INTERRUP.

Interrupt List Release 61 Last change 16jul00
Copyright (c) 1989-1999,2000 Ralf Brown

Index for category - - uncategorized

104F14 - INT 10 - VESA OEM Extensions - API

INT 10 - VESA OEM Extensions - API
	AX = 4F14h
	BL = function
	    00h installation check / get capabilities
	other registers vary by function
Return: varies by function
Note:	this function is provided for OEMs to implement system-specific
	  functionality in a VESA-compatible manner

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104F14 - INT 10 - VESA OEM Extensions - Matrox Millenium (BIOS v2.1)

INT 10 - VESA OEM Extensions - Matrox Millenium (BIOS v2.1)
	AX = 4F14h
	BL = function
	    00h installation check / get capabilities
		ES:DI -> 256-byte buffer for Matrox-specific information
			(see #00125)
		Return: ES:DI buffer filled
	    01h read/write MGA indexed data register
		BH = direction (00h = write, else read)
		CL = register number (80h for most-recently used register)
		CH = new value, if writing
		Return: CH = current value, if reading
	    02h read/write register in MGA control space
		BH = direction and size
			bit 4: read register instead of writing
			bits 1-0: data size (00 = BYTE, 01 = WORD, 10 = DWORD)
		SI = register address
		CL/CX/ECX = new value if writing
		Return: CL/CX/ECX = current value if reading
	    03h read PINS byte
		SI = offset of byte within PINS data (see #00126)
		Return: CL = value of specified PINS byte
	    04h ??? (related to PLL programming)
		DX = ???
		Return: CL,EDX destroyed
	    05h read BIOS byte
		SI = offset of byte relative to start of BIOS image
		Return: CL = specified byte
	    else
		Return: AX = FFFFh
Return: AL = 4Fh if function supported
	    AH = status
		00h successful
		01h failed
Note:	most of this info is from http:\\grafi.ii.pw.edu.pl\gbm\matrox
SeeAlso: MEM C000h:7FFCh"Matrox"

Format of Matrox-specific VESA extensions information:
Offset	Size	Description	(Table 00125)
 00h  7 BYTEs	signature "VBE/MGA"
 07h 10 BYTEs	??? (01h 01h 00h 00h 00h 00h 00h 00h 00h 07h)
 11h	WORD	BIOS version (high byte = major, low byte = one-digit minor)
 13h	DWORD	-> manufacturer name (ASCIZ "Matrox")
 17h	DWORD	-> ASCIZ card name
 1Bh	DWORD	-> ??? ASCIZ string (empty string on card examined)
 1Fh	DWORD	-> ASCIZ vendor name
 23h	DWORD	-> ASCIZ BIOS file base name
 27h	DWORD	-> PINS
 2Bh	WORD	video memory size in 64K units
 2Dh	DWORD	linear address of linear frame buffer
 31h	DWORD	linear address of MGA control aperture
 35h	WORD	PCI bus/device for card???
 37h 201 BYTEs	unused??? (cleared to 00h)

Format of Matrox PINS data (version 3.0):
Offset	Size	Description	(Table 00126)
 00h  2 BYTEs	signature ".A" (2Eh 41h)
 02h	BYTE	structure length (40h for v3.0)
 03h	BYTE	???
 04h	WORD	PINS version (high byte = major, low byte = minor)
 06h	WORD	date last programmed
 08h	WORD	number of times programmed
 0Ah	WORD	flags
 0Ch  8 BYTEs	ASCII serial number, three letters + five digits
 14h  8 BYTEs	???
 1Ch  4 BYTEs	ASCII card version
 20h	DWORD	PCB revision
 24h	BYTE	maximum RAMDAC frequency in MHz (less 100)
 25h	BYTE	maximum RAMDAC frequency???
 26h	BYTE	maximum RAMDAc frequency???
 27h	BYTE	???
 28h	BYTE	??? timing data?
 29h	BYTE	???
 2Ah	BYTE	???
 2Bh	BYTE	???
 2Ch	BYTE	???
 2Dh	BYTE	???
 2Eh	BYTE	???
 2Fh	BYTE	???
 30h  4 BYTEs	???
 34h	BYTE	???
 35h	BYTE	???
 36h	BYTE	???
 37h	BYTE	memory size in 64K units
 38h	BYTE	???
 39h	BYTE	???
 3Ah	BYTE	???
 3Bh	BYTE	???
 3Ch	BYTE	???
 3Dh	BYTE	???
 3Eh	BYTE	???
 3Fh	BYTE	checksum (to make sum of all bytes MOD 256 == 00h)

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1053 - INT 10 - Show Partner F/X v3.6 - START PRESENTATION

INT 10 - Show Partner F/X v3.6 - START PRESENTATION
	AH = 53h
	DS:DX -> ASCIZ name of presentation file (no path, extension forced to
		.PR2)
Return: ???
SeeAlso: AH=55h

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1055 - INT 10 - Show Partner F/X v3.6 - UNINSTALL

INT 10 - Show Partner F/X v3.6 - UNINSTALL
	AH = 55h
Return: FXSHOW.EXE removed from memory
SeeAlso: AH=53h

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105555BXAAAA - INT 10 - LIR - SET CONFIGURATION

INT 10 - LIR - SET CONFIGURATION
	AX = 5555h
	BX = AAAAh
	CL = new configuration flags (see #04118)
	CH > 0 new video adapter configuration (see #04121)
	   = 0 do not update video adapter configuration
	DL = new keyboard layout flags (see #04119)
	DH = new alphabet flags (see #04120)
Return: AX = A55Ah if installed
Program: LIR is a DOS/Windows 3.xx codepage support package develoved by
	  LABAS u.a.b. It supports several screen and printer codepages as
	  well as various keyboard layouts used in Lithuania.
	  Download at: ftp://ftp.labas.com/pub/drivers/language/lir422.zip
SeeAlso: AX=5555h/BX=BBBBh,INT 17/AX=5555h/BX=AAAAh

Bitfields for LIR configuration flags:
Bit(s)	Description	(Table 04118)
 7	program is active
 6	???
 5-3	code page
 2	Lithuanian???
 1	Russian???
 0	enable beeps
SeeAlso: #04119

Bitfields for LIR keyboard layout flags:
Bit(s)	Description	(Table 04119)
 7-5	keyboard layout
	100 QWERTY
	010 Lithuanian AZERTY
	001 Lithuanian ergonomic FZVPUJ
 4-3	reserved (0)
 2	Lithuanian keyboard???
 1	Russian keyboard???
 0	???
SeeAlso: #04118,#04120

Bitfields for LIR Alphabet flags:
Bit(s)	Description	(Table 04120)
 7-3	reserved (0)
 2	Lithuanian alphabetic symbol table???
 1	Russian alphabetic symbol table???
 0	reserved (0)
SeeAlso: #04118,#04119,#04121

Bitfields for LIR video adapter configuration:
Bit(s)	Description	(Table 04121)
 7	Hercules Graphics Card (HGC)
 6-5	reserved (0)
 4	VGA
 3	MCGA
 2	EGA
 1	CGA
 0	reserved (0)
Note:	multiple bits may be set if more than one video adapter is installed
SeeAlso: #04118

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105555BXBBBB - INT 10 - LIR - GET CONFIGURATION

INT 10 - LIR - GET CONFIGURATION
	AX = 5555h
	BX = BBBBh
Return: AX = magic signature A55Ah
	BX = version number (BH = major version, BL = minor version),
	      e.g. BX = 0410h for LIR v4.10, or BX = 0422h for LIR v4.22)
	CL = configuration flags (see #04118)
	CH = video adapter configuration (see #04121)
	DL = keyboard layout flags(see #04119)
	DH = alphabet flags (see #04120)
SeeAlso: AX=5555h/BX=AAAAh,INT 17/AX=5555h/BX=BBBBh

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1086 - INT 10 - ???

INT 10 - ???
	AH = 86h
Note:	called by Diamond Stealth64 Video STLTH64.VXD
SeeAlso: INT 2F/AX=4021h

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10A001 - INT 10 - ATI Mach64 BIOS - ???

INT 10 - ATI Mach64 BIOS - ???
	AX = A001h
	CL = ??? flags
	???
Return: AH = status
	    00h successful
	    01h failed
	???
SeeAlso: AX=A000h,AX=A002h

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10A002 - INT 10 - ATI Mach64 BIOS - ???

INT 10 - ATI Mach64 BIOS - ???
	AX = A002h
	CL = ??? (bits 2-0 may not be 000)
	CH = ??? (81h or ???)
	DX = segment of ??? (if CH=81h)
	???
Return: AH = status
	    00h successful
	    01h failed
	???
Note:	executes AX=A000h, then AX=A001h if A000h was successful
SeeAlso: AX=A000h,AX=A001h

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10A003 - INT 10 - ATI Mach64 BIOS - ???

INT 10 - ATI Mach64 BIOS - ???
	AX = A003h
	BX = ???
	???
Return: AH = status (00h successful)
	???
SeeAlso: AX=A000h,AX=A002h

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10A004 - INT 10 - ATI Mach64 BIOS - ???

INT 10 - ATI Mach64 BIOS - ???
	AX = A004h
	BX = video mode??? (0000-00FFh)
	DX = ??? (sent to some port [66ECh???] one bit at a time, high to low)
	???
Return: AH = status
	    00h successful
	    01h failed
	???
SeeAlso: AX=A000h,AX=A002h

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10A005 - INT 10 - ATI Mach64 BIOS - ???

INT 10 - ATI Mach64 BIOS - ???
	AX = A005h
	CL = ??? flags (bits 0,2, others?)
	???
Return: AH = status
	    00h successful
	    01h failed
	???
SeeAlso: AX=A000h,AX=A002h

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10A006 - INT 10 - ATI Mach64 BIOS - ???

INT 10 - ATI Mach64 BIOS - ???
	AX = A006h
	???
Return: AH = status
	    00h successful
	    01h failed
	???
SeeAlso: AX=A000h,AX=A002h

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10A007 - INT 10 - ATI Mach64 BIOS - GET ???

INT 10 - ATI Mach64 BIOS - GET ???
	AX = A007h
Return: AH = 00h (successful)
	AL = ??? (00h)
	BX = ??? (15A0h in examined BIOS)
	DX = segment of BIOS
SeeAlso: AX=A000h,AX=A002h

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10A008 - INT 10 - ATI Mach64 BIOS - GET ??? SIZE

INT 10 - ATI Mach64 BIOS - GET ??? SIZE
	AX = A008h
	CL = ??? flags
	???
Return: AH = 00h (successful)
	BX = size of ??? (0046h if CL bit 0 clear on entry)
SeeAlso: AX=A000h,AX=A009h

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10A009 - INT 10 - ATI Mach64 BIOS - GET ???

INT 10 - ATI Mach64 BIOS - GET ???
	AX = A009h
	DX:BX -> buffer for ???
	CL = ??? flags
	???
Return: AH = status
	    00h successful
		DX:BX buffer filled
	    01h failed
	???
SeeAlso: AX=A000h,AX=A008h

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10A00A - INT 10 - ATI Mach64 BIOS - GET ???

INT 10 - ATI Mach64 BIOS - GET ???
	AX = A00Ah
Return: AH = 00h (successful)
	AL = ??? (01h)
	BX = ??? (5938h)
	CX = ??? (595Eh)
	DX = segment of BIOS
SeeAlso: AX=A000h,AX=A002h

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10A00B - INT 10 - ATI Mach64 BIOS - ???

INT 10 - ATI Mach64 BIOS - ???
	AX = A00Bh
	BX = ???
	CL = ??? flags
	???
Return: AH = status
	    00h successful
	    01h failed
	???
SeeAlso: AX=A000h,AX=A002h

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10A00D - INT 10 - ATI Mach64 BIOS - GET SLEEP MODE

INT 10 - ATI Mach64 BIOS - GET SLEEP MODE
	AX = A00Dh
Return: AH = 00h (successful)
	CL = current power mode
	    00h normal operation
	    01h standby
	    02h suspend
	    03h off
SeeAlso: AX=A00Ch,AX=4F10h/BL=02h
SeeAlso: AX=A00Ch,AX=A00Dh"Rage128"AX=4F10h/BL=02h

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10A00E - INT 10 - ATI Mach64 BIOS - SET ???

INT 10 - ATI Mach64 BIOS - SET ???
	AX = A00Eh
	CL = ??? (00h-03h)
Return: AH = status
	    00h successful
	    01h failed
Notes:	CL zero/nonzero are treated differently
	NOP in All-in-Wonder 128 BIOS
SeeAlso: AX=A000h,AX=A00Fh

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10A00F - INT 10 - ATI Mach64 BIOS - GET ???

INT 10 - ATI Mach64 BIOS - GET ???
	AX = A00Fh
Return: AH = 00h (successful)
	CL = ??? (00h-03h, read from PORT 42ECh)
Note:	NOP in All-in-Wonder 128 BIOS
SeeAlso: AX=A000h,AX=A00Eh

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10A010 - INT 10 - ATI Mach64 BIOS - ???

INT 10 - ATI Mach64 BIOS - ???
	AX = A010h
	CL = ???  (80h/other)
	???
Return: AH = status
	    00h successful
	    01h failed
	???
Note:	NOP in All-in-Wonder 128 BIOS
SeeAlso: AX=A000h,AX=A002h

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10A011 - INT 10 - ATI Mach64 BIOS - GET ???

INT 10 - ATI Mach64 BIOS - GET ???
	AX = A011h
Return: AH = 00h (successful)
	BL = ??? (1Fh)
	BH = ??? (0Fh)
	CL = ??? (00h)
	CH = ??? (0Fh)
	DX = ??? (00FFh)
Note:	NOP in All-in-Wonder 128 BIOS
SeeAlso: AX=A000h,AX=A010h

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1375 - INT 13 - ???

INT 13 - ???
	AH = 75h
	???
Return: AH = ???
	???
Note:	intercepted by PC-Cache (v5.1 only)

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1376 - INT 13 - ???

INT 13 - ???
	AH = 76h
	???
Return: AH = ???
	???
Note:	intercepted by PC-Cache (v5.1 only)

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13BF00 - INT 13 - Mylex/Adaptec??? - ???

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

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13FF - INT 13 - EZ-Drive - INSTALLATION CHECK

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"

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1405 - INT 14 - PhysTechSoft PTS ROM-DOS - SET PACKET

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

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1406 - INT 14 - PhysTechSoft PTS ROM-DOS - GET PACKET

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

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1483 - INT 14 - SYSTEM FOSSIL

INT 14 - SYSTEM FOSSIL
	AH = 83h
SeeAlso: AH=7Eh

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14AD - INT 14 - IBM SurePath BIOS - Officially "Private" Function

INT 14 - IBM SurePath BIOS - Officially "Private" Function
	AH = ADh
SeeAlso: AH=AEh"IBM",AH=AFh"IBM"

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14AE - INT 14 - IBM SurePath BIOS - Officially "Private" Function

INT 14 - IBM SurePath BIOS - Officially "Private" Function
	AH = AEh
SeeAlso: AH=ADh"IBM",AH=AFh"IBM"

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14AF - INT 14 - IBM SurePath BIOS - Officially "Private" Function

INT 14 - IBM SurePath BIOS - Officially "Private" Function
	AH = AFh
SeeAlso: AH=ADh"IBM",AH=AEh"IBM"

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1507 - INT 15 - IBM SurePath BIOS - Officially "Private" Function

INT 15 - IBM SurePath BIOS - Officially "Private" Function
	AH = 07h
SeeAlso: AH=08h"IBM"

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1509 - INT 15 - IBM BIOS - RESERVED FOR PCMCIA SYSTEM RESOURCE TABLE ACCESS

INT 15 - IBM BIOS - RESERVED FOR PCMCIA SYSTEM RESOURCE TABLE ACCESS
	AH = 09h
	no further details available
SeeAlso: AH=08h"IBM"

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153D - INT 15 - IBM SurePath BIOS - Officially "Private" Function

INT 15 - IBM SurePath BIOS - Officially "Private" Function
	AH = 3Dh
SeeAlso: AH=07h"IBM",AH=3Eh"IBM"

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153E - INT 15 - IBM SurePath BIOS - Officially "Private" Function

INT 15 - IBM SurePath BIOS - Officially "Private" Function
	AH = 3Eh
SeeAlso: AH=3Dh"IBM",AH=3Fh"IBM"

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153F - INT 15 - IBM SurePath BIOS - Officially "Private" Function

INT 15 - IBM SurePath BIOS - Officially "Private" Function
	AH = 3Fh
SeeAlso: AH=07h"IBM",AH=3Eh"IBM"

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154E - INT 15 - IBM SurePath BIOS - Officially "Private" Function

INT 15 - IBM SurePath BIOS - Officially "Private" Function
	AH = 4Eh
SeeAlso: AH=07h"IBM",AH=3Eh"IBM"

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1554 - INT 15 - IBM SurePath BIOS - Officially "Private" Function

INT 15 - IBM SurePath BIOS - Officially "Private" Function
	AH = 54h
SeeAlso: AH=07h"IBM",AH=3Eh"IBM"

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156700BXFFFF - INT 15h - Arabic/Hebrew MS-DOS 5.0???+ - INSTALLATION CHECK

INT 15h - Arabic/Hebrew MS-DOS 5.0???+ - INSTALLATION CHECK
	AX = 6700h
	BX = FFFFh
Return: BX = FFFFh (Arabic/Hebrew MS-DOS not installed)
	BX = version (e.g. 0101h for Arabic/Hebrew MS-DOS 5.0)
Note:	This call is made by the SK_HGC.COM TSR for HGC and HGC/RAMFont
	  graphics adapters to ensure it runs on the correct version of
	  Arabic or Hebrew MS-DOS.
	The function is probably implemented in the ARABIC.COM/HEBREW.COM
	  driver.
	Arabic/Hebrew versions of MS-DOS 3.3 existed, but no details are
	  available.
SeeAlso: AX=67C3h,INT 2F/AX=AD41h

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1567C3CX1Bh - INT 15h - Arabic/Hebrew MS-DOS 5.0???+ - HGC & HGC/RAMFont support???

