated space
Return: AX = status (0000h-0009h,FED3h,FF37h,FFBDh,FFC0h,FFCDh) (see #00397)
	ES:SI buffer filled with state record
	ES:SI -> internally-allocated state record in some versions
Notes:	the remote host identifier may be used to refer to this connection
	this function returns immediately; use AH=EDh to check whether the
	  connection has been established yet
	this function is not supported by the Microdyne TelAPI v3.7
SeeAlso: AH=E0h"TelAPI",AH=EDh,AX=FF00h
--------N-14ED-------------------------------
INT 14 - TelAPI - "telpoll" - POLL TELNET SESSION FOR CONNECTION COMPLETION
	AH = EDh
	BX = connection ID (see AH=ECh)
Return: AX = status (0000h,0001h,FFFFh,etc.) (see also #00397)
	    0000h session now connected
	    0001h connection still in progress
Note:	this function is not supported by the Microdyne TelAPI v3.7
SeeAlso: AH=EDh,AX=FF00h
--------a-14F0F0-----------------------------
INT 14 - ASAP v1.0 - ???
	AX = F0F0h
	DX = ???
	???
Return: ???
Program: ASAP (Automatic Screen Access Program) is a shareware screen reader
	  by MicroTalk
SeeAlso: AX=F0F1h
--------a-14F0F1DX0000-----------------------
INT 14 - ASAP v1.0 - INSTALLATION CHECK
	AX = F0F1h
	DX = 0000h
Return: DX = segment of resident code
	    0000h if not installed
Program: ASAP (Automatic Screen Access Program) is a shareware screen reader
	  by MicroTalk
SeeAlso: AX=F0F0h,INT 10/AX=3800h
--------S-14F4FF-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - INSTALLATION CHECK
	AX = F4FFh
	DX = port (00h-03h)
Return: CF clear if present
	    AX = 0000h
	CF set if not present
	    AX <> 0000h
SeeAlso: AH=36h"ComShare",AH=F9h,AH=FCh
--------S-14F9-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - REGAIN CONTROL
	AH = F9h
	DX = port (00h-03h)
Return: nothing
SeeAlso: AX=F4FFh
--------S-14FA-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SEND BREAK
	AH = FAh
	DX = port (00h-03h)
Return: nothing
SeeAlso: AH=07h"MBBIOS",AH=1Ah,AH=8Ah
--------S-14FB-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SET OUTGOING MODEM SIGNALS
	AH = FBh
	AL = modem control register (see #00334 at AH=05h"SERIAL")
	DX = port (00h-03h)
Return: nothing
SeeAlso: AH=05h"SERIAL"
--------S-14FC-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - READ CHARACTER, NO WAIT
	AH = FCh
	DX = port (00h-03h)
Return: AH = RS232 status bits (see #00304 at AH=03h)
	AL = character
SeeAlso: AH=02h,AH=0Ch,AX=FF02h
--------S-14FD02-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - READ STATUS
	AX = FD02h
Return: CX = number of characters available
--------N-14FF00-----------------------------
INT 14 - TelAPI - "telcheck" - INSTALLATION CHECK
	AX = FF00h
Return: AX = 00FFh if installed
	    BX = version number * 100 (decimal)
SeeAlso: AH=E6h,AX=F4FFh
--------S-14FF01-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SET SEND BUFFER
	AX = FF01h
	CX = length of buffer (0000h to cancel buffer assignment)
	DX = port (00h-03h)
	ES:BX -> send buffer
Return: nothing
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A5h"BAPI",AH=FCh,AX=FF02h
--------S-14FF02-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SET RECEIVE BUFFER
	AX = FF02h
	CX = length of buffer (0000h to cancel buffer assignment)
	DX = port (00h-03h)
	ES:BX -> receive buffer
Return: nothing
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A5h"BAPI",AH=FCh,AX=FF01h
--------S-14FFF8-----------------------------
INT 14 - COMM-DRV v14.0 - SET BAUD RATE DIVISOR
	AX = FFF8h
	BX = card type (sub-device number)
	CX = new baudrate divisor
	DX = index to baud rate
Return: AH bit 7 set on error
	AH bit 7 clear if successful
Program: COMM-DRV is a universal serial communications driver by Willies'