INT 15h - Arabic/Hebrew MS-DOS 5.0???+ - HGC & HGC/RAMFont support???
	AX = 67C3h
	CX = 1Bh
	CS|DS???:SI -> buffer
Return: ES:DI -> ???
	AX = ???
Program: The SK_HGC.COM TSR is used to support operation of ARABIC.COM/
	  HEBREW.COM with the Hercules Graphic Card series of video adapters.
	  It is provided for compatibility with ADOS 3.30/HDOS 3.30 only.
	  This file must be loaded immediately after ARABIC.COM/HEBREW.COM
	  to insure correct operation with these devices.
Notes:	This call is made by the SK_HGC.COM TSR for HGC and HGC/RAMFont
	  graphics adapters when it has successfully detected an Arabic/Hebrew
	  issue of MS-DOS via INT15h/6700h/BX=FFFFh to ensure it runs on the
	  correct version of Arabic or Hebrew MS-DOS.
	At some unknown offset in the buffer it contains a flag indicating
	  if a HGC or HGC/RAMFont adapter is present or not.
	ARABIC/HEBREW does not operate with Monochrome Display Adapters (MDA)
	  and the Hercules Graphic Card Plus (HGC+). ARABIC/HEBREW does operate
	  with Hercules Graphic Card (HGC) with a burnt-in ROM/EPROM font (many
	  HGC cards, even the highly integrated ones, allow for this kind of
	  user customization), though this is not officially supported.
	In some pre-1987 IBM XT/AT and compatibles, the Hercules Graphic
	  Card Plus operates like a MDA card. This hardware limitation
	  prevents ARABIC/HEBREW from running on this combination of hardware.
SeeAlso: AX=6700h

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157002 - INT 15 U - Tandy 1000 Model ??? - GET ROM PAGE

INT 15 U - Tandy 1000 Model ??? - GET ROM PAGE
	AX = 7002h
Return: AL = ROM page mapped at 0E0000h (0-6 (13?))
Note:	some Tandy machines have DOS and DeskMate in a 512k paged ROM.	The
	  BIOS uses this call to determine what ROM page is mapped in the 64k
	  segment at 0E0000h.
	the 1000TL has 8 64k ROM pages; page 7 is permanently mapped at
	  0F0000h.  There may be 16 32k ROM pages on other systems.
SeeAlso: AX=7003h,INT E0"DeskMate"

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157003 - INT 15 U - Tandy 1000 Model ??? - SET ROM PAGE

INT 15 U - Tandy 1000 Model ??? - SET ROM PAGE
	AX = 7003h
	DL = ROM page to be mapped at 0E0000h (0-6 (13?))
Return: CF clear if valid ROM page specified
Note:	Some Tandy machines have DOS and DeskMate in a 512k paged ROM.	The
	  BIOS uses this call to map ROM pages in the 64k segment at 0E0000h.
	The 1000TL has 8 64k ROM pages; page 7 is permanently mapped at
	  0F0000h.  There may be 16 32k ROM pages on other systems.
SeeAlso: AX=7002h,INT E0"DeskMate"

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1584--DX0002 - INT 15 - AMIGATSR - INSTALLATION CHECK

INT 15 - AMIGATSR - INSTALLATION CHECK
	AH = 84h
	DX = 0002h
Return: AX = 1234h if installed
Program: AMIGATSR is a serial-port driver for using an Amiga gamepad on a PC
SeeAlso: AH=84h/DX=0002h"MULTIJOY"

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1584--DX0002 - INT 15 - MULTIJOY - INSTALLATION CHECK

INT 15 - MULTIJOY - INSTALLATION CHECK
	AH = 84h
	DX = 0002h
Return: AX = 4321h if installed
SeeAlso: AH=84h/DX=0002h"AMIGATSR",AH=84h/DX=0003h"MULTIJOY"

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1584--DX0003 - INT 15 - MULTIJOY - GET ACTIVE JOYSTICK

INT 15 - MULTIJOY - GET ACTIVE JOYSTICK
	AH = 84h
	DX = 0003h
Return: AX = number of the currently-active joystick device
	BX = device classification (see #04098)
SeeAlso: AH=84h/DX=0002h"MULTIJOY"
 !!! more info to follow

Bitfields for MULTIJOY device classification:
Bit(s)	Description	(Table 04098)
 15	device connected and ready
 14	no buttons (overrides bits 12-9)
 13	no axes (overrides bits 8-5)
 12-9	number of buttons, less one
 8-5	number of axes, less one
 4	digital device rather than analog
 3-0	device type
	0000 keyboard emulating joystick
	0001 gamepad
	0010 joystick
	0011 steering wheel
	0100 flight yoke
	0101 mouse emulating joystick
	0110 trackball emulating joystick
	0111 GlidePoint (touchpad) emulating joystick
	1000 touchscreen emulating joystick
	1001 steering wheel
	1010 light pen emulating joystick
	1011 speech recognition emulating joystick
	1100 TV remote emulating joystick
	1101 network/Internet remote control
	1110 PC software-controlled (demo mode, etc.)
	1111 other device

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1584--DX0004 - INT 15 - MULTIJOY - SELECT JOYSTICK

INT 15 - MULTIJOY - SELECT JOYSTICK
	AH = 84h
	DX = 0004h
	BX = number of the joystick device to make active
Return: ???
SeeAlso: AH=84h/DX=0003h"MULTIJOY"

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15B001CX5354 - INT 15 - Stac STACKER - INSTALLATION CHECK

INT 15 - Stac STACKER - INSTALLATION CHECK
	AX = B001h
	CX = 5354h ('ST')
	DX = 4143h ('AC')
Return: AX = 4F4Bh ('OK') if installed
Note:	this function is encapsulated in Stac's STACKER.LIB C library; it is
	  called by Novell DOS 7+ NWCACHE v1.01, which makes use of this
	  library

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15D042BL00 - INT 15 R - Intel Pentium Pro BIOS UPDATE - INSTALLATION CHECK

INT 15 R - Intel Pentium Pro BIOS UPDATE - INSTALLATION CHECK
	AX = D042h
	BL = 00h
Return: CF clear if successful
	CF set on error
	AH = status
	    00h successful
		EBX:ECX = signature "INTELPEP"
		EDX = BIOS update loader version
		SI = number of 2K update blocks which can be recorded in NVRAM
	    86h not implemented
	AL = OEM error (if AH is not 00h or 86h, otherwise undefined)
	    00h successful
Program: the Pentium Pro BIOS update allows the system BIOS or other software
	  to install a microcode patch into the Pentium Pro processor
Notes:	this API must be called from actual real mode, not V86 mode
	at least 32K stack space must be available when this function is called
SeeAlso: AX=D042h/BL=01h,AX=D042h/BL=02h,AX=D042h/BL=03h
SeeAlso: @xxxxh:xxxxh"Intel BIOS Upgrade",MSR 00000079h

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15D042BL01 - INT 15 R - Intel Pentium Pro BIOS UPDATE - WRITE BIOS UPDATE AREA

INT 15 R - Intel Pentium Pro BIOS UPDATE - WRITE BIOS UPDATE AREA
	AX = D042h
	BL = 01h
	ES:DI -> microcode update block (see #00533)
	CX,DX,SI = segments of three 64K scratchpad areas for BIOS use
Return: CF clear if successful
	CF set on error
	AH = status (see #00532)
	AL = OEM error (if AH is not 00h or 86h, otherwise undefined)
	    00h successful
Notes:	a microcode update may also be initiated by a WRMSR instruction
	  with ECX=0079h, EDX=00000000h, and EAX=linear address of update
	  block (see #00533)
	at least 32K stack space must be available when this function is called
SeeAlso: AX=D042h/BL=00h,AX=D042h/BL=02h,AX=D042h/BL=03h,MSR 00000079h

(Table 00532)
Values for Pentium Pro BIOS update status:
 00h	successful
 86h	not implemented
 90h	unable to erase NVRAM device
 91h	unable to write to NVRAM device
 92h	unable to read storage
 93h	NVRAM is full
 94h	specified processor stepping is not present in system
 95h	invalid header or loader version
 96h	wrong checksum in header
 97h	processor rejected the update
 98h	the same or a more recent update is already stored
 99h	update block number was out of range

Format of Pentium Pro microcode update block:
Offset	Size	Description	(Table 00533)
 00h	DWORD	update header version number (currently 00000001h)
		FFFFFFFFh = unused block
 04h	DWORD	revision number of this microcode update
 08h	DWORD	update creation date, as BCD mmddyyyy (month,day,year)
 0Ch	DWORD	family/model/stepping of processor to which update applied
		(same value as returned by CPUID instruction)
 10h	DWORD	checksum (used to force sum of all 512 DWORDs of the update
		block to 00000000h)
 14h	DWORD	revision number of loader needed to install update
		(currently 00000001h)
 18h 24 BYTEs	reserved for future expansion
 30h 2000 BYTEs	encrypted microcode data
SeeAlso: MSR 00000079h,OPCODE "CPUID"

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15D042BL02 - INT 15 R - Intel Pentium Pro BIOS UPDATE - BIOS UPDATE CONTROL

INT 15 R - Intel Pentium Pro BIOS UPDATE - BIOS UPDATE CONTROL
	AX = D042h
	BL = 02h
	BH = function
	    01h enable update loading at initialization time
	    02h check whether update loading is enabled
	CX,DX,SI = segments of three 64K scratchpad areas for BIOS use
Return: CF clear if successful
	CF set on error
	AH = status (see #00532)
	    00h successful
		BL = enabled/disabled flag
	    86h not implemented
	AL = OEM error (if AH is not 00h or 86h, otherwise undefined)
	    00h successful
Notes:	this API must be called from actual real mode, not V86 mode
	at least 32K stack space must be available when this function is called
	there is no call to disable update loading due to security risks; the
	  BIOS setup can disable loading
SeeAlso: AX=D042h/BL=00h,AX=D042h/BL=02h,AX=D042h/BL=03h

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15D042BL03 - INT 15 R - Intel Pentium Pro BIOS UPDATE - READ BIOS UPDATE AREA

INT 15 R - Intel Pentium Pro BIOS UPDATE - READ BIOS UPDATE AREA
	AX = D042h
	BL = 03h
	ES:DI -> buffer for microcode update block (see #00533)
	ECX = two real-mode 64K scratchpad segments (upper and lower words)
	DX = segment of 64K scratchpad area for BIOS use
	SI = zero-based index number of update block to retrieve
Return: CF clear if successful
	CF set on error
	AH = status
	    00h successful
		ES:DI buffer filled with 2048-byte update block
	    86h not implemented
	AL = OEM error (if AH is not 00h or 86h, otherwise undefined)
	    00h successful
Program: the Pentium Pro BIOS update allows the system BIOS or other software
	  to install a microcode patch into the Pentium Pro processor
Notes:	this API must be called from actual real mode, not V86 mode
	at least 32K stack space must be available when this function is called
SeeAlso: AX=D042h/BL=00h,AX=D042h/BL=01h,AX=D042h/BL=03h

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15D824 - INT 15 - Compaq EISA System ROM 04/08/93 - ???

INT 15 - Compaq EISA System ROM 04/08/93 - ???
	AX = D824h
	CX = ???
	DS:SI -> ASCIZ string containing ???
Return: CF clear if successful
	    AH = 00h
	    CX = ???
	CF set on error
	    AH = error code
		87h ??? failed
		88h ???
Note:	these functions are only available if ??? from keyboard controller
	  command C0h

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15D825 - INT 15 - Compaq EISA System ROM 04/08/93 - ???

INT 15 - Compaq EISA System ROM 04/08/93 - ???
	AX = D825h
	CX = ???
	SI = ???
	DI = ???
	???
Return: CF clear if successful
	    AH = 00h
	    CX = ???
	CF set on error
	    AH = error code
		87h ??? failed
		88h ???
		    CX = ???
Note:	these functions are only available if ??? from keyboard controller
	  command C0h

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15D826 - INT 15 - Compaq EISA System ROM 04/08/93 - ???

INT 15 - Compaq EISA System ROM 04/08/93 - ???
	AX = D826h
	BX = ???
	CX = size of buffer in bytes
	DS:SI -> buffer for ???
	???
Return: CF clear if successful
	    AH = 00h
	    CX = ???
	CF set on error
	    AH = error code
		87h ??? failed
		88h ???
Note:	these functions are only available if ??? from keyboard controller
	  command C0h

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15DA - INT 15 U - AMI PCI BIOS v1.00.05.AX1 - ???

INT 15 U - AMI PCI BIOS v1.00.05.AX1 - ???
	AH = DAh
	AL = function (00h-08h,12h,14h,15h,19h,88h-8Eh,92h,99h)
	other registers vary by function
Return: CF clear if successful
	    varies by function
	CF set on error
	    AH = error code (86h unsupported [sub]function)
Note:	functions not listed above always return CF set and AH=86h; in the
	  examined BIOS, functions 02h-04h,06h-07h,89h-8Bh, and 8Dh also
	  always return CF set and AH=86h
SeeAlso: AX=DA00h,AX=DA01h,AX=DA88h,AX=DA99h,AX=DB00h

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15DA05 - INT 15 U - AMI PCI BIOS - GET ??? AND BIOS REVISION STRINGS

INT 15 U - AMI PCI BIOS - GET ??? AND BIOS REVISION STRINGS
	AX = DA05h
	ES:SI -> 8-byte buffer for ??? and BIOS revision strings
Return: CF clear
	ES:SI buffer filled
	AL = 00h
	CX = ??? (0000h)
Notes:	for BIOS v1.00.05.AX1, the ??? string is "IDNO" and the BIOS revision
	  string is "AX1 "
SeeAlso: AX=DA15h,AX=DB04h

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15DA08 - INT 15 U - AMI PCI BIOS - ???

INT 15 U - AMI PCI BIOS - ???
	AX = DA08h
	???
Return: CF clear if successful
	    ???
	CF set on error
	    AH = error code (86h unsupported subfunction)
Note:	in the examined v1.00.05.AX1 BIOS, this call always returns failure

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15DA12 - INT 15 U - AMI PCI BIOS - v1.00.05.AX1 - ???

INT 15 U - AMI PCI BIOS - v1.00.05.AX1 - ???
	AX = DA12h
	CL = subfunction
	    00h ???
	    01h	???
	    02h get ???
	    03h ???
	    04h ???
	???
Return: CF clear if successful
	    ???
	CF set on error
	    AH = error code (86h unsupported subfunction)
Desc:	??? performs various manipulations on system chipset registers
Notes:	subfunctions 00h and 01h are NOPs in protected and V86 modes due to
	  a test of MSW bit 0
	subfunctions 00h-02h always return success

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15DA14 - INT 15 U - AMI PCI BIOS - GET/SET ???

INT 15 U - AMI PCI BIOS - GET/SET ???
	AX = DA14h
	CL = subfunction
	    00h read
	    01h write
		DH = new value for ??? (00h-02h)
	DL = index of ??? (00h-03h, but not range-checked)
	???
Return: CF clear if successful
	    DH = current value of ??? if reading
	CF set on error
	    AH = error code (86h unsupported subfunction)
Note:	the values for indexes 00h and 01h are stored in CMOS RAM location 19h,
	  and the values for 02h and 03h are stored in location 36h
BUG:	the v1.00.05.AX1 BIOS range-checks DH on subfunction 00h instead of
	  subfunction 01h, even though DH is never used by subfunction 00h

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15DA15 - INT 15 U - AMI PCI BIOS - GET ??? AND BIOS REVISION STRINGS

INT 15 U - AMI PCI BIOS - GET ??? AND BIOS REVISION STRINGS
	AX = DA15h
	ES:DI -> 8-byte buffer for ??? and BIOS revision strings
Return: CF clear
	ES:DI buffer filled
	AL = 00h
Note:	for BIOS v1.00.05.AX1, the ??? string is "IDNO" and the BIOS revision
	  string is "AX1 "
SeeAlso: AX=DA05h,AX=DB04h

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15DA19 - INT 15 U - AMI PCI BIOS - GET/SET ???

INT 15 U - AMI PCI BIOS - GET/SET ???
	AX = DA19h
	CL = subfunction
	    00h get first ???
	    01h get second ???
	    02h set first ???
		BX = ???
		DX = ???
	    03h set second ???
		BX = ???
		DX = ???
Return: CF clear if successful
	    AX = 0000h
	    BX,DX = ??? (subfunctions 00h and 01h only)
	CF set on error
	    AH = error code (86h unsupported subfunction)
Note:	the first ??? is stored in CMOS RAM locations 1Bh-1Eh, the second in
	  locations 1Fh-22h in the v1.00.05.AX1 BIOS

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15DA88 - INT 15 U - AMI PCI BIOS - GET EXTENDED MEMORY SIZE

INT 15 U - AMI PCI BIOS - GET EXTENDED MEMORY SIZE
	AX = DA88h
Return: CF clear (successful)
	AX = 0000h
	CL:BX = extended memory size in KBytes
SeeAlso: AH=88h

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15DA8C - INT 15 U - AMI PCI BIOS - GET BIOS AND CHIPSET IDENTIFICATION

INT 15 U - AMI PCI BIOS - GET BIOS AND CHIPSET IDENTIFICATION
	AX = DA8Ch
	CL = subfunction
	    00h get BIOS version string
		ES:DI -> 12-byte buffer for version string
	    01h get chipset identification
		BL = what to retrieve
		    (00h host/PCI bridge,01h motherboard chipset)
		ES:DI -> 12-byte buffer for chipset identification (see #00543)
Return: CF clear if successful
	    ES:DI buffer filled
	CF set on error
	    AH = error code (86h unsupported subfunction)
Notes:	the v1.00.05.AX1 BIOS returns "1.00.05.AX1 " as its version string
	subfunction 01h returns the five bytes read from the PCI configuration
	  registers 00h-05h (see #00878), padded to 12 bytes with NULs
SeeAlso: AX=DB04h,PORT C000h"Neptune"

Format of AMI PCI BIOS chipset identification:
Offset	Size	Description	(Table 00543)
 00h	WORD	vendor ID (see #00732 at AX=B102h)
		8086h = Intel
 02h	WORD	device ID
		0484h (BL=01h)
		04A3h (BL=00h)
 04h	BYTE	low byte of PCI Command Register
 05h  7 BYTEs	unused (00h)

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15DA8E - INT 15 U - AMI PCI BIOS - ???

INT 15 U - AMI PCI BIOS - ???
	AX = DA8Eh
	???
Return: CF clear if successful
	    ???
	CF set on error
	    AH = error code (86h unsupported subfunction)
Note:	in the	v1.00.05.AX1 BIOS, this call always returns failure

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15DA92 - INT 15 U - AMI PCI BIOS - GET CPU TYPE AND SPEED

INT 15 U - AMI PCI BIOS - GET CPU TYPE AND SPEED
	AX = DA92h
Return: CF clear (successful)
	AL = CPU stepping (see also #00529 at INT 15/AH=C9h)
	AH = CPU model
	BL = CPU family (05h = Pentium, etc.)
	CX = external clock speed in MHz (BCD)
	    (0040h,0050h,0060h,0066h are possible return values on my
	      Pentium with the Intel "Neptune" chipset)
	EAX high word destroyed
Note:	90 MHz and faster Pentium CPUs can be configured to run at varying
	  multiples of the external clock speed, i.e. a typical 90 MHz Pentium
	  system will run the motherboard at 60 MHz (my 90 MHz Pentium returns
	  0060h in CX)
SeeAlso: AH=C9h

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15DA99 - INT 15 U - AMI PCI BIOS - GET/SET ??? FLAG

INT 15 U - AMI PCI BIOS - GET/SET ??? FLAG
	AX = DA99h
	CL = subfunction
	    00h check if ???
	    01h set ??? flag
	    02h clear ??? flag
Return: CF clear if successful
	    AH = ??? (00h,01h)
	    AL = 00h
	CF set on error
	    AH = error code (86h unsupported subfunction)
Note:	the flag is stored in bit 0 of CMOS RAM location 2Ch for BIOS
	  v1.00.05.AX1

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15E900 - INT 15 - PhysTechSoft PTS ROM-DOS - RESET WATCHDOG TIMER

INT 15 - PhysTechSoft PTS ROM-DOS - RESET WATCHDOG TIMER
	AX = E900h
Return: nothing

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15E901 - INT 15 - PhysTechSoft PTS ROM-DOS - WRITE DIAGNOSTIC CONTROL POINT CODE

INT 15 - PhysTechSoft PTS ROM-DOS - WRITE DIAGNOSTIC CONTROL POINT CODE
	AX = E901h
	CX = control point code (codes 000h-1FFh system backup)
Return: nothing
Note:	Provided by PhysTechSoft's PTS ROM-DOS and displayed by SETUP.COM.
SeeAlso: AX=E902h,INT 14/AH=05h"PTS ROM-DOS",INT 14/AH=06h"PTS ROM-DOS"

(Table 04093)
Values for PhysTechSoft PTS ROM-DOS control point code:
 ???	LOADER: Stack loaded
	LOADER: IVT initialized
	LOADER: Channel initialized
	LOADER: Local loading
	LOADER: Flash tested
	LOADER: Load from ROM
	LOADER: Load ROM comp.
	LOADER: Load from Flash
	LOADER: Load Flash co.
	BIOS: Chipset initialized
	BIOS: CPU tested
	BIOS: Stack tested
	BIOS: CRC tested
	BIOS: IVT initialized
	BIOS: Vars initialized
	BIOS: Resident init
	BIOS: Channel initialized
	BIOS: Memory tested
	BIOS: SRAM tested
	BIOS: EMS tested
	BIOS: PIC initialized
	BIOS: PPI initialized
	BIOS: DMA initialized
	BIOS: Timer initialized
	BIOS: Disks initialized
	BIOS: Boot loaded
	BIOS: Failed boot
	DOS: Job point: (up to 25???)
SeeAlso: #04091

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15E902 - INT 15 - PhysTechSoft PTS ROM-DOS - SET DIAGNOSTIC DOS ERROR FLAG