	  Computer Software Company, which supports standard INT 14 and
	  FOSSIL calls as well as its own interfaces
SeeAlso: AX=8000h"COMM-DRV"
--------S-14FFFB-----------------------------
INT 14 - COMM-DRV v14.0 - GET HIGHEST ALLOWED PORT NUMBER
	AX = FFFBh
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
	    BX = highest port number
--------S-14FFFC-----------------------------
INT 14 - COMM-DRV v14.0 - GET INT 14 FLAGS
	AX = FFFCh
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
	    BX = flags (see #00403)
SeeAlso: AX=FFFDh

Bitfields for INT 14h flags:
Bit(s)	Description	(Table 00403)
 0	port active for INT 14h
 1	interface behaving like a FOSSIL driver
--------S-14FFFD-----------------------------
INT 14 - COMM-DRV v14.0 - SET INT 14 FLAGS
	AX = FFFDh
	BX = flags (see #00403)
	DX = port number
Return: AH bit 7 set on error
	AH bit 7 clear if successful
SeeAlso: AX=FFFCh
--------S-14FFFE-----------------------------
INT 14 - COMM-DRV v14.0 - RESTORE INT 14 VECTOR TO ORIGINAL
	AX = FFFEh
Return: AH bit 7 set on error
	AH bit 7 clear if successful
--------S-14FFFF-----------------------------
INT 14 - COMM-DRV v14.0 - GET INT 14 INFORMATION AREA
	AX = FFFFh
	BX:SI -> DWORD buffer for address of information area (see #00404)
		  (initialized to zeros)
Return: BX:SI buffer filled with nonzero value if installed
Program: COMM-DRV is a universal serial communications driver by Willies'
	  Computer Software Company, which supports standard INT 14 and
	  FOSSIL calls as well as its own interfaces
Index:	installation check;COMM-DRV

Format of COMM-DRV information area:
Offset	Size	Description	(Table 00404)
 00h  8 BYTEs	signature "COMM-DRV"
 08h  2 BYTEs	00h,00h
 0Ah	DWORD	-> direct address mapping table
 0Eh	DWORD	previous INT 14 vector
--------t-15---------------------------------
INT 15 - Microsoft TSR Specification
	No additional information available at this time.
--------B-1500-------------------------------
INT 15 - CASSETTE - TURN ON TAPE DRIVE'S MOTOR (PC and PCjr only)
	AH = 00h
Return: CF set on error
	    AH = 86h no cassette present
	CF clear if successful
SeeAlso: AH=01h"CASSETTE",MEM 0040h:0067h"PC"
--------M-1500-------------------------------
INT 15 - Amstrad PC1512 - GET AND RESET MOUSE COUNTS
	AH = 00h
Return: CX = signed X count
	DX = signed Y count
--------O-1500-------------------------------
INT 15 - VMiX v2+ - INSTALLATION CHECK
	AH = 00h
Return: DX = 0798h if installed
	    AX = version (AH = major, AL = minor)
--------T-1500-------------------------------
INT 15 - MultiDOS Plus - GIVE UP TIME SLICE
	AH = 00h
Return: nothing
Note:	if issued by the highest-priority task while MultiDOS is using
	  priority-based rather than round-robin scheduling, control will be
	  returned to the caller immediately
SeeAlso: AH=03h"MultiDOS",AX=1000h
--------B-1501-------------------------------
INT 15 - CASSETTE - TURN OFF TAPE DRIVE'S MOTOR (PC and PCjr only)
	AH = 01h
Return: CF set on error
	    AH = 86h no cassette present
	CF clear if successful
SeeAlso: AH=00h"CASSETTE"
--------b-1501-------------------------------
INT 15 - Amstrad PC1512 - WRITE DATA TO NON-VOLATILE RAM
	AH = 01h
	AL = NVRAM location (00h to 3Fh) (see #00405)
	BL = NVRAM data value
Return: AH = return code
	    00h OK
	    01h address bad
	    02h write error
SeeAlso: AH=02h"Amstrad"

Format of Amstrad NVRAM:
Offset	Size	Description	(Table 00405)
 00h	BYTE	time of day: seconds
 01h	BYTE	alarm time: seconds
 02h	BYTE	time of day: minutes
 03h	BYTE	alarm time: minutes
 04h	BYTE	time of day: hours
 05h	BYTE	alarm time: hours
 06h	BYTE	day of week, 1 = Sunday
 07h	BYTE	day of month
 08h	BYTE	month
 09h	BYTE	year mod 100
 0Ah	BYTE	RTC status register A (see #00406)
 0Bh	BYTE	RTC status register B (see #00407)
 0Ch	BYTE	RTC status register C (read-only) (see #00408)
 0Dh	BYTE	RTC status register D
		bit 7: battery good
 0Eh  6 BYTEs	time and date machine last used
 14h	BYTE	user RAM checksum
 15h	WORD	Enter key scancode/ASCII code
 17h	WORD	Forward delete key scancode/ASCII code
 19h	WORD	Joystick fire button 1 scancode/ASCII code
 1Bh	WORD	Joystick fire button 2 scancode/ASCII code
 1Dh	WORD	mouse button 1 scancode/ASCII code
 1Fh	WORD	mouse button 2 scancode/ASCII code
 21h	BYTE	mouse X scaling factor
 22h	BYTE	mouse Y scaling factor
 23h	BYTE	initial VDU mode and drive count
 24h	BYTE	initial VDU character attribute
 25h	BYTE	size of RAM disk in 2K blocks
 26h	BYTE	initial system UART setup byte
 27h	BYTE	initial external UART setup byte
 28h 24 BYTEs	available for user application
Note:	bytes 00h-0Dh are the same on the IBM AT as they are used/updated by
	  the clock chip

Bitfields for RTC status register A:
Bit(s)	Description	(Table 00406)
 7	set if date/time being updated
 6-4	time base speed, default 010 = 32768 Hz
 3-0	interrupt rate selection, default 0110 = 1024 Hz
SeeAlso: #00405

Bitfields for RTC status register B:
Bit(s)	Description	(Table 00407)
 7	clear if normal update, set if abort update
 6	periodic interrupt enable
 5	alarm interrupt enable
 4	update end interrupt enable
 3	square wave enable
 2	date mode (clear = BCD, set = binary)
 1	24-hour format
 0	daylight saving time enable
SeeAlso: #00405

Bitfields for RTC status register C:
Bit(s)	Description	(Table 00408)
 7	IRQF flag
 6	PF flag
 5	AF flag
 4	UF flag
SeeAlso: #00405
--------O-1501-------------------------------
INT 15 - VMiX - "sys_chanreq" - I/O CHANNEL OBJECT MANAGER
	AH = 01h
	STACK:	WORD	object ID of requestor
		DWORD	pointer to ASCIZ name of requested method
			"assign" assign channel to object
			"deassign" deassign channel
			"cursor" set cursor on/off
			"init" initialize comm port
			"open" open I/O channel
			"position" set cursor position
			"receive" get buffered packet from comm port
			"send" send buffered packet to comm port
			"vio" set current virtual I/O to specified channel
			"window" make window at cursor position
		---if "assign"---
		 WORD	object UID
		 WORD	caller UID/PID
		 DWORD	CSL with port
		---if "deassign"---
		 WORD	channel ID
		---if "cursor"---
		 WORD	channel ID (must be a SRCSINK)
		 WORD	new state (0000h off, 0001h on)
		---if "init"---
		 WORD	channel ID (must be a SRCSINK)
		 WORD	comm port number (00h-03h)
		 WORD	UART init code
		---if "open"---
		 WORD	channel ID
		---if "position"---
		 WORD	channel ID (must be a SRCSINK)
		 WORD	position (high byte = row, low byte = column)
		---if "receive"---
		 DWORD	pointer to buffer
		---if "send"---
		 WORD	length of buffer
		 DWORD	pointer to buffer
		---if "vio"---
		 WORD	channel ID (must be a SRCSINK)
		---if "window"---
		 WORD	top left (high byte = row, low byte = column)
		 WORD	bottom right (high byte = row, low byte = column)
Return: DX:AX -> IRP structure or 0000h:0000h
SeeAlso: AH=00h"VMiX",AH=02h"VMiX"
--------T-1501-------------------------------
INT 15 - MultiDOS Plus - REQUEST RESOURCE SEMAPHORE
	AH = 01h
	AL = semaphore number (00h-3Fh)
Return: AH = status
	    00h successful
	    02h invalid semaphore number
Notes:	if the semaphore is not owned, ownership is assigned to the calling
	  task and the call returns immediately
	if the semaphore is already owned by another task, the calling task
	  is placed on a queue for the semaphore and suspended until it can
	  become owner of the semaphore
	semaphore 0 is used internally by MultiDOS to synchronize DOS access