INT 15 - PhysTechSoft PTS ROM-DOS - SET DIAGNOSTIC DOS ERROR FLAG
	AX = E902h
	CX = diagnostic flag mask (see #04091,#04092)
Return: nothing
Note:	Provided by PhysTechSoft's PTS ROM-DOS and displayed by SETUP.COM.
	  DOS error flags can be assigned by application software.
SeeAlso: AX=E901h,INT 14/AH=05h"PTS ROM-DOS", INT 14/AH=06h"PTS ROM-DOS"

Bitfields for PhysTechSoft PTS ROM-DOS BIOS error flags:
Bit(s)	Description	(Table 04091)
 ???	Processor test failed.
	Stack test failed.
	BIOS code damaged.
	Conventional memory test failed.
	SRAM test failed.
	EMS test failed.
	Boot-sector damaged.
	Boot-sector read error.
	Loader setup damaged.
	BIOS setup damaged.
SeeAlso: #04092,#04093

Bitfields for PhysTechSoft PTS ROM-DOS LOADER error flags::
Bit(s)	Description	(Table 04092)
 ???	Processor test failed.
	Loader code damaged.
	Loader code in RAM damaged.
	Loader setup in flash-memory damaged.
	BIOS setup in flash-memory damaged.
	BIOS offset in flash-memory field damaged.
	BIOS size in flash-memory field damaged.
	BIOS in flash-memory damaged.
	BIOS in ROM damaged.
	Last operation field damaged.
	Channel error.
	Setup in flash-memory damaged.
	Loading BIOS from control channel failed.
	Loading DOS from control channel failed.
SeeAlso: #04091

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15E903 - INT 15 - PhysTechSoft PTS ROM-DOS - WRITE-ENABLE FLASH-DISK

INT 15 - PhysTechSoft PTS ROM-DOS - WRITE-ENABLE FLASH-DISK
	AX = E903h
Return: nothing
Note:	Enabling writing on Flash disk can lead to corruption of EMS disk info.
SeeAlso: AX=E904h,AX=E905h

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15E904 - INT 15 - PhysTechSoft PTS ROM-DOS - WRITE-PROTECT FLASH-DISK

INT 15 - PhysTechSoft PTS ROM-DOS - WRITE-PROTECT FLASH-DISK
	AX = E904h
Return: nothing
SeeAlso: AX=E903h,AX=E905h

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15E905 - INT 15 - PhysTechSoft PTS ROM-DOS - WRITE IMAGE OF BIOS TO FLASH-MEMORY

INT 15 - PhysTechSoft PTS ROM-DOS - WRITE IMAGE OF BIOS TO FLASH-MEMORY
	AX = E905h
	DS:SI -> buffer
Return: nothing
SeeAlso: AX=E903h,INT 14/AH=05h"PTS ROM-DOS",INT 14/AH=06h"PTS ROM-DOS"

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15E906 - INT 15 - PhysTechSoft PTS ROM-DOS - READ SETUP INFORMATION FROM FLASH-DISK

INT 15 - PhysTechSoft PTS ROM-DOS - READ SETUP INFORMATION FROM FLASH-DISK
	AX = E906h
	DS:SI -> buffer
Return:	AL = error code (00h = no error, 01h = setup information not found)
SeeAlso: AX=E907h,INT 14/AH=05h"PTS ROM-DOS",INT 14/AH=06h"PTS ROM-DOS"

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15E907 - INT 15 - PhysTechSoft PTS ROM-DOS - WRITE SETUP INFORMATION ON FLASH-DISK

INT 15 - PhysTechSoft PTS ROM-DOS - WRITE SETUP INFORMATION ON FLASH-DISK
	AX = E907h
	DS:SI -> buffer
Return:	nothing
SeeAlso: AX=E906h

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15E908 - INT 15 - PhysTechSoft PTS ROM-DOS - SET BREAKPOINT

INT 15 - PhysTechSoft PTS ROM-DOS - SET BREAKPOINT
	AX = E908h
	CL = flags
	    bit 1: =0 operate in one-fold mode
		   =1 operate in many-fold mode
	    bit 0: =0 send debug information to control channel
		   =1 activate handler
	ES:SI = breakpoint address
	DX:DI = handler address
Return: AH = error code
	    00h no error
	    01h incorrect parameter
	    02h no room in breakpoint table
SeeAlso: AX=E909h,INT 14/AH=05h"PTS ROM-DOS",INT 14/AH=06h"PTS ROM-DOS"

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15E909 - INT 15 - PhysTechSoft PTS ROM-DOS - REMOVE BREAKPOINT

INT 15 - PhysTechSoft PTS ROM-DOS - REMOVE BREAKPOINT
	AX = E909h
	ES:SI = breakpoint address
Return:	AH = error code
	    00h no error
	    01h incorrect parameter
SeeAlso: AX=E908h,INT 14/AH=05h"PTS ROM-DOS",INT 14/AH=06h"PTS ROM-DOS"

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160600 - INT 16 - AAKEYS - GET NEXT KEYBOARD EVENT

INT 16 - AAKEYS - GET NEXT KEYBOARD EVENT
	AX = 0600h
Return:	CF clear if successful
	    AL = next keyboard event in event buffer, FFh if buffer overflowed
	CF set on error
	    AL = 00h buffer empty
	BX destroyed
Program: AAKEYS is a TSR by Anthony Appleyard which records keyboard scan
	  codes in a 256-byte buffer in addition to any normal processing which
	  takes place
Note:	the installation check consists of calling INT 16/AX=06xxh (where 'xx'
	  is any subfunction other than those listed here) and testing whether
	  AX=BEEFh on return
SeeAlso: AX=0601h,AX=0602h,AX=0603h,AX=0604h

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160601 - INT 16 - AAKEYS - EMPTY KEY-EVENT BUFFER

INT 16 - AAKEYS - EMPTY KEY-EVENT BUFFER
	AX = 0601h
Return:	nothing
SeeAlso: AX=0600h,AX=0602h,AX=0603h,AX=0604h

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160602 - INT 16 - AAKEYS - DISABLE AAKEYS

INT 16 - AAKEYS - DISABLE AAKEYS
	AX = 0602h
Return:	AX,DX destroyed
Desc:	restores INT 09 and INT 16 and clears the TSRs signature byte
SeeAlso: AX=0600h,AX=0601h,AX=0603h,AX=0604h

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160603 - INT 16 - AAKEYS - GET KEY-EVENT BUFFER

INT 16 - AAKEYS - GET KEY-EVENT BUFFER
	AX = 0603h
Return:	ES:BX -> 256-byte circular key-event buffer
	ES:[AX] = offset of head of buffer
	ES:[AX+1] = offset of tail of buffer
SeeAlso: AX=0600h,AX=0601h,AX=0602h,AX=0604h

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160604 - INT 16 - AAKEYS - EMPTY BIOS KEYBOARD BUFFER

INT 16 - AAKEYS - EMPTY BIOS KEYBOARD BUFFER
	AX = 0604h
Return:	AX destroyed
SeeAlso: AX=0600h,AX=0601h,AX=0602h,AX=0603h

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1667 - INT 16 - Doorway v2.x+ - INSTALLATION CHECK / REDIRECTION CONTROLa

INT 16 - Doorway v2.x+ - INSTALLATION CHECK / REDIRECTION CONTROLa
	AH = 67h
	AL = Doorway mode
	    00h turn off DOS redirection
	    01h turn on DOS redirection
Return: AH = 80h if Doorway is actively redirecting output
	    AL = 80h if Doorway was already in requested mode
Program: Doorway is a program by Marshall Dudley which allows most DOS programs
	  to run as a BBS door without modification
Note:	to perform an installation check without changing the redirection
	  state, if is necessary to restore the original mode if AL was not
	  80h on return
SeeAlso: INT 10/AH=BBh"Doorway"

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16FF--BH00 - INT 16 - FREEZE.COM - INSTALLATION CHECK

INT 16 - FREEZE.COM - INSTALLATION CHECK
	AH = FFh
	BH = 00h
Return: BH = FFh if installed
Program: FREEZE is a PC Magazine utility

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16FF9D - INT 16 U - PC Tools v8+ CPTASK, VSAFE - ???

INT 16 U - PC Tools v8+ CPTASK, VSAFE - ???
	AX = FF9Dh
	ES:BX -> ??? word
Return: ???
Note:	if ES is non-zero, the word pointed at by ES:BX determines whether the
	  ??? flag is cleared (word = 0000h) or set (word is nonzero).	The
	  flag is always cleared if ES=0000h.

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1703 - INT 17 - IBM SurePath BIOS - Officially "Private" Function

INT 17 - IBM SurePath BIOS - Officially "Private" Function
	AH = 03h
SeeAlso: AH=04h"IBM",AH=05h"IBM"

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1704 - INT 17 - IBM SurePath BIOS - Officially "Private" Function

INT 17 - IBM SurePath BIOS - Officially "Private" Function
	AH = 04h
SeeAlso: AH=03h"IBM",AH=05h"IBM"

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1705 - INT 17 - IBM SurePath BIOS - Officially "Private" Function

INT 17 - IBM SurePath BIOS - Officially "Private" Function
	AH = 05h
SeeAlso: AH=03h"IBM",AH=04h"IBM"

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170B - INT 17 - IBM SurePath BIOS - Officially "Private" Function

INT 17 - IBM SurePath BIOS - Officially "Private" Function
	AH = 0Bh
SeeAlso: AH=03h"IBM",AH=0Ch"IBM"

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170C - INT 17 - IBM SurePath BIOS - Officially "Private" Function

INT 17 - IBM SurePath BIOS - Officially "Private" Function
	AH = 0Ch
SeeAlso: AH=0Bh"IBM",AH=0Dh"IBM"

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170D - INT 17 - IBM SurePath BIOS - Officially "Private" Function

INT 17 - IBM SurePath BIOS - Officially "Private" Function
	AH = 0Dh
SeeAlso: AH=0Ch"IBM",AH=0Eh"IBM"

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170E - INT 17 - IBM SurePath BIOS - Officially "Private" Function

INT 17 - IBM SurePath BIOS - Officially "Private" Function
	AH = 0Eh
SeeAlso: AH=03h"IBM",AH=0Dh"IBM",AH=80h"IBM"

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1780 - INT 17 - IBM SurePath BIOS - Officially "Private" Function

INT 17 - IBM SurePath BIOS - Officially "Private" Function
	AH = 80h
SeeAlso: AH=03h"IBM",AH=0Bh"IBM"

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1A04--CX4555 - INT 1A - CheckIt Year 2000 Fix v2.06 - INSTALLATION CHECK

INT 1A - CheckIt Year 2000 Fix v2.06 - INSTALLATION CHECK
	AH = 04h
	CX = 4555h ('EU')
	DX = 524Fh ('RO')
	BX = 0000h
Return: BX <> 0000h if installed
	    BX = major/minor/sub version (2068h = version 2.06.8)
Program: CheckIt is a TSR by Eurosoft (UK) Ltd. which corrects some Y2K-related
	  RTC bugs

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20----Vx3048 - INT 20 P - Frontier Technologies ??? - VxD SERVICES

INT 20 P - Frontier Technologies ??? - VxD SERVICES
	VxD = 3048h
Note:	the desired VxD and service number are identified by the data
	  immediately following the INT 20 instruction, as in:
		INT	20h
		DW	service number
		DW	VxD identifier
SeeAlso: INT 2F/AX=1684h"DEVICE API",INT 30"Windows",#01265,#01335

(Table 01335)
Values for ??? (VxD ID 3048h) service number:
 00h	get version???
 03h	???
	called with 5 DWORDs on stack, returns EAX=???, ECX nonzero on error
 04h	???
	called with DWORD on stack, returns EAX=???, ECX nonzero on error
 06h	???
	called with DWORD on stack, returns EAX=???, ECX nonzero on error
 07h	???
	called with 3 DWORDs on stack, returns EAX=???, ECX nonzero on error
 0Bh	???
	called with 2 DWORDs on stack, returns EAX=???, ECX nonzero on error
 0Ch	???
	called with 2 DWORDs on stack, returns EAX=???, ECX nonzero on error
 0Dh	???
	called with 6 DWORDs on stack, returns EAX=???, ECX nonzero on error
 1Ah	???
	called with 3 DWORDs on stack
SeeAlso: #01336

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20----Vx3049 - INT 20 P - Frontier Technologies ??? - VxD SERVICES

INT 20 P - Frontier Technologies ??? - VxD SERVICES
	VxD = 3049h
Note:	the desired VxD and service number are identified by the data
	  immediately following the INT 20 instruction, as in:
		INT	20h
		DW	service number
		DW	VxD identifier
SeeAlso: INT 2F/AX=1684h"DEVICE API",INT 30"Windows",#01265,#01336

(Table 01336)
Values for ??? (VxD ID 3049h) service number:
 00h	get version???
 1Dh	???
	called with 2 DWORDs on stack; returns EAX=???, ECX nonzero on error
 1Eh	???
	called with 6 DWORDs on stack; returns EAX=???, ECX nonzero on error
SeeAlso: #01335

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2130FFCX4445 - INT 21 - DESQ??? - INSTALLATION CHECK

INT 21 - DESQ??? - INSTALLATION CHECK
	AX = 30FFh
	CX = 4445h ("DE")
	DX = 5351h ("SQ")
Return: BH = 05h if installed
	???
Note:	called by DUBLDISK.COM v2.6; this function is not supported by
	  DESQview, so it may be for DESQview's precursor DESQ.
SeeAlso: AX=4404h"DUBLDISK"

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2137A6BX6A6D - INT 21 - XPACK v1.65 - GET TEMPORARY DIRECTORY NAME

INT 21 - XPACK v1.65 - GET TEMPORARY DIRECTORY NAME
	AX = 37A6h
	BX = 6A6Dh ('jm')
Return: AX = 0000h
	DS:DX -> name of temporary directory
Program: XPACK is a transparent file compressor/decompressor by JauMing Tseng
SeeAlso: AX=37A0h/BX=6A6Dh,AX=37A7h/BX=6A6Dh

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2137A7BX6A6D - INT 21 - XPACK v1.65 - SET TEMPORARY DIRECTORY NAME

INT 21 - XPACK v1.65 - SET TEMPORARY DIRECTORY NAME
	AX = 37A7h
	BX = 6A6Dh ('jm')
	DS:DX -> ASCIZ name of temporary directory (max 64 chars)
Return: AX = 0000h
Note:	the specified directory name must include a drive letter and end with
	  a backslash (e.g. 'c:\dos\',0)
SeeAlso: AX=37A0h/BX=6A6Dh,AX=37A6h/BX=6A6Dh

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213F - INT 21 U - IFSHLP.SYS - GET ENTRY POINT

INT 21 U - IFSHLP.SYS - GET ENTRY POINT
	AH = 3Fh
	BX = file handle for device "IFS$HLP$"
	CX = 0008h (size of buffer in bytes)
	DS:DX -> buffer for entry point record (see #01415)
Return: CF clear if successful
	    AX = number of bytes actually read (0 if at EOF before call)
	CF set on error
	    AX = error code (05h,06h) (see #01680 at AH=59h/BX=0000h)
Program: IFSHLP.SYS is a support driver for Microsoft Windows for Workgroups
SeeAlso: AX=4402h"IFSHLP"

Format of IFSHLP.SYS entry point record:
Offset	Size	Description	(Table 01415)
 00h  4 BYTEs	(call) required signature if called via IOCTL
			70h E9h 34h 37h for Windows 3.11
			70h E9h 35h 37h for Windows 3.11
		(ret) signature 34h 37h 70h EFh (Windows 3.11)
		(ret) signature 35h 37h 70h EFh (Windows95)
 04h	DWORD	(ret) pointer to FAR call entry point (see #01416)

(Table 01416)
Call IFSHLP.SYS entry point with:
	STACK:	WORD	function number (00h-0Ch)
			00h get ??? data
			01h set interrupt intercepts (trap)
			02h remove interrupt intercepts (untrap)
			03h ??? LPT2
			04h ??? LPT1
			05h revector INT 2F to trap and remove trap for others
			06h set ??? flag
			07h clear ??? flag
			08h get ??? flag word
			---Windows 3.11 only---
			09h ???
			0Ah ???
			0Bh ???
			0Ch get ???
---if function 00h---
Return: DX:AX -> ??? data (see #01417)
	BX destroyed
---if function 01h---
	STACK:	DWORD	new intercept (trap) address
Return: AX = status
	    0000h successful
	    0001h failed (already set)
		DX = 0000h
	BX destroyed
Note:	the trap handler is called with a function number in BX, and the
	  original BX on top of the stack; a null handler must perform a
	  POP BX and an IRET
---if function 02h---
Return: AX = status
	    0000h successful
	    0001h failed (not set)
	DX = 0000h
	BX destroyed
---if function 03h,04h---
	STACK:	WORD	???
Return: AX = 0000h
	DX = 0000h
	BX destroyed
---if function 05h---
	???
Return:	BX destroyed
---if function 06h---
Return: AX = 0001h and DX = 0000h if already set
	AX,DX unchanged if successful
	BX destroyed
---if function 07h---
Return: AX = 0001h and DX = 0000h if not set
	AX,DX unchanged if successful
	BX destroyed
---if function 08h---
Return: DX = 0000h
	AX = flags
	    bit 0: set/cleared by functions 06h and 07h
	    bit 1: trap is currently set (refer to functions 01h/02h)
	BX destroyed
---if function 09h---
Return: AX = status
	    0000h successful
	    0001h failed (already called)
	BX destroyed
---if function 0Ah---
	STACK:	WORD	???
	???
Return:	BX destroyed
---if function 0Bh---
Return: AX = status
	    0000h successful
	    0001h failed (not set)
	BX destroyed
---if function 0Ch---
Return: AX = 0000h
	ES:BX -> ??? data
---if function > 0Ch---
Return: AX = 0001h
	DX = 0000h
	BX destroyed

Format of IFSHLP ??? data:
Offset	Size	Description	(Table 01417)
 00h	DWORD	-> DOS Swappable Data Area (see #01687,#01689)
 02h	WORD	??? offset in DOS data segment?
 04h	WORD	offset in DOS data segment of current-PSP WORD
 06h	WORD	???
 08h	WORD	???
 0Ah	WORD	???
 0Ch	DWORD	-> DOS List of Lists (see #01627)
 10h	???
SeeAlso: #01416

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214402 - INT 21 U - IFSHLP.SYS - GET ENTRY POINT

INT 21 U - IFSHLP.SYS - GET ENTRY POINT
	AX = 4402h
	BX = file handle for device "IFS$HLP$"
	CX = 0008h (size of buffer in bytes)
	DS:DX -> buffer for entry point record (see #01415 at AH=3Fh"IFSHLP")
Return: CF clear if successful
	    buffer filled
	CF set on error
	    AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
SeeAlso: AH=3Fh"IFSHLP"

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214402 - INT 21 - DRFAT32.SYS device driver - IOCTL INPUT

INT 21 - DRFAT32.SYS device driver - IOCTL INPUT
	AX = 4402h
	BX = file handle referencing character device for DRFAT32.SYS driver
	    (e.g. "FAT32XXX" in the default configuration)
	CX = number of bytes to read
	DS:DX -> control block (see #04108)
Return: CF clear if successful
	    AX = number of bytes actually read
	CF set on error
	    AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
Notes:	 the data returned depends on the first byte of the control block
	   the remainder of the control block is filled by the driver
	 one DRFAT32.SYS device driver supports up to 8 subunits (that is up
	   to 8 FAT32 partitions). By default, DRFAT32.SYS logs in all FAT32
	   partitions it finds, however, by using command line options /C (CHS),
	   /L (LBA), /H (Hidden) and /P:1..4 (Primary), /E:1..255 (Logical
	   Drive), and /U:min[,max] (Unit 128..255) it can be directed to
	   attach only to one or a specific range of partitions. Multiple
	   DRFAT32.SYS drivers can be loaded in a system when using the
	   /D:name option. To assign them to the redirector, the /D:name option
	   must be repeated for each of the DRFAT32.SYS drivers in the
	   DRFAT32.EXE command line.
SeeAlso: AX=4402h"CD-ROM",INT 2F/AX=0802h