SeeAlso: AH=02h"MultiDOS",AH=10h"MultiDOS",AH=1Bh"MultiDOS"
--------B-1502-------------------------------
INT 15 - CASSETTE - READ DATA (PC and PCjr only)
	AH = 02h
	CX = number of bytes to read
	ES:BX -> buffer
Return: CF clear if successful
	    DX = number of bytes read
	    ES:BX -> byte following last byte read
	CF set on error
	AH = status (see #00409)
SeeAlso: AH=00h"CASSETTE",AH=03h"CASSETTE",MEM 0040h:0069h,MEM 0040h:006Bh"PC"

(Table 00409)
Values for Cassette status:
 00h	successful
 01h	CRC error
 02h	bad tape signals
 04h	no data
 80h	invalid command
 86h	no cassette present
--------b-1502-------------------------------
INT 15 - Amstrad PC1512 - READ DATA FROM NON-VOLATILE RAM
	AH = 02h
	AL = NVRAM location (00h to 3Fh)
Return: AH = return code
	    00h OK
	    01h address bad
	    02h checksum error
	AL = NVRAM data value
SeeAlso: AH=01h"Amstrad"
--------O-1502-------------------------------
INT 15 - VMiX - "sys_memreq" - MEMORY OBJECT MANAGER
	AH = 02h
	STACK:	WORD	object ID of requestor
		DWORD	pointer to ASCIZ name of requested method
			"assign" allocate low memory block
			"assign extended" allocate extended memory pages
			"assign gdt" allocate GDT selector
			"paged" allocate low paged memory
			"paged extended" alllocate extended memory pages
			"deassign" free memory block
			"deassign gdt" free GDT selector
			"getvpage" get physical address for virtual page
			"setvpage" set physical address for virtual page
			"info" get VMiX memory usage info block
			"move" move contents of 32-bit memory
			"newmcb" make new DOS memory control block
			"owner" get process ID of MCB or PSP owner
			"umb" allocate upper memory block
			"video" toggle system use of video memory and get stat
		---if "assign"---
		 WORD	number of objects
		 WORD	size in bytes (multiple of 512 bytes)
		---if "assign extended"---
		 WORD	number of objects
		 WORD	size in bytes (multiple of 4K)
		---if "assign gdt"---
		 WORD	access type (low byte)
		 WORD	segment size in paragraphs
		 DWORD	pointer to start of physical segment
		---if "paged"---
		 WORD	number of 512-byte pages
		---if "paged extended"
		 WORD	number of 4K pages
		---if "deassign"---
		 DWORD	pointer returned by previous allocation call
		---if "deassign gdt"---
		 WORD	GDT selector
		---if "getvpage"---
		 WORD	owner's process ID
		 DWORD	pointer to buffer for page structure (struct VPGE)
		---if "setvpage"---
		 WORD	owner's process ID
		 DWORD	pointer to new page structure (struct VPGE)
		---if "info"---
		 no additional arguments
		---if "move"
		 DWORD	32-bit source address
		 DWORD	32-bit destination address
		 WORD	number of words to move
		---if "newmcb"---
		 DWORD	pointer to new MCB's location
		 WORD	size of memory block
		 DWORD	pointer to ASCIZ name string (max 8 chars)
		---if "owner"---
		 WORD	MCB or PSP segment
		---if "umb"---
		 WORD	size in paragraphs
		---if "video"---
		 no additional arguments
Return: DX:AX -> memory block or VPGE struct or 0000h:0000h
SeeAlso: AH=00h"VMiX",AH=01h"VMiX"
--------T-1502-------------------------------
INT 15 - MultiDOS Plus - RELEASE RESOURCE SEMAPHORE
	AH = 02h
	AL = semaphore number (00h-3Fh)
Return: AH = status
	    00h successful
	    01h not semaphore owner
	    02h invalid semaphore number
Notes:	if any tasks are waiting for the semaphore, the first task on the wait
	  queue will become the new owner and be reawakened
	do not use within an interrupt handler
SeeAlso: AH=01h"MultiDOS",AH=10h"MultiDOS",AH=1Ch"MultiDOS"
--------B-1503-------------------------------
INT 15 - CASSETTE - WRITE DATA (PC and PCjr only)
	AH = 03h
	CX = number of bytes to write
	ES:BX -> data buffer
Return: CF clear if successful