Format of DRFAT32 control block:
Offset	Size	Description	(Table 04108)
 00h	BYTE	data being requested
		00h device driver header address
		09h media change status
		48h address of DRFAT32 geometry table
		else error
---function 00h---
 01h	DWORD	device driver header address (see also AH=52h,#01646)
---function 09h---
 01h	BYTE	media change status
		00h don't know
		01h media unchanged
		FFh media has been changed
---DRFAT32 function 48h---
 01h	DWORD	address of DRFAT32 geometry table (see #04109)

Format of DRFAT32 Geometry Table:
Offset	Size	Description	(Table 04109)
 00h 8*59 BYTEs	eight DRFAT32 partition data tables (see #04110)
 1D8h	BYTE	DRFAT32 access flags (see #04111)
 1D9h	BYTE	DRFAT32 status flags (see #04112)
Note:	This is the table layout used by DRFAT32.SYS 1.00 which supports up
	  to 8 sub-units. The layout of this table and its records may change,
	  so the version indicator in the device driver's signature ("FAT320")
	  and the size of the public data structure should be checked first.
SeeAlso: #04108

Format of DRFAT32 partition data table:
Offset	Size	Description	(Table 04110)
 00h	BYTE	size of following public data structure (9)
	--- public data (needed by the DRFAT32.EXE redirector) ---
 01h	WORD	bytes per sector
 03h	BYTE	sectors per cluster
 04h	WORD	reserved sectors
 06h	DWORD	root directory start cluster
	--- private data ---
 0Ah	DWORD	sectors per track
 0Eh	DWORD	root directory sector
 12h	DWORD	partition start sector
 16h	DWORD	highest partition sector allowed
		(only if range checking enabled)
 1Ah	DWORD	absolute cluster start sector
		(cluster start sector+partition start sector)
 1Eh	DWORD	total sectors per track (number of heads * sectors per track)
 22h	BYTE	drive unit (default 80h)
 23h	BYTE	temp buffer: CHS sectors to write (if verify enabled)
 24h	BYTE	INT 13h extension version
	--- CHS data ---
 25h	WORD	cylinder
 27h	WORD	head
 29h	WORD	sector
	--- LBA data ---
 2Bh 16 BYTEs disk address packet (see #00272 at INT 13/AH=42h)
SeeAlso: #04109

Bitfields for DRFAT32 access flags:
Bit(s)	Description	(Table 04111)
 7	using LBA addressing instead of CHS
 6	using INT 13h extensions (see also INT 13/AH=48h)
 5	multi-sector access allowed
 4	force media change indication on removable drives
 3	force verify after every write (/W)
 2	more than 1024 cylinders, less than 64 heads (/A)
 1	client-side asynchronous buffering allowed (/B), normally =0
 0	read-only access (/R)
SeeAlso: #04109,#04112

Bitfields for DRFAT32 status flags:
Bit(s)	Description	(Table 04112)
 7-2	reserved (0)
 1	Save Guard enabled (blocks any further writes after a fault)
 0	volume may have dirty sectors (set after write operations)
SeeAlso: #04109,#04111

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214403 - INT 21 - DR DOS $IDLE$ - IOCTL - DYNAMIC IDLE DETECTION CONTROL

INT 21 - DR DOS $IDLE$ - IOCTL - DYNAMIC IDLE DETECTION CONTROL
	AX = 4403h
	BX = file handle referencing character device $IDLE$
	CX = number of bytes to write (0004h)
	DS:DX -> $IDLE$ IOCTL structure (see #04113)
Return: CF clear if successful
	    AX = number of bytes actually written
	CF set on error
	    AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
Notes:	When the DR DOS IBMBIO.COM detects the presence of the $IDLE$ device
	  during startup, it will retrieve the address of the idle state
	  data area via INT 21/AX=4458h and pass it along to the $IDLE$ device
	  driver by calling this function.

Format of DR DOS $IDLE$ IOCTL structure:
Offset	Size	Description	(Table 04113)
 00h	DWORD	-> idle state data area (see Table !!! at INT 21/AX=4458h)

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214405 - INT 21 U - SUPERSTOR - IOCTL - INSTALL CHECK

INT 21 U - SUPERSTOR - IOCTL - INSTALL CHECK
	AX = 4405h
	BL = drive number (00h = default, 01h = A:, etc)
	(BH = 0???)
	CX = 000Ch (size of SuperStor packet structure)
	DS:DX -> SuperStor packet structure (see #04114)
Return: CF clear if IOCTL successful -- check SuperStor packet for actual
	      status
	    AX = number of bytes actually transferred???
	CF set on error
	    AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
Note:	This function is called with CX = 0008h for command 06h by NWCACHE
	  although the Request Packet can be larger.  WINSWAP.SYS calls it
	  with 000Ch - also for command 06h.

Format of SuperStor packet:
Offset	Size	Description	(Table 04114)
 00h	WORD	(call) product signature AA55h
		(ret) result code, 0000h if successful
 02h	BYTE	(call) SuperStor product ID (01h)
 03h	BYTE	(call) SuperStor command parameter:
		06h = get compressed drive structure / drive parameters
		07h = return the compressed length of a file
		08h = return real drive ID for swapped drive
		09h = validate the contents of the cluster
		0Bh = checks whether deleted cluster is free
		0Ch = reallocate previously deleted cluster
		0Dh = read absolute sector from the drive
		0Eh = write absolute sector to the drive
		0Fh = instruct the driver to rebuild tables
		10h = flush any cached Replacement Block Table (RBT) sectors
		      to the drive
---command 06h---
 04h	DWORD	(ret) pointer to SuperStor CVF's compressed unit structure
		      (see #04115)
 08h	DWORD	(ret) pointer to internal status structure
---command 07h---
 04h	DWORD	(ret) size of file in bytes
 08h	WORD	(ret) first cluster number
---command 08h---
 04h	BYTE	(ret) swapped drive (0-based)
---commands 09h,0Bh,0Ch---
 04h	WORD	(call) cluster
---commands 0Dh,0Eh---
 04h	DWORD	(call) first logical sector to transfer
 08h	WORD	(call) number of logical sectors to transfer
 0Ah	DWORD	(call) pointer to buffer
---command 0Fh---
 04h	WORD	(call) temporary buffer area
---command 10h---
 no additional parameters

Format of SuperStor CVF compressed unit structure:
Offset	Size	Description	(Table 04115)
 00h 31 BYTEs	BIOS parameter block for compressed drive (see #01663)
 1Fh  5 BYTEs	reserved for future expansion of the BPB
 24h 33 BYTEs   DOS 4-6 style drive parameter block for compressed drive
		  (see #01395)
 45h  2 BYTEs	reserved for future expansion of the DPB
 47h	WORD	first sector of relocation table (RBT)
 49h	WORD	first sector of file allocation table
 4Bh	WORD	first sector of the data area
 4Dh	BYTE	sec2byteshift
 4Eh  2 BYTEs	???
		Note:	Reportedly these two bytes did not exist in ADDSTOR's
			  specification, so the whole structure would have
			  been documented differently.
 50h	WORD	sectors per cluster
 52h	BYTE	sector shift
 53h	WORD	compression ratio
 55h	DWORD	number of physical sectors in the host file
 59h	WORD	OS version
 5Bh	BYTE	SuperStor level
 5Ch	BYTE	unknown???
 5Dh	BYTE	flags
		bits 7-1: ???
		bit 0: drive is mounted
 5Eh	BYTE	unknown???
 5Fh	DWORD	pointer to CVF's underlaying host DCB
		this should be the physical DPB for this unit
		    ->  +00h BYTE host unit DOS unit number
		        +01h BYTE CVF's driver host subunit number
Note:	As this SuperStor compressed unit structure's structure is located
	  within the segment the SuperStor driver has occupied, the segment
	  value of its address can be used as an installation check, since it
	  contains the signature "ADDSTOR" at offset 20h in the SuperStor
	  driver.  This is used by Novell DOS 7 WINSWAP.SYS to check for the
	  presence of SuperStor.
SeeAlso: #04114
Index:	installation check;SuperStor

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214B18DX0010 - INT 21 U - FBOOT v2.13 - PERFORM FAST BOOTSTRAP

INT 21 U - FBOOT v2.13 - PERFORM FAST BOOTSTRAP
	AX = 4B18h
	DX = 0010h
	BX = disk selector
	    0000h boot from floppy
	    0080h boot from hard disk
Return: never if FastBoot installed
Program: CyberWare FastBoot allows fast warm boots by skipping CMOS
	  checking, ROM scan, RAM & peripheral components test
InstallCheck:	search for a character device driver called "FBOOT$$$"

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215758 - INT 21 U - Headroom - API

INT 21 U - Headroom - API
	AX = 5758h
	BL = function
	    00h ???
	    01h get Headroom location
		Return: CF clear if installed
			    AX = PSP segment of Headroom TSR
			    BX = paragraphs of memory used by Headroom
			CF set if not (normal DOS return)
		Note:	this function is also used as an installation check
	    02h get INT 21 handler
		Return: CF clear
			ES:BX -> Headroom's INT 21 handler
		Note: also sets unknown flag
	    03h launch application???
		DS:SI -> 233-byte application record
		Return: ???
	    04h ???
		???
		Return: CF clear
	    05h get swap directory
		Return: CF clear
			DX:AX -> ASCIZ swap directory name
	    06h ???
		DX = ???
		Return: CF clear
	    07h ???
	    08h ???
	    09h get current application
		Return: BX = application number
	    0Ah ???
		DX = application number
		DS:SI = ???
		Return: ???
	    0Bh ???
	    0Ch ???
		DX = application number
		???
		Return: ???
	    0Dh ???
		DX = application number
		???
		Return: ???
	    0Eh get ???
		Return: CF clear
			AX = ???
	    0Fh set ??? flag
	    10h clear ??? flag
	    11h find application by name
		DS:SI -> ASCIZ application name
		Return: CF clear
			AX = application number or FFFFh if not loaded
	    12h ???
		DX = application number
		Return: CF clear
			???
	    13h ???
		Return: CF clear
	    14h ???
		same as function 13h
	    15h set ???
		DX = ???
	    16h get ???
		Return: AX = ??? set by function 15h
	    17h get ???
		Return: BX = ???
			CX = ??? (may be pointer in BX:CX)
	    18h BUG: branches incorrectly due to fencepost error
Program: Headroom is a TSR/task switcher by Helix Software
SeeAlso: AX=4C57h,AX=5757h,INT 2F/AX=5758h

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216500 - INT 21 - Windows95 (OSR2) - SET GENERAL INTERNATIONALIZATION INFO

INT 21 - Windows95 (OSR2) - SET GENERAL INTERNATIONALIZATION INFO
	AX = 6500h
	ES:DI -> buffer containing internationalization info (see #01750)
	CX = size of buffer (>= 7)
Return: CF clear if successful
	    AX = system code page
	    CX = number of bytes copied from supplied buffer
	CF set on error
	    AX = error code
Note:	this function will not overwrite the country or code-page numbers,
	  but can be used to modify all other data about the country and
	  code page
SeeAlso: AH=65h"GET EXTENDED",AH=70h

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217070BX6060 - INT 21 - PCW Weather Card interface - GET DATA SEGMENT

INT 21 - PCW Weather Card interface - GET DATA SEGMENT
	AX = 7070h
	BX = 6060h
	CX = 7070h
	DX = 7070h
	SI = 7070h
	DI = 7070h
Return: AX = segment of data structure (see #01776)
Notes:	the data structure is at offset 516 from this segment
	the update byte is at offset 514 from this segment.  Updates are
	  once per second while this byte is nonzero and it is decremented
	  once per second.  While this byte is 0 updates are once per minute.
SeeAlso: AX=7070h/BX=7070h

Format of PCW Weather Card data structure:
Offset	Type	Description	(Table 01776)
 00h	WORD	hour
 02h	WORD	minute
 04h	WORD	second
 06h	WORD	day
 08h	WORD	month
 0Ah	WORD	year
 0Ch	WORD	???
 0Eh	WORD	relative barometric pressure (in 1/100 inches)
 10h	WORD	???
 12h	WORD	???
 14h	WORD	temperature 1 (in 1/10 degrees F)
 16h	WORD	temperature 1 lowest (in 1/10 degrees F)
 18h	WORD	temperature 1 highest (in 1/10 degrees F)
 1Ah	WORD	temperature 2 (in 1/10 degrees F)
 1Ch	WORD	temperature 2 lowest (in 1/10 degrees F)
 1Eh	WORD	temperature 2 highest (in 1/10 degrees F)
 20h	WORD	wind speed (in MPH)
 22h	WORD	average of 60 wind speed samples (in MPH)
 24h	WORD	highest wind speed (in MPH)
 26h	WORD	wind chill factor  (in 1/10 degrees F)
 28h	WORD	lowest wind chill factor (in 1/10 degrees F)
 2Ah	WORD	???
 2Ch	WORD	wind direction (in degrees)
 2Eh	WORD	accumulated daily rainfall (in 1/10 inches)
 30h	WORD	accumulated annual rainfall (in 1/10 inches)

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217070BX7070 - INT 21 - PCW Weather Card interface - INSTALLATION CHECK

INT 21 - PCW Weather Card interface - INSTALLATION CHECK
	AX = 7070h
	BX = 7070h
	CX = 7070h
	DX = 7070h
	SI = 7070h
	DI = 7070h
Return: AX = 0070h
	BX = 0070h
	CX = 0070h
	DX = 0070h
	SI = 0070h
	DI = 0070h
SeeAlso: AX=7070h/BX=6060h,AX=8080h

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218080 - INT 21 - PCW Weather Card interface - UNINSTALL PCW.COM AND FREE MEMORY

INT 21 - PCW Weather Card interface - UNINSTALL PCW.COM AND FREE MEMORY
	AX = 8080h
Return: ???
SeeAlso: AX=7070h/BX=7070h

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2190--CXFFFF - INT 21 U - PTS-DOS 6.51 & S/DOS 1.0 - DIRECT DISK READ

INT 21 U - PTS-DOS 6.51 & S/DOS 1.0 - DIRECT DISK READ
	AH = 90h
	CX = FFFFh (for partitions > 32 Mb)
	    DS:BX -> request block (see #04094)
	CX = sector count (for partitions < 32 Mb)
	    DX = starting sector number
	    DS:BX -> buffer
Return: CF set on error
	    AX error code
	CF clear on success
Notes:	This function is supported by Paragon Technology Systems S/DOS 1.0
	  (and most probably by PTS-DOS 6.51, maybe even earlier).
	To access big partitions (> 32 Mb), the CX != FFFFh is not allowed and
	  the buffer must always be used. Otherwise, the system will return
	  error code 0207h.
	It is currently unknown if this function is also supported by
	  PhysTechSoft PTS-DOS 6.60, 6.70, or 2000.
SeeAlso: INT 21/AH=91h"PTS",INT 25h,INT 26h

Format of PTS-DOS & S/DOS disk read/write request block:
Offset	Size	Description	(Table 04094)
 00h	DWORD	sector number
04h	WORD	counter
06h	DWORD	pointer to buffer

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2191--CXFFFF - INT 21 U - PTS-DOS 6.51 & S/DOS 1.0 - DIRECT DISK WRITE

INT 21 U - PTS-DOS 6.51 & S/DOS 1.0 - DIRECT DISK WRITE
	AH = 91h
	CX = FFFFh (for partitions > 32 Mb)
	    DS:BX -> request block (see #04094)
	CX = sector count (for partitions < 32 Mb)
	    DX = starting sector number
	    DS:BX -> buffer
Return: CF set on error
	    AX error code
	CF clear on success
Note:	This function is supported by Paragon Technology Systems S/DOS 1.0
	  (and most probably by PTS-DOS 6.51, maybe even earlier).
	To access big partitions (> 32 Mb), CX != FFFFh is not allowed and
	  the buffer must always be used. Otherwise, the system will return
	  error code 0207h.
	It is currently unknown if this function is also supported by
	  PhysTechSoft PTS-DOS 6.60, 6.70, or 2000.
SeeAlso: INT 21/Ah=90h"PTS",INT 25h,INT 26h

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2F - INT 2F - Multiplex - NOTES

INT 2F - Multiplex - NOTES
	AH = identifier of program which is to handle the interrupt
	   00h-3Fh reserved for IBM (for DOS)
	   40h-7Fh reserved for Microsoft (for DOS)
	   80h-B7h reserved for IBM
	   B8h-BFh reserved for networks
	   C0h-FFh reserved for applications
	AL is the function code
   This is a general mechanism for verifying the presence of a TSR and
   communicating with it.  When searching for a free identifier code for AH
   using the installation check (AL=00h), the calling program should set
   BX/CX/DX to 0000h and must not depend on any registers other than CS:IP
   and SS:SP to be valid on return, since numerous programs now use additional
   registers on input and/or output for the installation check.
Notes:	Since the multiplex chain is growing so long, and beginning to
	  experience multiplex number collisions, I have proposed an alternate
	  multiplex interrupt on INT 2D.  If you decide to use the alternate
	  multiplex, please let me know.
	DOS and some other programs return values in the flags register, so
	  any TSR which chains by calling the previous handler rather than
	  jumping to it should ensure that the returned flags are preserved
	  and passed back to the original caller
SeeAlso: INT 2D"ALTERNATE MULTIPLEX"

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2F1230 - INT 2F U - Windows95 - FIND SFT ENTRY IN INTERNAL FILE TABLES

INT 2F U - Windows95 - FIND SFT ENTRY IN INTERNAL FILE TABLES
	AX = 1230h
	ES:DI -> SFT entry
Return: CF clear if SFT found in internal table
	CF set if SFT not in any internal file table
	    AX = 0000h
	    SI:CX = 32-bit starting cluster number for directory
	    DX = directory entry number
	    BX = index into new file system table
Notes:	the new file system table from which the return values are taken is
	  reported to be statically allocated with 20 entries, and used only
	  for FCB calls
	this function is not supported by DR-DOS 7.03 or earlier, by S/DOS 1.0,
	  or by PTS-DOS 6.51
BUG:	Win95-OSR2 is reported to have a bug that can potentially corrupt
	  memory if SFT tables are "arranged poorly"
SeeAlso: AX=1231h,AX=1200h

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2F1231 - INT 2F U - Windows95 - SET/CLEAR "REPORT WINDOWS TO DOS PROGRAMS" FLAG

INT 2F U - Windows95 - SET/CLEAR "REPORT WINDOWS TO DOS PROGRAMS" FLAG
	AX = 1231h
	DL = function
	    00h set byte after "IsWIN386" to 01h
	    01h set "IsWIN386" bit 1
	    02h clear "IsWIN386" bit 1
	    else
		Return:	CF set
			AX = 0001h
Return: CF clear
	AX = 0000h
Note:	this function is not supported by DR-DOS 7.03 or earlier, by S/DOS 1.0,
	  or by PTS-DOS 6.51
BUG:	Windows98 will crash the system if DL>02h on entry due to an off-by-1
	  conditional jump; if the jump were correct, the function would return
	  CF set/AX=0001h as for Windows95
SeeAlso: AX=1230h,AX=1200h

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2F1400BX0EDC - INT 2Fh - DR-DOS NLSFUNC 4.01+ - ENHANCED INSTALLATION CHECK