	    ES:BX -> byte following last byte written
	CF set on error
	AH = status (see #00409)
	CX = 0000h
SeeAlso: AH=00h"CASSETTE",AH=02h"CASSETTE"
--------V-1503-------------------------------
INT 15 - Amstrad PC1512 - WRITE VDU COLOR PLANE WRITE REGISTER
	AH = 03h
	AL = value (I,R,G,B bits)
Return: nothing
SeeAlso: AH=04h"Amstrad"
--------O-1503-------------------------------
INT 15 - VMiX - "sys_pinput" - PROMPTED CONSOLE INPUT
	AH = 03h
	STACK:	DWORD	pointer to ASCII prompt
		WORD	field outline character
		WORD	length of input field (max 7Fh)
		DWORD	address of pointer to input buffer
Return: AX = length of input (input buffer is padded with blanks)
SeeAlso: AH=04h"VMiX"
--------T-1503-------------------------------
INT 15 - MultiDOS Plus - SUSPEND TASK FOR INTERVAL
	AH = 03h
	DX = number of time slices to remain suspended
Return: after specified interval has elapsed
Note:	when priority-based scheduling is in use, high-priority tasks should
	  use this function to yield the processor
SeeAlso: AH=00h"MultiDOS",AH=0Ah"MultiDOS"
--------B-1504-------------------------------
INT 15 - SYSTEM - BUILD ABIOS SYSTEM PARAMETER TABLE (PS)
	AH = 04h
	ES:DI -> 32-byte results buffer for System Parameter Table (see #00410)
	DS = segment containing ABIOS RAM extensions (zero if none)
Return: CF clear if successful
	    AH = 00h success
	    ES:DI buffer filled
	    AL destroyed
	CF set on failure
	    AX destroyed
	    AH = 80h/86h if not supported
SeeAlso: AH=05h"ABIOS",AH=C1h

Format of ABIOS System Parameter Table:
Offset	Size	Description	(Table 00410)
 00h	DWORD	FAR address of ABIOS Common Start Routine
 04h	DWORD	FAR address of ABIOS Interrupt Routine
 08h	DWORD	FAR address of ABIOS Time-out Routine
 0Ch	WORD	number of bytes of stack required by this ABIOS implementation
 0Eh 16 BYTEs	reserved
 1Eh	WORD	number of entries in initialization table
--------V-1504-------------------------------
INT 15 - Amstrad PC1512 - WRITE VDU COLOR PLANE READ REGISTER
	AH = 04h
	AL = value (RDSEL1 and RDSEL0)
Return: nothing
SeeAlso: AH=03h"Amstrad",AH=05h"Amstrad"
--------O-1504-------------------------------
INT 15 - VMiX - "sys_vprintf" - FORMATTED OUTPUT TO STREAM
	AH = 04h
	STACK:	DWORD	control string
		DWORD	array of arguments
Return: nothing
SeeAlso: AH=03h"VMiX"
--------T-1504-------------------------------
INT 15 - MultiDOS Plus - SEND MESSAGE TO ANOTHER TASK
	AH = 04h
	AL = mailbox number (00h-3Fh)
	CX = message length in bytes
	DS:SI -> message
Return: AH = status
	    00h successful
	    01h out of message memory
	    02h invalid mailbox number
Note:	the message is copied into a system buffer; the caller may immediately
	  reuse its buffer
SeeAlso: AH=05h"MultiDOS"
--------B-1505-------------------------------
INT 15 - SYSTEM - BUILD ABIOS INITIALIZATION TABLE (PS)
	AH = 05h
	ES:DI -> results buffer of length 18h * Number_of_Entries (see #00411)
	DS = segment containing ABIOS RAM extensions (zero if none)
Return: CF clear if successful
	    AH = 00h success
	    ES:DI buffer filled
	    AL destroyed
	CF set on failure
	    AX destroyed
	    AH = 80h/86h if not supported
SeeAlso: AH=04h"ABIOS",AH=C1h

Format of one entry of ABIOS Initialization Table:
Offset	Size	Description	(Table 00411)
 00h	WORD	device ID (see #00412)
 02h	WORD	number of Logical IDs
 04h	WORD	Device Block length (zero for ABIOS patch or extension)
 06h	DWORD	-> init routine for Device Block and Function Transfer Table
 0Ah	WORD	request block length
 0Ch	WORD	Function Transfer Table length (zero for a patch)
 0Eh	WORD	Data Pointers length (in Common Data Area)
 10h	BYTE	secondary device ID (hardware level this ABIOS ver supports)
 11h	BYTE	revision (device driver revision level this ABIOS supports)
 12h  6 BYTEs	reserved

(Table 00412)
Values for ABIOS device ID:
 00h	ABIOS internal calls
 01h	floppy disk
 02h	hard disk
 03h	video
 04h	keyboard
 05h	parallel port
 06h	serial port
 07h	system timer
 08h	real-time clock
 09h	system services
 0Ah	NMI
 0Bh	mouse
 0Eh	CMOS RAM
 0Fh	DMA
 10h	Programmable Option Select (POS)
 16h	keyboard password
--------V-1505-------------------------------
INT 15 - Amstrad PC1512 - WRITE VDU GRAPHICS BORDER REGISTER
	AH = 05h
	AL = value (I,R,G,B bits)
Return: nothing
SeeAlso: AH=04h"Amstrad"
--------O-1505-------------------------------
INT 15 - VMiX - "sys_getpid" - GET PROCESS ID OF CURRENT PROCESS
	AH = 05h
Return: AX = process ID
SeeAlso: AH=06h"VMiX",AH=0Bh"VMiX"
--------T-1505-------------------------------
INT 15 - MultiDOS Plus - CHECK MAILBOX
	AH = 05h
	AL = mailbox number (00h-3Fh)
Return: AH = status
	    00h successful
		DX = length of first message in queue, 0000h if no message
	    02h invalid mailbox number
SeeAlso: AH=04h"MultiDOS",AH=06h"MultiDOS"
--------b-1506-------------------------------
INT 15 - Amstrad PC1512 - GET ROS VERSION NUMBER
	AH = 06h
Return: BX = version number
--------O-1506-------------------------------
INT 15 - VMiX - "sys_getpcb" - GET POINTER TO PROCESS CONTROL BLOCK
	AH = 06h
	STACK:	WORD	process ID
Return: DX:AX -> process control block
SeeAlso: AH=05h"VMiX",AH=07h"VMiX",AH=08h"VMiX"
--------T-1506-------------------------------
INT 15 - MultiDOS Plus - READ MAILBOX
	AH = 06h
	AL = mailbox number (00h-3Fh)
	CX = size of buffer in bytes
	ES:DI -> buffer for message
Return: AH = status
	    00h successful
		CX = number of bytes copied
		DX = actual length of message
	    02h invalid mailbox number
Note:	if the caller's buffer is not large enough, the message is truncated
	  and the remainder is lost
SeeAlso: AH=04h"MultiDOS",AH=05h"MultiDOS"
--------O-1507-------------------------------
INT 15 - VMiX - "sys_getocb" - GET POINTER TO OBJECT CONTROL BLOCK
	AH = 07h
	STACK:	WORD	object type
Return: DX:AX -> object control block
SeeAlso: AH=06h"VMiX",AH=08h"VMiX"
----------1507-------------------------------
INT 15 - IBM SurePath BIOS - Officially "Private" Function
	AH = 07h
SeeAlso: AH=08h"IBM"
--------T-1507-------------------------------
INT 15 - MultiDOS Plus - SPAWN INTERNAL TASK (CREATE NEW THREAD)
	AH = 07h
	BX:CX = entry point of new task
	DX = stack size in paragraphs
Return: AH = status
	    00h successful
	    01h no free task control blocks
	    02h no free memory for task's stack
Note:	execution returns immediately to calling task
SeeAlso: AH=08h"MultiDOS",AH=09h"MultiDOS",AH=13h"MultiDOS"
--------O-1508-------------------------------
INT 15 - VMiX - "sys_getccb" - GET CHANNEL CONTROL BLOCK
	AH = 08h
	STACK:	WORD	channel ID
Return: DX:AX -> channel control block
SeeAlso: AH=06h"VMiX",AH=07h"VMiX"
--------B-1508-------------------------------
INT 15 - IBM SurePath BIOS - WAIT REQUESTED TIME PERIOD
	AH = 08h
	AL = function
	    00h wait in increments of 15.025 microseconds
		CX = number of time increments to wait (0000h = maximum)
	    80h wait in increments of 840 ns
		ECX = number of time increments to wait
	    81h I/O event wait
		BH = bitmask of bits to check
		BL = expected pattern
		DX = I/O port address
		ECX = number of 840 ns microticks to wait
		Return: ECX = 00000000h if expected pattern did not occur
	    82h memory event wait
		BH = bitmask of bits to check
		BL = expected pattern
		ES:SI -> BYTE to check
		ECX = number of 840 ns microticks to wait
		Return: ECX = 00000000h if expected pattern did not occur
	    other reserved
Return: CF clear if successful
	CF set on error
	AH = status
	    00h successful