INT 2Fh - DR-DOS NLSFUNC 4.01+ - ENHANCED INSTALLATION CHECK
	AX = 1400h
	BX = 0EDCh
Return: AL = status
	    00h not installed, OK to install
	    01h not installed, not OK to install
		  (for example under a multitasker)
	    FFh installed
		ES:DI -> version signature ("4.01$".."4.04$" for 4.01..4.04)
	flags may be destroyed
Program: NLSFUNC 4.01+ is currently an independent project under
	  development by Matthias Paul. It is not yet publically available,
	  but as NLSFUNC 4.00 did, it will probably become available with
	  future DR-DOS releases.
Notes:	If BX <> 0EDCh on entry, DR-DOS NLSFUNC 4.01+ performs the standard
	  installation check (INT 2F/AX=1400h), and does not change ES:DI.
	DR DOS 5.0+ NLSFUNC 3.00+ returns CF set and AX=0001h, if AL was not
	  00h, FEh, or FFh on entry.
	NLSFUNC 4.01+ will use the ES:DI enhancement to check the driver
	  version and calculate displacements into the resident driver for
	  runtime updates of internal structures like the local NLS database
	  filespec, etc.
	If the returned ES points into the HMA (ES=FFFEh) care should be taken
	  to actually access the HMA while checking the version signature and
	  updating resident data (mutex with local A20 enable/disable).
	While previous issues of NLSFUNC installed under a multitasker,
	  DR-DOS NLSFUNC 4.01+ will actually adapt to work properly in this
	  environment.
SeeAlso: AX=1400h"NLSFUNC.COM",AX=14FEh,AX=14FFh,INT 21/AH=65h

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2F1615 - INT 2F - Windows95 - SAVE32.COM - INSTALLATION CHECK

INT 2F - Windows95 - SAVE32.COM - INSTALLATION CHECK
	AX = 1615h
Return: AX = 0000h if installed
	    BX = segment of resident code
Program: SAVE32.COM is a TSR included in the Windows95 distribution which
	  preserves the contents of 32-bit registers across invocations of
	  all of the hardware interrupt handlers (which, for some older BIOSes
	  and TSRs, do not properly preserve the high words of the 32-bit
	  registers)

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2F1684BX377B - INT 2F - MS Windows - MX1501HAD - GET API ENTRY POINT

INT 2F - MS Windows - MX1501HAD - GET API ENTRY POINT
	AX = 1684h
	BX = 377Bh (virtual device ID for MX1501HAD device)
	ES:DI = 0000h:0000h
Return: ES:DI -> VxD API entry point (see #02708)
		  0000h:0000h if the VxD does not support an API
Note:	The drivers VCMD95C.VXD and VCMD.386 are part of the driver disks
	  provided with the chip-card-reader/keyboard combination MX 1501 HAD,
	  produced by Cherry
SeeAlso: AX=1684h"DEVICE API",INT 20"Windows"

(Table 02708)
Call CHERRY VCMD95C.VXD entry point with:
	AX = function
	    0001h get version
		Return: AX = version number (0100h) (AH = major, AL = minor)
	    0002h hook INT 09 (and 8???)
	    0003h unhook INT 09 (and 8???)
	    0004h get number of bytes in FIFO
		Return: AX = bytes in FIFO
	    0005h get next FIFO-data
		Return: AX = data
			BL = port number
			BH = direction (1=in, 0=out)
			DX:CX = timestamp
	    0006h clear FIFO
	    0007h output byte
		DX = port number
		BL = keyboard command
		Return: data in FIFO (see #02710)
		       (value, port, in/out, timestamp)
	    0008h input byte
		DX = port number
		Return: data in FIFO (see #02710)
			(value, port, in/out, timestamp)
	    0009h input byte immediately
		DX = port number
		Return: AX = data
	    000Ah read next FIFO data (nondestructive)
		Return: AX = data
			BL = port number
			BH = direction (1=in, 0=out)
			DX:CX = timestamp
	    000Bh get timestamp
		Return: DX:CX = timestamp (in ms)
	    000Ch enable IRQ 1
	    000Dh disable IRQ 1
	    000Eh enable data retrieval
		Note:	Sets a flag in the internal mode-byte which
			  tells the driver to recognize the data
	    000Fh disable data retrieval
		Note:	resets a flag in the internal mode-byte
	    0010h get retrieval mode
		Return: AX = current retrieval mode
	    0011h set retrieval mode
		BX = new retrieval mode (see #02709)
		Return: AX = old retrieval mode
	    0012h get command value
		Return: AX = command value
	    0013h set command value
		BX = command value
SeeAlso: #02706,#02711

Bitfields for retrieval mode:
Bit(s)	Description	(Table 02709)
 0	enable data retrieval
 1	0 = interrupt-driven
	1 = polling mode
 2	0 = read port 60h everytime
	1 = read port 60h only when OBF of port 64h is set
 3	0 = don't call old INT 9
	1 = call INT 9 before our INT-handler
 4-7	reserved
SeeAlso: #02708,#02710

Format of FIFO entry (1024 entries in FIFO):
Offset	Size	Description	(Table 02710)
 00h	BYTE	data byte
 01h	BYTE	I/O port
 02h	BYTE	direction (1=in, 0=out)
 03h	BYTE	reserved
 04h	DWORD	timestamp
SeeAlso: #02708,#02709

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2F18 - INT 2F U - MS-Manager

INT 2F U - MS-Manager
	AH = 18h
	???
Return: ???

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2F1980 - INT 2F U - IBM ROM-DOS v4.0 - INSTALLATION CHECK

INT 2F U - IBM ROM-DOS v4.0 - INSTALLATION CHECK
	AX = 1980h
Return: AL = FFh if ??? installed/supported
Note:	called at the very beginning of SHELLSTB.COM, which exits if AL is not
	  FFh on return
SeeAlso: AX=1981h,AX=1982h

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2F1981 - INT 2F U - IBM ROM-DOS v4.0 - GET ??? STRING

INT 2F U - IBM ROM-DOS v4.0 - GET ??? STRING
	AX = 1981h
	DS:DX -> buffer for ???
Return: AL = status
	    FFh if successful
		DS:DX buffer filled (refer to note below)
	    81h on error
Note:	the first byte of the buffer is unchanged; depending on a byte in
	  IBMBIO.COM, the remainder of the buffer is filled with either
	  "C:\ROMSHELL.COM",0Dh or xxh,xxh,0Fh,"C:\ROMSHELL.COM",0Dh
SeeAlso: AX=1980h,AX=1982h

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2F1982 - INT 2F U - IBM ROM-DOS v4.0 - GET ??? TABLE

INT 2F U - IBM ROM-DOS v4.0 - GET ??? TABLE
	AX = 1982h
Return: AL = FFh if supported
	    ES:DI -> ??? table (see #02734)
Note:	called by ROMSHELL.COM
SeeAlso: AX=1980h,AX=1981h

Format of ROM-DOS v4.0 ??? table:
Offset	Size	Description	(Table 02734)
 00h	BYTE	??? (00h)
 01h	BYTE	??? (41h) (ROMSHELL.COM checks if =00h)
 02h	BYTE	??? (00h) (ROMSHELL.COM checks if =01h)
 03h	WORD	??? (0001h) (ROMSHELL.COM checks if =0001h)
 05h	BYTE	??? (00h)
 06h	WORD	??? (04D5h)

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2F43D6 - INT 2F - Multiplex - ???

INT 2F - Multiplex - ???
	AX = 43D6h
Note:	Central Point's CPBACKUP v9 calls this function with CX=07FFh and
	  DX=80D3h at startup

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2F4653CX0007 - INT 2F - F-PROT v2.x - VIRSTOP - ENABLE/DISABLE BOOTSECTOR READ CHECKING

INT 2F - F-PROT v2.x - VIRSTOP - ENABLE/DISABLE BOOTSECTOR READ CHECKING
	AX = 4653h ('FS')
	CX = 0007h
	BL = new state of bootsector checking (01h = disabled)
Program: VIRSTOP is the resident virus-checker from Fridrik Skulason's F-PROT
	  virus/trojan protection package

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2F4653CX0008 - INT 2F - F-PROT v2.x - ???

INT 2F - F-PROT v2.x - ???
	AX = 4653h ('FS')
	CX = 0008h
	???
Return: ???
Note:	called by F-PROT v2.x VIRSTOP

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2F4653CX0008 - INT 2F - F-PROT v2.x - VIRSTOP - INSTALLATION CHECK

INT 2F - F-PROT v2.x - VIRSTOP - INSTALLATION CHECK
	AX = 4653h ('FS')
	CX = 0008h
Return: AX = 5346h if installed
	    BX = version???
	    DS:SI -> ASCIZ name of file containing virus signatures
	    DS:DI -> 80-byte buffer for ???

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2F47 - INT 2F U - ???

INT 2F U - ???
	AH = 47h
	???
Return: ???
Note:	reportedly called by Microsoft BASIC Compiler v7.0

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2F49 - INT 2F U - DOS 5.0+ SETUP

INT 2F U - DOS 5.0+ SETUP
	AH = 49h
	AL = function
	    00h update format completion gauge
		BX = percentage complete, 0000h when done, FFFFh if aborted
		Return: AX = status
			    0000h continue formatting
			    else  installation program wants FORMAT to abort
	    10h get pointer to resident data
		AX = FFFFh if supported
		    ES:BX -> internal structure
	???
Return: ???

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2F4A15BX0000 - INT 2F - MS EMM386.EXE v4.46+ - INSTALL I/O VIRTUALIZATION HANDLER

INT 2F - MS EMM386.EXE v4.46+ - INSTALL I/O VIRTUALIZATION HANDLER
	AX = 4A15h
	BX = 0000h (function number)
	DX = starting I/O address
	EDX high word = ending I/O address
	CX = number of ports to trap
	DS:SI -> I/O dispatch table (see #02815)
	DI = size of client's code and data (size of DS segment which must be
	      made available to I/O dispatch function in protected mode)
Return: CF clear if successful
	CF set on error
Notes:	this interface is only available in virtual-86 mode; the I/O handlers
	  will be called in protected mode
	only ports 0100h-FFFFh may be trapped; EMM386 reserved ports 0000h-
	  00FFh

Format of EMM386 I/O dispatch table [array]:
Offset	Size	Description	(Table 02815)
 00h	WORD	I/O port number
 02h	WORD	offset of I/O handler for port (see #02816)

(Table 02816)
Values EMM386 I/O dispatch function is called with:
	CX = Ring0 code selector for I/O handler's segment
	DS = Ring0 data selector for I/O handler's segment (alias of CS)
	EDX = faulting I/O address
	ECX = direction (00000008h for byte output, 00000000h for byte input)
		(reportedly 00h for byte/word input, 04h for byte/word output
		  under DOS 6.22 EMM386)
	EAX = data in/out
Return: (via FAR RET)
	CF clear if I/O access successfully virtualized
	CF set if access not virtualized (default handler will be called to
	      perform the I/O)
BUG:	32-bit I/O on trapped ports hangs the DOS 6.22 EMM386
SeeAlso: #02815

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2F4D - INT 2F U - KKCFUNC

INT 2F U - KKCFUNC
	AH = 4Dh
	AL = function
	    00h get function address
	    01h get error number of last call to KKC DOS function
	    02h	register/release KKC
	    03h get table address
	!!! details to follow
Return: ???
Notes:	This API is provided by KKCFUNC.SYS, a support driver for Kana Kanji
	  Converters (KKC), which is used to handle multiple client KKCs and
	  provide all the necessary framework to call DOS functions at any
	  time.
	also called by MSKK
	For AL > 3, KKCFUNC passes the call down to the original INT 2Fh,
	  as recorded at initialization.

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2F7F24 - INT 2F - Multiplex - ???

INT 2F - Multiplex - ???
	AX = 7F24h
	???
Return: ???
Note:	called by PC/370, an IBM 370 emulator by Donald S. Higgins

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2F7F26 - INT 2F - Multiplex - ???

INT 2F - Multiplex - ???
	AX = 7F26h
	???
Return: ???
Note:	called by PC/370, an IBM 370 emulator by Donald S. Higgins

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2F86 - INT 2F U - ???

INT 2F U - ???
	AH = 86h
	AL = function (at least 06h and 07h)
	???
Return: ???
Note:	called by Codeview for Windows
SeeAlso: AH=44h

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2F97 - INT 2F U - Micro Focus COBOL v3.1.31 internal - ???

INT 2F U - Micro Focus COBOL v3.1.31 internal - ???
	AH = 97h
	AL = function
	    00h installation check
		Return: AL = FFh if installed
	    08h get ???
		Return: AL = ???
			BX = ???
			DX = ???
			AH destroyed
	    20h get ???
		Return: AX:BX = far entry point of ???
			CX = segment of ???
	    80h ???
		Return: ???
Notes:	Micro Focus COBOL compiler v3.1.31 and companion programs supply
	  these functions for internal use; these programs call the
	  installation check at startup (before installing the INT 2F
	  handler) and crash the system if a not authorized program answers
	  with AL=FFh
	the handler checks AL only if an internal flag is 1, otherwise ???
SeeAlso: AH=98h"COBOL",AH=99h"COBOL",AH=9Ah"COBOL"

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2F98 - INT 2F U - Micro Focus COBOL v3.1.31 internal - ???

INT 2F U - Micro Focus COBOL v3.1.31 internal - ???
	AH = 98h
	AL = function
	    00h installation check
		Return: AL = FFh if installed
	    10h get ???
		Return: AX = ???
	    18h get segment of ???
		Return: AX = segment of ???
	    19h get pointer to ???
		Return: AX:BX -> ???
Notes:	Micro Focus COBOL compiler v3.1.31 and companion programs supply
	  these functions for internal use; these programs call the
	  installation check at startup (before installing the INT 2F
	  handler) and crash the system if a not authorized program answers
	  with AL=FFh
	the handler checks AL only if an internal flag is 0, otherwise ???
SeeAlso: AH=97h"COBOL",AH=99h"COBOL",AH=9Ah"COBOL"

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2F99 - INT 2F U - Micro Focus COBOL v3.1.31 internal - ???

INT 2F U - Micro Focus COBOL v3.1.31 internal - ???
	AH = 99h
	???
Return: ???
Note:	used internally by Micro Focus COBOL compiler v3.1.31 and companion
	  programs
SeeAlso: AH=97h"COBOL",AH=98h"COBOL",AH=9Ah"COBOL"

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2F9A - INT 2F U - Micro Focus COBOL v3.1.31 internal - ???

INT 2F U - Micro Focus COBOL v3.1.31 internal - ???
	AH = 9Ah
	???
Return: ???
Note:	used internally by Micro Focus COBOL compiler v3.1.31 and companion
	  programs
SeeAlso: AH=97h"COBOL",AH=98h"COBOL",AH=99h"COBOL"

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2FAB00 - INT 2F - SRSoft MODAL PC v2+ - INSTALLATION CHECK / GET VERSION

INT 2F - SRSoft MODAL PC v2+ - INSTALLATION CHECK / GET VERSION
	AX = AB00h
Return: AX = 5253h ('SR' byte-swapped) if installed
	    BX = MODAL PC version (BL = major, BH = minor)
Program: MODAL PC is an algorithm/real-system simulation package by SR Soft
	  using Petri-nets to describe simulated objects
SeeAlso: AX=AB01h"MODAL",AX=AB02h"MODAL",AX=AB06h"MODAL"

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2FAB01 - INT 2F - SRSoft MODAL PC v2+ - GET PROCESS RUN PARAMETER

INT 2F - SRSoft MODAL PC v2+ - GET PROCESS RUN PARAMETER
	AX = AB01h
Return: AX = 5253h ('SR' byte-swapped) if installed
	BL = run parameter
	    00h normal process
	    01h run with tracing enabled
	    02h run initialization process (first thread of main task)
SeeAlso: AX=AB00h"MODAL",AX=AB02h"MODAL"

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2FAB02 - INT 2F - SRSoft MODAL PC v2+ - SET PROCESS EXIT CODE

INT 2F - SRSoft MODAL PC v2+ - SET PROCESS EXIT CODE
	AX = AB02h
	BL = exit code
Return: AX = 5253h ('SR' byte-swapped) if installed
SeeAlso: AX=AB00h"MODAL",AX=AB01h"MODAL",AX=AB03h"MODAL"

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2FAB03 - INT 2F - SRSoft MODAL PC v2+ - ALLOCATE COMMON MEMORY

INT 2F - SRSoft MODAL PC v2+ - ALLOCATE COMMON MEMORY
	AX = AB03h
	BX = required size of common memory for variables/semaphores in bytes
Return: AX = 5253h ('SR' byte-swapped) if installed
SeeAlso: AX=AB00h"MODAL",AX=AB02h"MODAL",AX=AB04h"MODAL"

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2FAB04 - INT 2F - SRSoft MODAL PC v2+ - GET ALL COMMON VARIABLES AND SEMAPHORES

INT 2F - SRSoft MODAL PC v2+ - GET ALL COMMON VARIABLES AND SEMAPHORES
	AX = AB04h
	DS:DX -> buffer for common data
Return: AX = 5253h ('SR' byte-swapped) if installed
	CF clear if successful
	CF set on error
SeeAlso: AX=AB00h"MODAL",AX=AB03h"MODAL",AX=AB05h"MODAL",AX=AB06h,AX=AB07h

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2FAB05 - INT 2F - SRSoft MODAL PC v2+ - SET ALL COMMON VARIABLES AND SEMAPHORES

INT 2F - SRSoft MODAL PC v2+ - SET ALL COMMON VARIABLES AND SEMAPHORES
	AX = AB05h
	DS:DX -> buffer containing common data
Return: AX = 5253h ('SR' byte-swapped) if installed
	CF clear if successful
	CF set on error
SeeAlso: AX=AB00h"MODAL",AX=AB03h"MODAL",AX=AB04h"MODAL",AX=AB06h,AX=AB07h

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2FAB06 - INT 2F - SRSoft MODAL PC v2+ - GET A COMMON VARIABLE OR SEMAPHORE

INT 2F - SRSoft MODAL PC v2+ - GET A COMMON VARIABLE OR SEMAPHORE
	AX = AB06h
	BX = offset of variable or semaphore in common memory
	CX = variable/semaphore size in bytes
	DS:DX -> buffer for variable or semaphore
Return: AX = 5253h ('SR' byte-swapped) if installed
	CF clear if successful
	CF set on error
SeeAlso: AX=AB00h"MODAL",AX=AB04h,AX=AB05h,AX=AB07h

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2FAB07 - INT 2F - SRSoft MODAL PC v2+ - SET A COMMON VARIABLE OR SEMAPHORE

INT 2F - SRSoft MODAL PC v2+ - SET A COMMON VARIABLE OR SEMAPHORE
	AX = AB07h
	BX = offset of variable or semaphore in common memory
	CX = variable/semaphore size in bytes
	DS:DX -> buffer containing variable or semaphore
Return: AX = 5253h ('SR' byte-swapped) if installed
	CF clear if successful
	CF set on error
SeeAlso: AX=AB00h"MODAL",AX=AB04h,AX=AB05h,AX=AB06h

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2FADC1 - INT 2F U - DOS 4.0+ SELECT - DISPLAY FORMAT DISK PROMPT

INT 2F U - DOS 4.0+ SELECT - DISPLAY FORMAT DISK PROMPT
	AX = ADC1h
Return:	AX destroyed???
Note:	This function is called by DOS 4.0+ FORMAT utility just as it prompts
	  for a disk to be formatted.  It is only issued when the undocumented
	  /SELECT option was specified and is intercepted by SELECT displaying
	  the prompt.  However, the callout is still present in DOS 6.0 at
	  least.

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2FAF00 - INT 2F U - ???

INT 2F U - ???
	AX = AF00h
	???
Return: AX = 0000h if interface supported
SeeAlso: AX=AF02h,AX=AF03h,AX=AF04h,AX=AF13h,AX=AF30h

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2FAF02 - INT 2F U - ???

INT 2F U - ???
	AX = AF02h
	???
Return: ES = ???
SeeAlso: AX=AF00h

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2FAF03 - INT 2F U - ???

INT 2F U - ???
	AX = AF03h
	???
Return: DX = ???
SeeAlso: AX=AF00h

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2FAF04 - INT 2F U - ???

INT 2F U - ???
	AX = AF04h
	???
Return: ???
SeeAlso: AX=AF00h

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2FAF05 - INT 2F U - ???

INT 2F U - ???
	AX = AF05h
	???
Return: ???
SeeAlso: AX=AF00h

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2FAF12 - INT 2F U - ???

INT 2F U - ???
	AX = AF12h
	???
Return: ES = ???
SeeAlso: AX=AF00h

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2FAF13 - INT 2F U - ???

INT 2F U - ???
	AX = AF13h
	???
Return: ???
SeeAlso: AX=AF00h

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2FAF30 - INT 2F U - ???