	    01h used 15.025 microsecond interval, time rounded up
	    08h reserved subfunction
	    86h function not supported
Notes:	IBM classifies this function as optional
	if the POST determines that the timer is nonfunctional, this function
	  uses the 15.025 microsecond refresh timer instead of the
	  full-resolution timer
SeeAlso: AH=07h"IBM",AH=09h"IBM",AH=86h
--------T-1508-------------------------------
INT 15 - MultiDOS Plus - TERMINATE INTERNAL TASK (KILL THREAD)
	AH = 08h
Return: calling task terminated, so execution never returns to caller
Notes:	an internal task must be terminated with this function rather than a
	  DOS termination function
	task's stack space is returned to parent task's memory pool
SeeAlso: AH=07h"MultiDOS"
--------O-1509-------------------------------
INT 15 - VMiX - "sys_getqueue" - GET ID OF QUEUED ELEMENT
	AH = 09h
	STACK:	WORD	queue ID (0 = process queue, 1 = object, 3 = type)
		WORD	subqueue ID
Return: AX = queue ID
SeeAlso: AH=0Ah"VMiX"
----------1509-------------------------------
INT 15 - IBM BIOS - RESERVED FOR PCMCIA SYSTEM RESOURCE TABLE ACCESS
	AH = 09h
	no further details available
SeeAlso: AH=08h"IBM"
--------T-1509-------------------------------
INT 15 - MultiDOS Plus - CHANGE TASK'S PRIORITY
	AH = 09h
	AL = new priority
Return: nothing
Note:	the priority has different meanings depending on whether priority-
	  based or round-robin scheduling is used
SeeAlso: AH=07h"MultiDOS"
--------O-150A-------------------------------
INT 15 - VMiX - "sys_qetqnext" - GET ID OF NEXT QUEUED ELEMENT
	AH = 0Ah
	STACK:	WORD	queue ID (0 = process queue, 1 = object, 3 = type)
		WORD	ID of current element in queue chain
Return: AX = ID of next element
SeeAlso: AH=09h"VMiX",AH=0Fh"VMiX"
--------T-150A-------------------------------
INT 15 - MultiDOS Plus - CHANGE TIME SLICE INTERVAL
	AH = 0Ah
	AL = new interval
	    00h = 55.0 ms (default)
	    80h = 27.5 ms
	    40h = 13.75 ms
	    20h = 6.88 ms
	    10h = 3.44 ms
	    08h = 1.72 ms
SeeAlso: AH=03h"MultiDOS"
--------O-150B-------------------------------
INT 15 - VMiX - "sys_sysreq" - SYSTEM CONFIGURATION MANAGER
	AH = 0Bh
	STACK:	WORD	caller's UID
		DWORD	pointer to ASCIZ name of requested method
			"abort" abort current send/receive on comm port
			"block" start/end critical section
			"close" terminate interrupt-drive comm I/O
			"open" prepare comm port for interrupt-driven I/O
			"delay" set delay timer and wait
			"hibernate" put process to sleep
			"ints" enable/disable interrupt-driven INT 14h
			"length" get current send/receive buffer offsets
			"kswitch" switch stacks
			"numproc" get number of active processes
			"protocol" set protocol function for comm interrupts
			"relocate" set/reset VMiX flag for relocating to himem
			"status" get current open comm port status
			"wake" awaken a process
			"xport" get comm port polled for logins
		---if "abort"---
		 no additional arguments
		---if "block"---
		 WORD	0000h end, 0001h start
		---if "close"---
		 no additional arguments
		---if "open"---
		 WORD	comm port (00h-03h)
		 WORD	BIOS parameter byte (see #00300 at INT 14/AH=00h),
			except bits 7-5: 000 = 19200, 001 = 38400, 011 = 115200
		---if "delay"---
		 WORD	time in seconds
		---if "hibernate"---
		 WORD	process ID
		---if "ints"---
		 WORD	0000h if no, 0001h if yes
		---if "length","numproc","relocate","status","xport"---
		 no additional arguments
		---if "kswitch"---
		 DWORD	pointer to new stack
		---if "protocol"---
		 DWORD	pointer to function (must be in low "assign"ed memory
			when in 386 mode)
		---if "wake"---
		 WORD	process ID
Return: DX:AX -> result or 0000h:0000h
		---if "length"---
		 BYTE	receive offset