INT 2F U - ???
	AX = AF30h
	???
Return: ???
SeeAlso: AX=AF00h

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2FBB00BX0000 - INT 2F - CATC USB4DOS Host Controller - INSTALLATION CHECK

INT 2F - CATC USB4DOS Host Controller - INSTALLATION CHECK
	AX = BB00h
	BX = 0000h
Return: AX = 0001h if installed

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2FBB00BX0001 - INT 2F - CATC USB4DOS Host Controller - GET ???

INT 2F - CATC USB4DOS Host Controller - GET ???
	AX = BB00h
	BX = 0001h
Return: AX = 0000h
	CX:BX -> ???

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2FBB00BX0002 - INT 2F - CATC USB4DOS Host Controller - EXECUTE USB REQUEST

INT 2F - CATC USB4DOS Host Controller - EXECUTE USB REQUEST
	AX = BB00h
	BX = 0002h
	CX:DX -> request packet (see #04097)
Return: AX = destroyed

Format of USB4DOS Host Controller request packet:
Offset	Size	Description	(Table 04097)
 00h	WORD	command number
 02h	WORD	(ret) major status
 04h	WORD	(ret) minor status
 06h	DWORD	-> callback function
 0Ah 25 BYTEs	data for command (varies by command number)
 23h 12 BYTEs	reserved for future use

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2FBB00BX0003 - INT 2F - CATC USB4DOS Host Controller - ??? (POLLS VARIOUS I/O PORTS)

INT 2F - CATC USB4DOS Host Controller - ??? (POLLS VARIOUS I/O PORTS)
	AX = BB00h
	BX = 0003h
Return: AX = ???

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2FBB00 - INT 2F - CATC USB4DOS Host Controller - INVALID FUNCTION

INT 2F - CATC USB4DOS Host Controller - INVALID FUNCTION
	AX = BB00h
	BX > 0003h
Return: AX = FFFFh (invalid function)

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2FBC00BL00 - INT 2F - CATC USB4DOS Device Manager - INSTALLATION CHECK

INT 2F - CATC USB4DOS Device Manager - INSTALLATION CHECK
	AX = BC00h
	BL = 00h
Return: AX = installation state
	    0000h not installed
	    0001h installed
	    BC00h not installed
SeeAlso: AX=BC00h/BL=01h,AX=BC00h/BL=03h

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2FBC00BL01 - INT 2F - CATC USB4DOS Device Manager - REGISTER DEVICE

INT 2F - CATC USB4DOS Device Manager - REGISTER DEVICE
	AX = BC00h
	BL = 01h
	CX:DX -> client_info structure (see #04096)
Return: AX = client number, 0000h on failure
SeeAlso: AX=BC00h/BL=02h,AX=BC00h/BL=00h

Format of CATC USB4DOS client_info structure:
Offset	Size	Description	(Table 04096)
 00h	DWORD	-> Attach() worker function
 04h	DWORD	-> Detach() worker function

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2FBC00BL02 - INT 2F - CATC USB4DOS Device Manager - UNLOAD DEVICE

INT 2F - CATC USB4DOS Device Manager - UNLOAD DEVICE
	AX = BC00h
	BL = 02h
	CX = client number
Return: AX destroyed
SeeAlso: AX=BC00h/BL=01h,AX=BC00h/BL=00h

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2FBC00BL03 - INT 2F - CATC USB4DOS Device Manager - HUB DEVICE ATTACHED

INT 2F - CATC USB4DOS Device Manager - HUB DEVICE ATTACHED
	AX = BC00h
	BL = 03h
	BH = address and device type
	    bits 7-1: USB address of hub
	    bit 0: device speed
		=0 low-speed device
		=1 full-speed device
	CX:DX -> callback function
Return: AX = USB address of attached device, or 0000h on failure
SeeAlso: AX=BC00h/BL=04h,AX=BC00h/BL=00h

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2FBC00BL04 - INT 2F - CATC USB4DOS Device Manager - HUB DEVICE DETACHED

INT 2F - CATC USB4DOS Device Manager - HUB DEVICE DETACHED
	AX = BC00h
	BL = 04h
	BH = USB address of detached device (may be the hub itself)
Return: AX destroyed
SeeAlso: AX=BC00h/BL=03h,AX=BC00h/BL=00h

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2FDD - INT 2F - MIXFIX.EXE - API

INT 2F - MIXFIX.EXE - API
	AH = DDh
	AL = function
	    00h installation check
		Return: AX = 00DDh if installed
			    BX = version (BH = major, BL = minor)
	    41h/61h get From: address
		Return: AX = 0001h
			ES:BX -> ASCIZ 4d address of mail sender ("1:2/3.4")
	    49h/69h get To: address
		Return: AX = 0001h
			ES:BX -> ASCIZ 4d address of recipient ("1:2/3.4")
	    4Ah/6Ah get subject of mail
		Return: AX = 0001h
			ES:BX -> ASCIZ subject of handled mail
	    4Dh/6Dh get mail name
		Return: AX = 0001h
			ES:BX -> ASCIZ full name of current mail file
	    4Eh/6Eh get From: field
		Return: AX = 0001h
			ES:BX -> ASCIZ From: field of mail (mail sender's name)
Program: MIXFIX by "KIV without Co" is a FidoNet mail robot which may execute
	  other programs for mail handling.  The called programs may use the
	  services described here to retrieve information about the mail being
	  handled.
Index: installation check;MIXFIX.EXE

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2FE700BX4158 - INT 2F - Multiplex - ??? - INSTALLATION CHECK???

INT 2F - Multiplex - ??? - INSTALLATION CHECK???
	AX = E700h
	BX = 4158h ("AX")
	CX = 4953h ("IS")
	DX = 4845h ("HE")
Return: AL = FFh if installed
	    BX = 4C4Fh ("LO") if ??? installed
	    CX = 4F4Bh ("OK")
	    DX = 4F55h ("OU")
		ES:DI -> ???
Range:	AH=C0h to AH=FFh, selected by scanning AH=E7-FFh, then AH=C0h-E6h
Note:	called by QDPMI when its Real to Protected Mode Switch Entry Point
	  is called

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2FFA00 - INT 2F - Multiplex - ??? - INSTALLATION CHECK???

INT 2F - Multiplex - ??? - INSTALLATION CHECK???
	AX = FA00h
	BX = ??? (0408h)
	CX = ??? (001Fh)
	DX = ??? (0102h)
	SI = ??? (5ACCh)
	DI = ??? (0632h)
Return: ???
Note:	called by WinEmacs at startup

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2FFA00 - INT 2F - Multiplex - ??? - INSTALLATION CHECK???

INT 2F - Multiplex - ??? - INSTALLATION CHECK???
	AX = FA00h
	BX = ??? (03FCh)
	CX = ??? (003Fh)
	DX = ??? (00FFh)
	SI = ??? (5AA6h)
	DI = ??? (0620h)
Return: ???
Note:	called by Matlab at startup

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326E04 - INT 32 - NOISE.SYS v0.55+ - GET INTERRUPT HOOK LIST

INT 32 - NOISE.SYS v0.55+ - GET INTERRUPT HOOK LIST
	AX = 6E04h
Return: AL = status
	    00h = unimplemented
	    04h = DX:BX -> interrupt hook list
	    FEh = subfunction disabled
Note:	the hook list array ends with API interrupt (usually 32h, although
	  it will differ if the API is installed at another interrupt)

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326E06 - INT 32 - NOISE.SYS v0.55+ - GET DEVICE DRIVER HEADER

INT 32 - NOISE.SYS v0.55+ - GET DEVICE DRIVER HEADER
	AX = 6E06h
Return: AL = number of device drivers in NOISE.SYS chain
	    02h = default (for RANDOM and URANDOM devices)
	AH = AMIS device driver flags (set to 00h for now)
	DX:BX -> first device in chain (see #01646)
SeeAlso: INT 2D/AL=06h

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326E18 - INT 32 - NOISE.SYS v0.6+ - READ CONTROL RECORD

INT 32 - NOISE.SYS v0.6+ - READ CONTROL RECORD
	AX = 6E18h
	CX = buffer size
	ES:DI -> buffer
Return: AL = status
	    00h unimplemented (before v0.6)
	    FEh subfunction is disabled
	    FFh successful
		CX = number of bytes read
Note:	the control record corresponds to the IOCTL Read record for the RANDOM
	  device

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326E - INT 32 - NOISE.SYS - RESERVED FOR FUTURE USE

INT 32 - NOISE.SYS - RESERVED FOR FUTURE USE
	AH = 6Eh
	AL = 19h to 3Fh
Return: AL = 00h
Note:	these functions are reserved for future use; user additions to the
	  the driver should use subfunctions 40h to FFh.

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478000 - INT 47 - SQL Base - DATABASE ENGINE API

INT 47 - SQL Base - DATABASE ENGINE API
	AX = 8000h
	DS:BX -> parameter block, first word is function number (see #03203)
Program: SQL Base is a network-oriented database engine by Gupta Technologies
SeeAlso: AX=8001h

(Table 03203)
Values for SQL Base function number:
 01h	"SQLFINI" initalialize application's use of the database
 02h	"SQLFDON" application is done using the database
 03h	"SQLFCON" connect to a cursor/database
 04h	"SQLFDIS" disconnect from a cursor/database
 05h	"SQLFCOM" compile a SQL command
 06h	"SQLFEXE" execute a SQL command
 07h	"SQLFCEX" compile and execute a SQL command
 08h	"SQLFCMT" commit a transaction to the database
 09h	"SQLFDES" describe the items of a SELECT statement
 0Ah	"SQLFGFI" get fetch information
 0Bh	"SQLFFBK" fetch previous result row from SELECT statement
 0Ch	"SQLFFET" fetch next result row from SELECT statement
 0Dh	"SQLFEFB" enable fetch backwards
 0Eh	"SQLFPRS" position in result set
 0Fh	"SQLFURS" undo result set
 10h	"SQLFNBV" get number of bind variables
 11h	"SQLFBND" bind data variables
 12h	"SQLFBNN" bind numerics
 13h	"SQLFBLN" bind long number
 14h	"SQLFBLD" bind long data variables
 15h	"SQLFSRS" start restriction set processing
 16h	"SQLFRRS" restart restriction set processing
 17h	"SQLFCRS" close restriction set
 18h	"SQLFDRS" drop restriction set
 19h	"SQLFARF" apply Roll Forward journal
 1Ah	"SQLFERF" end Roll Forward journal
 1Bh	"SQLFSRF" start Roll Forward journal
 1Ch	"SQLFSTO" store a compiled SQL command
 1Dh	"SQLFRET" retrieve a compiled SQL command
 1Eh	"SQLFDST" drop a stored command
 1Fh	"SQLFCTY" get command type
 20h	"SQLFEPO" get error position
 21h	"SQLFGNR" get number of rows
 22h	"SQLFNSI" get number of select items
 23h	"SQLFRBF" get Roll Back flag
 24h	"SQLFRCD" get return code
 25h	"SQLFROW" get number of ROWs
 26h	"SQLFSCN" set cursor name
 27h	"SQLFSIL" set isolation level
 28h	"SQLFSLP" set log parameters
 29h	"SQLFSSB" set select buffer
 2Ah	"SQLFSSS" set sort space
 2Bh	"SQLFRLO" read long
 2Ch	"SQLFWLO" write long
 2Dh	"SQLFLSK" long seek
 2Eh	"SQLFGLS" get long size
 2Fh	"SQLFELO" end long operation
 30h	"SQLFRBK" roll back a transaction from the database
 31h	"SQLFERR" error message
 32h	"SQLFCPY" copy
 33h	"SQLFR01" reserved
 34h	"SQLFSYS" system
 35h	"SQLFSTA" statistics
 36h	"SQLFR02" reserved
 37h	"SQLFXAD" extra add
 38h	"SQLFXCN" extra character to number
 39h	"SQLFXDA" extra date add
 3Ah	"SQLFXDP" extra date picture
 3Bh	"SQLFXDV" extra divide
 3Ch	"SQLFXML" extra multiply
 3Dh	"SQLFXNP" extra number picture
 3Eh	"SQLFXPD" extra picture date
 3Fh	"SQLFXSB" extra subtract
 40h	"SQLFINS" install database
 41h	"SQLFDIN" deinstall database
 42h	"SQLFDIR" directory of databases
 43h	"SQLFTIO" timeout
 44h	"SQLFFQN" get fully qualified column name
 45h	"SQLFEXP" explain execution plan
 46h	"SQLFFER" get full error
 47h	"SQLFBKP" begin online backup
 48h	"SQLFRDC" read backup data chunk
 49h	"SQLFEBK" end backup
 4Ah	"SQLFRES" begin restore from backup
 4Bh	"SQLFWDC" write backup data chunk for restore
 4Ch	"SQLFRRD" recover restored database to consistent state
 4Dh	"SQLFERS" end restore
 4Eh	"SQLFNRR" return number of result set rows
 4Fh	"SQLFSTR" start restriction mode
 50h	"SQLFSPR" stop restriction mode
 51h	"SQLFCNC" connect 2
 52h	"SQLFCNR" connect with no recovery
 53h	"SQLFOMS" set output message size
 54h	"SQLFIMS" set input message size
 55h	"SQLFSCP" set cache pages
 56h	"SQLFDSC" describe items of a SELECT statement (external)
 57h	"SQLFLAB" get label info for items in SELECT statement
 58h	"SQLFCBV" clear bind variables
 59h	"SQLFGET" get database information
 5Ah	"SQLFSET" set database information
 5Bh	"SQLFTEC" translate error code

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478001 - INT 47 - SQL Base - GET VERSION NUMBER

INT 47 - SQL Base - GET VERSION NUMBER
	AX = 8001h
Return: ???
Program: SQL Base is a network-oriented database engine by Gupta Technologies
SeeAlso: AX=8000h

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50 - INT 50 - TI Professional PC - FATAL SOFTWARE ERROR TRAP

INT 50 - TI Professional PC - FATAL SOFTWARE ERROR TRAP
Desc:	the default handler generates a System Error message and halts the
	  computer such that only Ctrl-Alt-Del can restart operation
Note:	documented as "for system use only"; intended for multi-tasking
	  software
SeeAlso: INT 40"TI Professional",INT 4F"TI Professional"
SeeAlso: INT 51"TI Professional",INT 53"TI Professional"

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51 - INT 51 - TI Professional PC - RESTART TIMING EVENT

INT 51 - TI Professional PC - RESTART TIMING EVENT
	AX = timer count in 25ms intervals
	DS:DI -> timing-event table (see #03244)
Note:	documented as "for system use only"; intended for multi-tasking
	  software
SeeAlso: INT 50"TI Professional",INT 52"TI Professional"

Format of TI Professional PC timing event table:
Offset	Size	Description	(Table 03244)
 00h	WORD	offset of next event table entry
 02h	BYTE	normally unused (FFh)
 03h	BYTE	flags:
		bit 7 set if timing event active
		bits 6-0 not used by BIOS (0), but could be used by option ROMs
 04h	WORD	timeout count (decremented every 25ms when active)
 06h	WORD	offset of event handler (in segment F400h) to call on event
		  timeout; the F400h segment allows addressing both system ROMs
		  and the first 16K of memory (due to the 1M memory wraparound)

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52 - INT 52 - TI Professional PC - CANCEL TIMING EVENT

INT 52 - TI Professional PC - CANCEL TIMING EVENT
	DS:DI -> timing-event table (see #03244)
Note:	documented as "for system use only"; intended for multi-tasking
	  software
SeeAlso: INT 51"TI Professional",INT 53"TI Professional"

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53 - INT 53 - TI Professional PC - SVC INTERFACE

INT 53 - TI Professional PC - SVC INTERFACE
Notes:	documented as "for system use only"; intended for multi-tasking
	  software
	this interrupt is not used by the BIOS; the default handler generates
	  a system error trap (see INT 51"TI Professional")
SeeAlso: INT 50"TI Professional",INT 54"TI Professional"

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54 - INT 54 - TI Professional PC - ACTIVATE TASK SUBROUTINE

INT 54 - TI Professional PC - ACTIVATE TASK SUBROUTINE
Notes:	documented as "for system use only"; intended for multi-tasking
	  software
	this interrupt is not used by the BIOS; the default handler generates
	  a system error trap (see INT 51"TI Professional")
SeeAlso: INT 50"TI Professional",INT 53"TI Professional"

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60899B - INT 60 U - Agfa TTSR.EXE - API

INT 60 U - Agfa TTSR.EXE - API
	AX = 899Bh
	BX = function
	    0001h installation check
		Return: BX = 899Bh if installed
	    0002h ???
	    0003h ???
	???
Return: ???
Note:	TTSR.EXE is found in FotoLook 2.09 (16-bit), which is available from
	  agfa.com; it appears to provide DOS ASPI support
!!!

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62 - INT 62 - MS SQL Server/Sybase DBLIBRARY interface - ???

INT 62 - MS SQL Server/Sybase DBLIBRARY interface - ???
	AH = function (00h to 07h)
	CX = FFFEh
	DX = FFFFh
	???
Return: ???
InstallCheck:	test for the string "DBLIBRARY" two bytes past the interrupt
	  handler
SeeAlso: AH=08h"SQL"
Index:	installation check;MS SQL Server|installation check;Sybase DBLIBRARY

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62 - INT 62 - MPAUSE - ???

INT 62 - MPAUSE - ???
	details not yet avialable
Program: MPAUSE is a program by Manfred Michael which appeared in the German
	 _EGA-Handbuch_ from  m&t-Verlag

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62 - INT 62 - PC-DRAFT - PRIMARY DISPLAY DRIVER

INT 62 - PC-DRAFT - PRIMARY DISPLAY DRIVER
	???
Return: ???
Program: PC-DRAFT is a powerful CAD environment by rhv.
SeeAlso: INT 64"PC-DRAFT",INT 65"PC-DRAFT",INT 66"PC-DRAFT",INT 67"PC-DRAFT"

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6208--CXFFFE - INT 62 - MS SQL Server/Sybase DBLIBRARY interface - UNINSTALL/GET PSP ADDR

INT 62 - MS SQL Server/Sybase DBLIBRARY interface - UNINSTALL/GET PSP ADDR
	AH = 08h
	CX = FFFEh
	DX = FFFFh
Return: AX = PSP address of resident DBLIBRARY
Note:	this call does not free the memory allocated to the TSR; the calling
	  code must do the deallocation.
SeeAlso: INT 62"DBLIBRARY"

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63 - INT 63 - Oracle SQL Protected Mode Executive - ???

INT 63 - Oracle SQL Protected Mode Executive - ???

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63 - INT 63 - Kofax KF9X00 image manipulation card interface

INT 63 - Kofax KF9X00 image manipulation card interface

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64 - INT 64 - Oracle SQL Protected Mode Executive - ???

INT 64 - Oracle SQL Protected Mode Executive - ???

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64 - INT 64 - PC-DRAFT - ASYNCHRONOUS DRIVER

INT 64 - PC-DRAFT - ASYNCHRONOUS DRIVER
	???
Return: ???
Program: PC-DRAFT is a powerful CAD environment by rhv.
SeeAlso: INT 62"PC-DRAFT",INT 65"PC-DRAFT",INT 66"PC-DRAFT",INT 67"PC-DRAFT"

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65 - INT 65 - PC-DRAFT - SECONDARY DISPLAY DRIVER

INT 65 - PC-DRAFT - SECONDARY DISPLAY DRIVER
	???
Return: ???
Program: PC-DRAFT is a powerful CAD environment by rhv.
SeeAlso: INT 62"PC-DRAFT",INT 64"PC-DRAFT",INT 66"PC-DRAFT",INT 67"PC-DRAFT"

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66 - INT 66 - PC-DRAFT - TABLET/DIGITIZER DRIVER

INT 66 - PC-DRAFT - TABLET/DIGITIZER DRIVER
	???
Return: ???
Program: PC-DRAFT is a powerful CAD environment by rhv.
SeeAlso: INT 62"PC-DRAFT",INT 64"PC-DRAFT",INT 65"PC-DRAFT",INT 67"PC-DRAFT"

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67 - INT 67 - PC-DRAFT - KEYBOARD DRIVER

INT 67 - PC-DRAFT - KEYBOARD DRIVER
	???
Return: ???
Program: PC-DRAFT is a powerful CAD environment by rhv.
SeeAlso: INT 62"PC-DRAFT",INT 64"PC-DRAFT",INT 65"PC-DRAFT",INT 66"PC-DRAFT"

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684300 - INT 68 U - ??? - INSTALLATION CHECK???

INT 68 U - ??? - INSTALLATION CHECK???
	AX = 4300h
Return: AX = F386h if ???
	???
Note:	called by Novell DOS 7.0 EMM386.EXE
SeeAlso: AX=4400h,INT 41/AX=004Fh

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684400 - INT 68 U - ???

INT 68 U - ???
	AX = 4400h
	BX = ???
	CX = ???
	DX = ???
	DS:SI = real-mode address of protected-mode GDT
	ES:DI = real-mode address of protected-mode IDT
Return: ???
Note:	called by Novell DOS 7.0 EMM386.EXE if AX=4300h returns AX=F386h
SeeAlso: AX=4300h

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6B6B - INT 6B - Tandy SCHOOLMATE PLUS - API

INT 6B - Tandy SCHOOLMATE PLUS - API
	AH = 6Bh
	AL = E0h to FFh
Note:	details not yet available

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6C - INT 6C - system resume vector (CONVERTIBLE)

INT 6C - system resume vector (CONVERTIBLE)

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6C - INT 6C - DOS 3.2 Realtime Clock update

INT 6C - DOS 3.2 Realtime Clock update

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7A07D0 - INT 7A R - AutoCAD Device Interface - Compaq VGADI41.EXE - GET ENTRY POINT

INT 7A R - AutoCAD Device Interface - Compaq VGADI41.EXE - GET ENTRY POINT
	AX = 07D0h
Return: AX = ??? (0003h)
	BX = 0000h
	DX:CX -> ADI entry point (see AX=0001h)
SeeAlso: AX=0001h

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7A7A - INT 7A - Canon IX-30F Image Scanner SI3.SYS - INTERFACE

INT 7A - Canon IX-30F Image Scanner SI3.SYS - INTERFACE
	AH = 7Ah
	???
Return: AX = status
	    0000h success
	    000Eh undefined function code
Range:	unknown, selected by device driver commandline arguments

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7B - INT 7B - Novell XQL - XQL PRIMITIVES MANAGER API

INT 7B - Novell XQL - XQL PRIMITIVES MANAGER API
	DS:DX -> parameter block (see #03844)
Return: parameter block updated

(Table 03843)
Values for Novell XQL function number:
 00h	log in
 01h	log out
 02h	"tNewFcn"
 03h	"tFreeFcn"
 04h	"tMoveFldFcn"
 05h	"tFieldFcn"
 06h	"tDescribeFcn"
 07h	"tFetchFcn"
 08h	"tComputeFcn"
 09h	"tOrderFcn"
 0Ah	"tRestrictFcn"
 0Bh	"tJoinFcn"
 0Ch	"tInsertFcn"
 0Dh	"tUpdateFcn"
 0Eh	"tUpdallFcn"
 0Fh	"tRemoveFcn"
 10h	"tRemallFcn"
 11h	"tResetFcn"
 12h	"tTransFcn"
 13h	"tStatFcn"
 14h	"tDDCreFcn"
 15h	"tStoreFcn"
 16h	"tRecallFcn"
 17h	"tStopFcn"
 18h	"tDDFileFcn"
 19h	"tDDFieldFcn"
 1Ah	"tDDIndexFcn"
 1Bh	"tDDModFcn"
 1Ch	"tDDViewFcn"
 1Dh	"tDDDrpFcn"
 1Eh	"tDDPathFcn"
 1Fh	"tDDAttrFcn"
 20h	"tDDFcn"
 21h	"tSecurFcn"
 22h	"tUserFcn"
 23h	"tAccessFcn"
 24h	"tPswdFcn"
 25h	"tCharFcn"
 26h	"tVersionFcn"
 27h	"tCnvFcn"
 28h	"tValFcn"
 29h	"tMaskFcn"
SeeAlso: #03844

Format of XQL parameter block:
Offset	Size	Description	(Table 03844)
 00h  4 BYTEs	signature "XQLP"
 04h	WORD	function number (see #03843)
 06h	WORD	handle
 08h	WORD	status
 0Ah	WORD	session ID
 0Ch	var	data record (varies by function)
---function 00h---
 0Ch	DWORD	-> user name
 10h	DWORD	-> password
 14h	DWORD	-> dictionary
 18h	DWORD	-> filepath
 1Ch	DWORD	-> machine name
 20h	WORD	process ID
---function 01h---
 no additional fields???
---function 02h---
 0Ch	DWORD	-> filename
 10h	DWORD	-> owner name
 14h	WORD	open mode
---function 03h---
 no additional fields???
---function 04h---
 0Ch	WORD	"frompos"
 0Eh	WORD	"topos"
---function 05h---
 0Ch	WORD	subfunction
 0Eh	WORD	position
 10h	WORD	count
 12h	DWORD	-> field list
---function 06h---
 0Ch	WORD	subfunction
 0Eh	WORD	length of description
 10h	WORD	position
 12h	WORD	count
 14h	DWORD	pointer to description list
---function 07h---
 0Ch	WORD	data length
 0Eh	WORD	"op"
 10h	DWORD	"select"
 14h	DWORD	"reject"
 18h	DWORD	pointer to data buffer
---function 08h---
 0Ch	DWORD	-> field name
 10h	WORD	field type
 12h	WORD	field size
 14h	WORD	"flddec"
 16h	WORD	"explen"
 18h	DWORD	pointer to "expbuf"
---function 09h---
 0Ch	WORD	count
 0Eh	DWORD	-> field list
---function 0Ah---
 0Ch	WORD	"newexp"
 0Eh	WORD	"explen"
 10h	DWORD	-> "expbuf"
---function 0Bh---
 0Ch	DWORD	-> filename
 10h	DWORD	-> owner name
 14h	WORD	type of join
 16h	WORD	"pCount"
 18h	DWORD	-> "pNames"
 1Ch	WORD	"sCount"
 1Eh	DWORD	-> "sNames"
---functions 0Ch, 0Dh, 0Fh---
 0Ch	WORD	file count
 0Eh	DWORD	-> file list
 12h	DWORD	count
 16h	DWORD	-> buffer
---function 0Eh---
 0Ch	WORD	file count
 0Eh	DWORD	-> file list
 12h	WORD	"op"
 14h	DWORD	"select"
 18h	DWORD	"reject"
 1Ch	WORD	count
 1Eh	DWORD	-> "res"
 22h	DWORD	-> "comp"
---function 10h---
 0Ch	WORD	file count
 0Eh	DWORD	-> file list
 12h	WORD	"op"
 14h	DWORD	"select"
 18h	DWORD	"reject"
---function 11h---
 0Ch	DWORD	machine name
---function 12h---
 0Ch	WORD	option
---function 13h---
 0Ch	WORD	subfunction
 0Eh	WORD	length of buffer
 10h	DWORD	-> buffer
---function 14h---
 0Ch	WORD	subfunction
 0Eh	DWORD	-> filename
 12h	WORD	"create"
 14h	DWORD	-> pathname
 18h	DWORD	-> owner name
 1Ch	WORD	owner access restrictions
 1Eh	WORD	number of fields
 20h	DWORD	-> field list
 24h	WORD	number of keys
 28h	DWORD	-> key list
 2Ch	WORD	"buflen"
 2Eh	DWORD	-> create parameters
---function 15h---
 0Ch	DWORD	-> "StoreName"
 10h	WORD	length of buffer
 12h	DWORD	-> buffer
---function 16h---
 0Ch	DWORD	-> "RecallName"
 10h	WORD	owner number
 12h	DWORD	-> owner list
 16h	WORD	open mode
 18h	WORD	length of buffer
 1Ah	DWORD	-> buffer
---function 17h---
 no additional fields???
---function 18h---
 0Ch	WORD	"rtype"
 0Eh	WORD	count
 10h	DWORD	-> "filebuf"
 14h	WORD	length of following buffer
 16h	DWORD	-> output buffer
---functions 19h, 1Ah---
 0Ch	WORD	"rtype"
 0Eh	WORD	count
 10h	DWORD	-> field buffer
 14h	WORD	length of following buffer
 16h	DWORD	-> output buffer
---function 1Bh---
 0Ch	WORD	subfunction
 0Eh	DWORD	-> filename
 12h	WORD	"create"
 14h	DWORD	-> pathname
 18h	DWORD	-> owner name
 1Ch	WORD	owner access restrictions
 1Eh	WORD	field count
 20h	DWORD	-> field list
 24h	WORD	number of keys
 26h	DWORD	-> list of keys
---function 1Ch---
 0Ch	WORD	count
 0Eh	DWORD	-> view name
 12h	WORD	length of following buffer
 14h	DWORD	-> output buffer
---function 1Dh---
 0Ch	DWORD	-> filename
 10h	WORD	file type
 12h	WORD	"deletepath"
---function 1Eh---
 0Ch	WORD	"dirtype"
 0Eh	DWORD	-> pathname
---function 1Fh---
 0Ch	WORD	function
 0Eh	DWORD	-> field name
 12h	WORD	attribute
 14h	WORD	size of buffer
 16h	DWORD	-> buffer for attributes
---function 20h---
 0Ch	DWORD	-> directory path
 10h	WORD	function
---function 21h---
 0Ch	DWORD	-> master password
 10h	WORD	"securityflag"
---function 22h---
 0Ch	DWORD	-> master password
 10h	WORD	function (add/modify/remove)
 12h	DWORD	-> user name
 16h	DWORD	-> password
 1Ah	WORD	global rights
 1Ch	WORD	count
 1Eh	WORD	length of following buffer
 20h	DWORD	-> "userbuf"
---function 23h---
 0Ch	DWORD	-> master password
 10h	DWORD	-> user name
 14h	WORD	function (allow/deny/getrights)
 16h	WORD	rights
 18h	DWORD	-> filename
 1Ch	WORD	number of field names in following buffer
 1Eh	DWORD	-> field names
 22h	WORD	maximum buffer length
 24h	DWORD	-> output buffer
---function 24h---
 0Ch	DWORD	-> user name
 10h	DWORD	-> password
---function 25h---
 0Ch	WORD	"charFcn"
 0Eh	WORD	"charType"
 10h	WORD	"charValue"
---function 26h---
 0Ch	DWORD	-> buffer
---function 27h---
 0Ch	WORD	option
 0Eh	WORD	type
 10h	WORD	size
 12h	WORD	"dec"
 14h	WORD	"dsize"
 16h	DWORD	-> value
 1Ah	DWORD	-> "retval"
 1Eh	DWORD	-> mask
 22h	WORD	"justify"
---function 28h---
 0Ch	DWORD	-> field name
 10h	WORD	length of buffer
 12h	DWORD	-> buffer for data
---function 29h---
 0Ch	WORD	option
 0Eh	WORD	type
 10h	WORD	size
 12h	WORD	"dec"
 14h	WORD	length of mask
 16h	DWORD	-> mask

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7D - INT 7D - IBM DOS 6.1 E.EXE - ???

INT 7D - IBM DOS 6.1 E.EXE - ???
Note:	E.EXE checks whether this interrupt is in use (not 0000h:0000h),
	  and if it is used, attempts to load E55VGA.EX instead of the
	  default E.EX overlay.	 However, E55VGA.EX is not included in
	  IBM DOS 6.1.

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7F - INT 7F - Canon IXHND2 Scanner Interface

INT 7F - Canon IXHND2 Scanner Interface

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80 - INT 80 - Q-PRO4 - ???

INT 80 - Q-PRO4 - ???

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88 - INT 88h - WANG PC - GET CONFIGURATION

INT 88h - WANG PC - GET CONFIGURATION
	 AL = get info type
	     01h Get System Console
		Return: ES:BX -> Configuration structure (see #04089)
	     else: ???
SeeAlso: PORT 1010h"Wang",MEM F000h:0000h,MEM FC00h:3FC2h,INT 21/AX=4402h

Format of Wang PC System Console configuration structure:
Offset	Size	Description	(Table 04089)
 00h	WORD	version
 02h	WORD	memory size
 04h  2 WORDs	reserved
 08h	WORD	number of screens (1..4)
 0Ah  4 WORDs	offset of console screen info structure 1..4 within
		  configuration structure's segment (ES) (see #04090)

Format of Wang PC Screen Info structure:
Offset	Size	Description	(Table 04090)
 00h	BYTE	state
		(bit 7 set appears to indicate the active console that is
		  currently attached to the screen)
 01h	BYTE	scanoff
 02h	WORD	buffer segment
 04h	BYTE	colors
 05h	BYTE	row
 06h	BYTE	column
 07h	BYTE	attribute
		00h = ???
		02h = ???
		0Fh = white on black
 08h	BYTE	auxiliary mode
 09h	BYTE	auxiliary mode 2
SeeAlso: #04089

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E0 - INT E0 - DeskMate (Tandy) - DESK EXECUTIVE API

INT E0 - DeskMate (Tandy) - DESK EXECUTIVE API
	AX = function code (numerous)
	parameters passed in BX, DX, ES, DI, and/or BP
Return: AX = return from function
Program: DeskMate is a proprietary GUI from Tandy distributed with several
	  models of the Tandy 1000's, 2500's, 3000's, and laptops.  Retail
	  and runtime versions also exist.  Some Tandy's are designed to
	  boot directly into DeskMate.
SeeAlso: INT 15/AX=7002h,INT E1"DeskMate"

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E1 - INT E1 - DeskMate (Tandy) - TASK DATA SEGMENTS (NOT A VECTOR!)

INT E1 - DeskMate (Tandy) - TASK DATA SEGMENTS (NOT A VECTOR!)
Desc:	used to store data; the	low word of the vector is the data segment for
	  the first task; the high word is the data segment of the second task
	  (DeskMate supports 2-way task switching between small- or
	  medium-model applications)
Program: DeskMate is a proprietary GUI from Tandy distributed with several
	  models of the Tandy 1000's, 2500's, 3000's, and laptops.  Retail
	  and runtime versions also exist.  Some Tandy's are designed to
	  boot directly into DeskMate.
SeeAlso: INT E0"DeskMate"

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E4 - INT E4 - DIGITAL RESEARCH - FLAG INTERRUPT

INT E4 - DIGITAL RESEARCH - FLAG INTERRUPT
Note:	This interrupt corresponds with Concurrent CP/M-86 and is to get
	  an unused flag.
SeeAlso: INT E5"DIGITAL RESEARCH"

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E5 - INT E5 - DIGITAL RESEARCH - FIDDS INTERRUPT

INT E5 - DIGITAL RESEARCH - FIDDS INTERRUPT
Note:	This interrupt corresponds with Concurrent CP/M-86 and is for
	  "attachamatic" drives
SeeAlso: INT E4"DIGITAL RESEARCH",INT E6"CP/M"

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F101 - INT F1 - Common ISDN API (CAPI) v1.1 - "API-REGISTER" - INITIALIZE CAPI

INT F1 - Common ISDN API (CAPI) v1.1 - "API-REGISTER" - INITIALIZE CAPI
	AH = 01h
	ES:BX -> buffer for CAPI's use (refer to note below)
	CX = minimum number of pending messages
	DX = maximum simultaneous Level 3 connections
	SI = maximum concurrent received B3 data blocks
	DI = maximum B3 data block size
Return: AX = CAPI-assigned application ID
	    0000h on error
		BX = error number
		    1001h registration error
Range:	INT 00 to INT FF, selectable by program parameter
Notes:	the caller is required to provide at least 512 bytes of stack space
	the CAPI interrupt handler begins with a header which is nearly
	  identical to the IBM Interrupt Sharing Protocol header
	  (see #02568 at INT 2D"AMIS"), except that the short jump instruction
	  to a hardware reset handler at offset 09h is replaced by the
	  signature bytes "IA"
	the maximum length of a message is fixed at 180 bytes; the standard
	  document suggests using CX=10, DI=1, SI=7, and DI=130 for
	  applications which use only a single connection and standard
	  protocols
	the total size of the application-provided buffer must be at least
	  180*CX + DX*SI*DI bytes
SeeAlso: AH=02h,INT F1/AL=01h
Index:	installation check;Common ISDN API

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F1--01 - INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_REGISTER" - INITIALIZE CAPI

INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_REGISTER" - INITIALIZE CAPI
	AL = 01h
	AH = CAPI version number * 10 (14h for v2.0)
	ES:BX -> buffer for CAPI's use (refer to note below)
	CX = number of bytes for message buffer
	DX = maximum simultaneous logical (Level 3) connections
	SI = maximum concurrent received B3 data blocks (min. 2)
	DI = maximum B3 data block size (up to 2048 bytes)
Return: AX = CAPI-assigned application ID
	    0000h on error
		BX = error number
		    1001h registration error
Range:	INT 00 to INT FF, selectable by program parameter
Notes:	the caller is required to provide at least 512 bytes of stack space
	the CAPI interrupt handler begins with a header (see #04068) which is
	  nearly identical to the IBM Interrupt Sharing Protocol header
	  (see #02568 at INT 2D"AMIS"), except that the short jump instruction
	  to a hardware reset handler at offset 09h is zeroed out and the
	  entire header is inexplicably shortened by one byte
	the standard document suggests using 1024 + (1024*DX) bytes for the
	  message buffer for typical applications
	the total size of the application-provided buffer must be at least
	  CX + DX*SI*DI bytes
SeeAlso: AH=01h,INT F1/AL=02h
Index:	installation check;Common ISDN API

Format of CAPI v2.0 interrupt handler entry point:
Offset	Size	Description	(Table 04068)
 00h  2 BYTEs	short jump to actual start of interrupt handler, immediately
		  following this data block (EBh 0Fh)
 02h	DWORD	address of next handler in chain
 06h	WORD	signature 424Bh
 08h	BYTE	EOI flag (80h)
		80h primary hardware interrupt handler (will issue EOI)
 09h  2 BYTEs	reserved (0)
		(is short jump to hardware reset routine in ISP header)
 0Bh  4 BYTEs	signature "CAPI"
 0Fh  2 BYTEs	two-digit CAPI version number in ASCII ('20')
SeeAlso: #02568 at INT 2D

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F102 - INT F1 - Common ISDN API (CAPI) v1.1 - "API-RELEASE" - UNREGISTER FROM CAPI

INT F1 - Common ISDN API (CAPI) v1.1 - "API-RELEASE" - UNREGISTER FROM CAPI
	AH = 02h
	DX = application ID (see AH=01h)
Return: AX = status (0000h,1002h) (see #04069)
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: AH=01h,INT F1/AL=02h

(Table 04069)
Values for CAPI v1.1 error code:
 0000h	successful
 1001h	registration error
 1002h	invalid application ID
 1003h	message too small or incorrectly coded message number
 1004h	invalid command or subcommand
 1005h	message queue full
 1006h	message queue empty
 1007h	message(s) lost due to queue overflow
 1008h	error uninstalling
SeeAlso: #04070

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F1--02 - INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_RELEASE" - UNREGISTER FROM CAPI

INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_RELEASE" - UNREGISTER FROM CAPI
	AL = 02h
	AH = CAPI version number * 10 (14h for v2.0)
	DX = application ID (see INT F1/AL=01h)
Return: AX = status (0000h,11xxh) (see #04070)
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: AH=02h,INT F1/AL=01h,INT F1/AL=03h