		 BYTE	send offset
		---if "kswitch"---
		 DWORD	old stack pointer
		---if "numproc"---
		 WORD	number of active processes
		---if "status"---
		 current open comm port status
		---if "xport"---
		 current comm port being polled for logins
Note:	the "delay" command reportedly disables the keyboard until the delay
	  completes
SeeAlso: AH=05h"VMiX",AH=0Eh"VMiX"
--------T-150B-------------------------------
INT 15 - MultiDOS Plus - FORCE DISPLAY OUTPUT TO PHYSICAL SCREEN MEMORY
	AH = 0Bh
Return: nothing
Notes:	sets calling task's screen pointer to actual screen memory; the pointer
	  may be restored with AH=0Ch
	caller's video mode must be same as foreground task's video mode
	any text written while in the background will be saved to the
	  foreground task's virtual screen when it switches to the background
	useful if a background task wants to display a message on the
	  foreground screen
SeeAlso: AH=0Ch"MultiDOS"
--------O-150C-------------------------------
INT 15 - VMiX - "sys_getstack" - GET POINTER TO PROCESS TSS STACK
	AH = 0Ch
	STACK:	WORD	process ID
Return: DX:AX -> TSS stack store
SeeAlso: AH=00h"VMiX"
--------T-150C-------------------------------
INT 15 - MultiDOS Plus - RESTORE OLD VIDEO DISPLAY MEMORY
	AH = 0Ch
Return: nothing
Note:	restores task's screen pointer saved by AH=0Bh; must not be called
	  unless AH=0Bh has been called first
SeeAlso: AH=0Bh"MultiDOS"
--------O-150D-------------------------------
INT 15 - VMiX - "sys_spawn" - START A CHILD PROCESS JOB SHELL
	AH = 0Dh
	STACK:	DWORD	ASCIZ string starting with requested I/O channel and
			followed by standard VMiX shell command string
Return: AX = process ID or error code "SYS_ERROR"
Note:	the maximum string length is 7Fh characters
SeeAlso: AH=0Eh"VMIX",AH=11h"VMiX",INT 21/AH=4Bh
--------T-150D-------------------------------
INT 15 - MultiDOS Plus - DISABLE MULTITASKING
	AH = 0Dh
Return: nothing
Note:	calling task receives all time slices until AH=0Eh is called; this
	  allows time-critical events or nonreentrant code to be processed
SeeAlso: AH=0Eh"MultiDOS",AH=10h"MultiDOS",AX=101Bh,AH=20h"MultiDOS"
--------O-150E-------------------------------
INT 15 - VMiX - "sys_kill" - HARD TERMINATE PROCESS
	AH = 0Eh
	STACK:	WORD	process ID
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=0Bh"VMiX",AH=0Dh"VMIX"
--------T-150E-------------------------------
INT 15 - MultiDOS Plus - ENABLE MULTITASKING
	AH = 0Eh
Return: nothing
SeeAlso: AH=0Dh"MultiDOS",AX=101Ch,AH=20h"MultiDOS"
--------d-150F-------------------------------
INT 15 C - SYSTEM - FORMAT UNIT PERIODIC INTERRUPT (PS ESDI drives only)
	AH = 0Fh
	AL = phase code
	    00h reserved
	    01h surface analysis
	    02h formatting
Return: CF clear if formatting should continue
	CF set if formatting should terminate
Note:	called during ESDI drive formatting after each cylinder is completed
SeeAlso: INT 13/AH=1Ah
--------O-150F-------------------------------
INT 15 - VMiX - "sys_getqkey" - GET KEY FIELD OF QUEUED ELEMENT
	AH = 0Fh
	STACK:	WORD	queue ID (0 = process queue, 1 = object q, 3 = type q)
		WORD	ID of element in queue chain
Return: AX = key
SeeAlso: AH=0Ah"VMiX"
--------T-150F-------------------------------
INT 15 - MultiDOS Plus - EXECUTE A MULTIDOS PLUS COMMAND
	AH = 0Fh
	DS:BX -> ASCIZ command
Return: after command has been processed
Notes:	specified string is executed as if it had been typed at the MultiDOS
	  command prompt
	the task is placed on a queue which MultiDOS examines periodically and
	  is suspended until MultiDOS has processed the command
	all lowercase characters up to the first blank are converted to upper
	  case within the given buffer
--------!---Section--------------------------