(Table 04070)
Values for CAPI v2.0 error code:
 0000h	successful
 1001h	too many applications
 1002h	logical block size too small (must be at least 128 bytes)
 1003h	buffer > 64K
 1004h	message buffer too small (minimum 1024 bytes)
 1005h	too many logical connections requested
 1006h	reserved
 1007h	could not register because CAPI busy, try again
 1008h	OS resource unavailable (out of memory, etc.)
 1009h	COMMON-ISDN-API not installed
 100Ah	controller does not support external equipment
 100Bh	controller supports only external equipment
 1101h	invalid application ID
 1102h	illegal command or subcommand, or message too short
 1103h	message queue full
 1104h	queue empty
 1105h	queue overflowed (message lost)
 1106h	unknown notification parameter
 1107h	could not accept message because CAPI busy, try again
 1108h	OS resource unavailable (out of memory, etc.)
 1109h	COMMON-ISDN-API not installed
 110Ah	controller does not support external equipment
 110Bh	controller supports only external equipment
 2001h	message not supported in current state
 2002h	illegal controller/PLCI/NCCI
 2003h	out of PLCI
 2004h	out of NCCI
 2005h	out of LISTEN
 2006h	out of FAX resources (T.30 protocol)
 2007h	illegal message parameter coding
 3001h	unsupported B1 protocol
 3002h	unsupported B2 protocol
 3003h	unsupported B3 protocol
 3004h	unsupported B1 protocol parameter
 3005h	unsupported B2 protocol parameter
 3006h	unsupported B3 protocol parameter
 3007h	unsupported B protocol combination
 3008h	NCPI not supported
 3009h	unknown CIP value
 300Ah	unsupported flags (reserved bits set)
 300Bh	unsupported facility
 300Ch	data length not supported by current protocol
 300Dh	reset procedure not supported by current protocol
SeeAlso: #04069

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F103 - INT F1 - Common ISDN API (CAPI) v1.1 - "API-PUT-MESSAGE"

INT F1 - Common ISDN API (CAPI) v1.1 - "API-PUT-MESSAGE"
	AH = 03h
	DX = application ID (see AH=01h)
	ES:BX -> message to be sent (see #04071)
Return: AX = status (0000h,1002h,1003h,1004h,1005h) (see #04069)
Notes:	the caller is required to provide at least 512 bytes of stack space
	the message buffer may be reused as soon as this call returns
SeeAlso: AH=01h,AH=04h,INT F1/AL=03h

Format of CAPI message:
Offset	Size	Description	(Table 04071)
 00h	WORD	total message length, including header
 02h	WORD	application ID (see AH=01h)
 04h	BYTE	command (see #04072,#04073)
 05h	BYTE	subcommand (see #04072,#04073)
 06h	WORD	message sequence number
		0000h-7FFFh messages from application to CAPI (and replies)
		8000h-FFFFh messages from CAPI to application (and replies)
 08h	var	message data (max 172 bytes for v1.1 only)

(Table 04072)
Values for CAPI v1.1 message command/subcommand:
Cmd/SubCmd	Name			Description
 01h/00h    RESET-B3-REQ	request resetting of a Level 3 connection
 01h/01h    RESET-B3-CONF	confirm Level 3 connection reset
 01h/02h    RESET-B3-IND	indication from CAPI that Level 3 conn. reset
 01h/03h    RESET-B3-RESP	confirm receipt of RESET-B3-IND
 02h/00h    CONNECT-REQ		establish B-channel connection
 02h/01h    CONNECT-CONF	confirm start of connection establishment
 02h/02h    CONNECT-IND		indication from CAPI of incoming connection
 02h/03h    CONNECT-RESP	accept incoming connection
 03h/02h    CONNECT-ACTIVE-IND	indication that B-channel connection complete
 03h/03h    CONNECT-ACTIVE-RESP	confirm connection-complete indication
 04h/00h    DISCONNECT-REQ	request shutdown of B-channel connection
 04h/01h    DISCONNECT-CONF	confirm shutdown of B-channel connection
 04h/02h    DISCONNECT-IND	indication that B-channel is shutting down
 04h/03h    DISCONNECT-RESP	confirm that application knows of shutdown
 05h/00h    LISTEN-REQ		enable indication of incoming connections
 05h/01h    LISTEN-CONF		confirm enabling of incoming conn. indication
 06h/00h    GET-PARAMS-REQ	request B-channel parameters
 06h/01h    GET-PARAMS-CONF	return B-channel parameters
 07h/00h    INFO-REQ		set B-channel info to be signalled to app
 07h/01h    INFO-CONF		confirm B-channel info signalling
 07h/02h    INFO-IND		signal B-channel events to application
 07h/03h    INFO-CONF		confirm receipt of INFO-IND
 08h/00h    DATA-REQ		send D-channel data
 08h/01h    DATA-CONF		confirm receipt of DATA-REQ
 08h/02h    DATA-IND		receive D-channel data
 08h/03h    DATA-RESP		confirm receipt fo DATA-IND
 09h/00h    CONNECT-INFO-REQ	request connection information
 09h/01h    CONNECT-INFO-CONF	return connection information
 40h/00h    SELECT-B2-PROTOCOL-REQ  select Level 2 protocol
 40h/01h    SELECT-B2-PROTOCOL-CONF confirm receipt of SELECT-B2-PROTOCOL-REQ
 80h/00h    SELECT-B3-PROTOCOL-REQ  select Level 3 protocol
 80h/01h    SELECT-B3-PROTOCOL-CONF confirm receipt of SELECT-B3-PROTOCOL-REQ
 81h/00h    LISTEN-B3-REQ	enable notification of incoming Level 3 calls
 81h/01h    LISTEN-B3-CONF	confirm receipt of LISTEN-B3-REQ
 82h/00h    CONNECT-B3-REQ	establish Level 3 connection
 82h/01h    CONNECT-B3-CONF	confirm start of connection establishment
 82h/02h    CONNECT-B3-IND	indication of incoming Level 3 connection
 82h/03h    CONNECT-B3-RESP	accept incoming connection
 83h/02h    CONNECT-B3-ACTIVE-IND  indication that Level 3 connection complete
 83h/03h    CONNECT-B3-ACTIVE-RESP confirm connection-complete indication
 84h/00h    DISCONNECT-B3-REQ	request shutdown of Level 3 connection
 84h/01h    DISCONNECT-B3-CONF	confirm shutdown of Level 3 connection
 84h/02h    DISCONNECT-B3-IND	indication that Level 3 is shutting down
 84h/03h    DISCONNECT-B3-RESP	confirm that application knows of shutdown
 85h/00h    GET-B3-PARAMS-REQ	request Level 3 parameters
 85h/01h    GET-B3-PARAMS-CONF	return Level 3 parameters
 86h/00h    DATA-B3-REQ		send data on Level 3
 86h/01h    DATA-B3-CONF	confirm sending of Level 3 data
 86h/02h    DATA-B3-IND		indication of incoming Level 3 data
 86h/03h    DATA-B3-RESP	confirm receipt of Level 3 data
 87h/02h    HANDSET-IND		indication of Handset events
 87h/03h    HANDSET-RESP	confirm receipt of Handset event
 FFh/00h    MANUFACTURER-REQ	vendor-specific request
 FFh/01h    MANUFACTURER-CONF	vendor-specific request confirmation
 FFh/02h    MANUFACTURER-IND	vendor-specific notification
 FFh/03h    MANUFACTURER-RESP	vendor-specific notification confirmation
SeeAlso: #04071,#04073

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F1--03 - INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_PUT_MESSAGE"

INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_PUT_MESSAGE"
	AL = 03h
	AH = CAPI version number * 10 (14h for v2.0)
	DX = application ID (see INT F1/AL=01h)
	ES:BX -> message to be sent (see #04071)
Return: AX = status (0000h,11xxh) (see #04070)
Notes:	the caller is required to provide at least 512 bytes of stack space
	the message buffer may be reused as soon as this call returns
SeeAlso: AH=03h,INT F1/AL=01h,INT F1/AL=04h

(Table 04073)
Values for CAPI v2.0 message command/subcommand:
Cmd/SubCmd	Name			Description
 01h/80h    ALERT_REQ		indicate compatibility with incoming calls
 01h/81h    ALERT_CONF		confirm receipt of ALERT_REQ
 02h/80h    CONNECT_REQ		establish B-channel connection
 02h/81h    CONNECT_CONF	confirm start of connection establishment
 02h/82h    CONNECT_IND		indication from CAPI of incoming connection
 02h/83h    CONNECT_RESP	accept incoming connection
 03h/82h    CONNECT_ACTIVE_IND	indication that B-channel connection complete
 03h/83h    CONNECT_ACTIVE_RESP	confirm connection-complete indication
 04h/80h    DISCONNECT_REQ	request shutdown of B-channel connection
 04h/81h    DISCONNECT_CONF	confirm shutdown of B-channel connection
 04h/82h    DISCONNECT_IND	indication that B-channel is shutting down
 04h/83h    DISCONNECT_RESP	confirm that application knows of shutdown
 05h/80h    LISTEN_REQ		enable signalling on incoming events
 05h/81h    LISTEN_CONF		confirm enabling of incoming event signalling
 08h/80h    INFO_REQ		send protocol information for physical connect
 08h/81h    INFO_CONF		confirm INFO_REQ
 08h/82h    INFO_IND		indicate event for physical connection
 08h/83h    INFO_CONF		confirm receipt of INFO_IND
 41h/80h    SELECT_B_PROTOCOL_REQ   change protocol on already-active connect
 41h/81h    SELECT_B_PROTOCOL_CONF  confirm receipt of SELECT_B_PROTOCOL_REQ
 80h/80h    FACILITY_REQ	control optional facilities
 80h/81h    FACILITY_CONF	confirm acceptance of FACILITY_REQ
 80h/82h    FACILITY_IND	indicate facility-dependent event
 80h/83h    FACILITY_RESP	confirm receipt of FACILITY_IND
 82h/80h    CONNECT_B3_REQ	establish Level 3 connection
 82h/81h    CONNECT_B3_CONF	confirm start of connection establishment
 82h/82h    CONNECT_B3_IND	indication of incoming Level 3 connection
 82h/83h    CONNECT_B3_RESP	accept incoming connection
 83h/82h    CONNECT_B3_ACTIVE_IND  indication that Level 3 connection complete
 83h/83h    CONNECT_B3_ACTIVE_RESP confirm connection-complete indication
 84h/80h    DISCONNECT_B3_REQ	request shutdown of Level 3 connection
 84h/81h    DISCONNECT_B3_CONF	confirm shutdown of Level 3 connection
 84h/82h    DISCONNECT_B3_IND	indication that Level 3 is shutting down
 84h/83h    DISCONNECT_B3_RESP	confirm that application knows of shutdown
 85h/80h    GET_B3_PARAMS_REQ	request Level 3 parameters
 85h/81h    GET_B3_PARAMS_CONF	return Level 3 parameters
 86h/80h    DATA_B3_REQ		send data on Level 3
 86h/81h    DATA_B3_CONF	confirm sending of Level 3 data
 86h/82h    DATA_B3_IND		indication of incoming Level 3 data
 86h/83h    DATA_B3_RESP	confirm receipt of Level 3 data
 87h/80h    RESET_B3_REQ	request resetting of a logical connection
 87h/81h    RESET_B3_CONF	confirm logical connection reset
 87h/82h    RESET_B3_IND	indication from CAPI that logical conn. reset
 87h/83h    RESET_B3_RESP	confirm receipt of RESET_B3_IND
 88h/82h    CONNECT_B3_T90_ACTIVE_IND  indicate switch from T.70 to T.90
 88h/83h    CONNECT_B3_T90_ACTIVE_RESP confirm receipt of T90_ACTIVE_IND
 FFh/80h    MANUFACTURER_REQ	vendor-specific request
 FFh/81h    MANUFACTURER_CONF	vendor-specific request confirmation
 FFh/82h    MANUFACTURER_IND	vendor-specific notification
 FFh/83h    MANUFACTURER_RESP	vendor-specific notification confirmation
SeeAlso: #04071,#04072

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F104 - INT F1 - Common ISDN API (CAPI) v1.1 - "API-GET-MESSAGE"

INT F1 - Common ISDN API (CAPI) v1.1 - "API-GET-MESSAGE"
	AH = 04h
	DX = application ID (see AH=01h)
Return: AX = status (0000h,1002h,1006h,1007h) (see #04069)
	ES:BX -> message if successful (see #04071)
Range:	INT 00 to INT FF, selectable by program parameter
Notes:	the caller is required to provide at least 512 bytes of stack space
	the returned message may be overwritten by the next call to this
	  function
SeeAlso: AH=03h

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F1--04 - INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_GET_MESSAGE"

INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_GET_MESSAGE"
	AL = 04h
	AH = CAPI version number * 10 (14h for v2.0)
	DX = application ID (see AH=01h)
Return: AX = status (0000h,11xxh) (see #04070)
	ES:BX -> message if successful (see #04071)
Range:	INT 00 to INT FF, selectable by program parameter
Notes:	the caller is required to provide at least 512 bytes of stack space
	the returned message may be overwritten by the next call to this
	  function
SeeAlso: AH=04h,INT F1/AL=03h

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F105 - INT F1 - Common ISDN API (CAPI) v1.1 - "API-SET-SIGNAL" - SIGNAL HANDLING

INT F1 - Common ISDN API (CAPI) v1.1 - "API-SET-SIGNAL" - SIGNAL HANDLING
	AH = 05h
	DX = application ID (see AH=01h)
	ES:BX -> signal handler or 0000h:0000h to disable
Return: AX = status (0000h,1002h) (see #04069)
Notes:	the caller is required to provide at least 512 bytes of stack space
	the signal handler is called as though it were an interrupt, with
	  interrupts disabled; the handler must preserve all registers and
	  return with an IRET
SeeAlso: AH=01h

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F1--05 - INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_SET_SIGNAL" - SIGNAL HANDLING

INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_SET_SIGNAL" - SIGNAL HANDLING
	AL = 05h
	AH = CAPI version number * 10 (14h for v2.0)
	DX = application ID (see AH=01h)
	ES:BX -> signal handler or 0000h:0000h to disable
	SI:DI = parameter to pass to signal handler
Return: AX = status (0000h,11xxh) (see #04070)
Notes:	the caller is required to provide at least 512 bytes of stack space
	the signal handler is called as though it were an interrupt, with
	  interrupts disabled and DX,SI,DI set as they were when this function
	  was called; the handler must preserve all registers and return with
	  an IRET
	the signal handler may call CAPI_PUT_MESSAGE, CAPI_GET_MESSAGE, and
	  CAPI_SET_SIGNAL
SeeAlso: INT F1/AL=01h

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F106 - INT F1 - Common ISDN API (CAPI) v1.1 - "API-DEINSTALL" - UNINSTALL

INT F1 - Common ISDN API (CAPI) v1.1 - "API-DEINSTALL" - UNINSTALL
	AH = 06h
	BX = force flag
	    0000h normal uninstall
	    0001h forced uninstall
Return: AX = status (0000h,1008h) (see #04069)
Desc:	reset ISDN controller, close all ISDN Level 1 connections except for
	  telephone connections
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: INT F1/AL=01h,INT F1/AH=01h

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F1F0 - INT F1 - Common ISDN API (CAPI) v1.1 - "API-GET-MANUFACTURER"

INT F1 - Common ISDN API (CAPI) v1.1 - "API-GET-MANUFACTURER"
	AH = F0h
	ES:BX -> 64-byte buffer for manufacturer identification information
Return: ES:BX buffer filled with ASCIZ idnetification string
Range:	INT 00 to INT FF, selectable by program parameter
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: AH=01h,AH=F1h,AH=F2h,AH=FFh,INT F1/AL=F0h

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F1--F0 - INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_GET_MANUFACTURER"

INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_GET_MANUFACTURER"
	AL = F0h
	AH = CAPI version number * 10 (14h for v2.0)
	ES:BX -> 64-byte buffer for manufacturer identification information
Return: ES:BX buffer filled with ASCIZ idnetification string
Range:	INT 00 to INT FF, selectable by program parameter
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: AH=F0h,INT F1/AL=01h,INT F1/AL=F1h,INT F1/AL=F2h,INT F1/AL=FFh

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F1F1 - INT F1 - Common ISDN API (CAPI) v1.1 - "API-GET-VERSION"

INT F1 - Common ISDN API (CAPI) v1.1 - "API-GET-VERSION"
	AH = F1h
	ES:BX -> 64-byte buffer for CAPI version number
Return: ES:BX buffer filled with ASCIZ version string
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: AH=01h,AH=F0h,AH=F2h,AH=FFh

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F1--F1 - INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_GET_VERSION"

INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_GET_VERSION"
	AL = F1h
	AH = CAPI version number * 10 (14h for v2.0)
Return: AH = CAPI major version number
	AL = CAPI minor version number
	DH = vendor-specific major version
	DL = vendor-specific minor version
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: AH=F1h,INT F1/AL=01h,INT F1/AL=F0h,INT F1/AL=F2h,INT F1/AL=FFh

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F1F2 - INT F1 - Common ISDN API (CAPI) v1.1 - "API-GET-SERIAL-NUMBER"

INT F1 - Common ISDN API (CAPI) v1.1 - "API-GET-SERIAL-NUMBER"
	AH = F2h
	ES:BX -> 64-byte buffer for CAPI serial number
Return: ES:BX buffer filled with ASCIZ serial number (seven digits), empty
	      string if no serial number
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: AH=01h,AH=F0h,AH=F1h,AH=FFh

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F1--F2 - INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_GET_SERIAL_NUMBER"

INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_GET_SERIAL_NUMBER"
	AL = F2h
	AH = CAPI version number * 10 (14h for v2.0)
	ES:BX -> 64-byte buffer for CAPI serial number
Return: ES:BX buffer filled with ASCIZ serial number (seven digits), empty
	      string if no serial number
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: AH=F2h,INT F1/AL=01h,INT F1/AL=F0h,INT F1/AL=F1h,INT F1/AL=F3h

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F1--F3 - INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_GET_PROFILE" - GET CAPABILITIES

INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_GET_PROFILE" - GET CAPABILITIES
	AL = F3h
	AH = CAPI version number * 10 (14h for v2.0)
	ES:BX -> 64-byte buffer for CAPI capabilities (see #04074)
	CX = controller number (01h-06h) or 0000h to get number of controllers
Return: AX = status (0000h,11xxh) (see #04070)
	ES:BX buffer filled if successful
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: INT F1/AL=01h,INT F1/AL=F0h,INT F1/AL=F2h,INT F1/AH=FFh

Format of CAPI v2.0 capabilities:
Offset	Size	Description	(Table 04074)
 00h	WORD	number of installed controllers
 02h	WORD	number of supported B channels
 04h	DWORD	global options (see #04075)
 08h	DWORD	B1 protocol support flags (see #04076)
 0Ch	DWORD	B2 protocol support flags (see #04077)
 10h	DWORD	B3 protocol support flags (see #04078)
 14h 24 BYTEs	reserved for CAPI use
 2Ch 20 BYTEs	vendor-specific information

Bitfields for CAPI v2.0 global options:
Bit(s)	Description	(Table 04075)
 0	internal controller supported
 1	external controller supported
 2	handset supported (only if bit 1 also set)
 3	DTMF supported
 4-31	reserved (0)
SeeAlso: #04074

Bitfields for CAPI v2.0 B1 protocol support:
Bit(s)	Description	(Table 04076)
 0	64k bps with HDLC framing (required, always set)
 1	64k bps bit-transparent operation with network byte framing
 2	V.110 asynchronous with start/stop byte framing
 3	V.110 synchronous with HDLC framing
 4	T.30 modem for group 3 FAX
 5	64k bps inverted with HDLC framing
 6	56k bps bit-transparent operation with network byte framing
 7-31	reserved (0)
SeeAlso: #04074

Bitfields for CAPI v2.0 B2 protocol support:
Bit(s)	Description	(Table 04077)
 0	ISO 7776 (X.75 SLP) (required, always set)
 1	transparent
 2	SDLC
 3	Q.921 LAPD (D-channel X.25)
 4	T.30 for group 3 FAX
 5	point-to-point protocol (PPP)
 6	transparent (ignoring B1 framing errors)
 7-31	reserved (0)
SeeAlso: #04074

Bitfields for CAPI v2.0 B3 protocol support:
Bit(s)	Description	(Table 04078)
 0	transparent (required, always set)
 1	T.90NL with T.70NL compatibility
 2	ISO 8208 (X.25 DTE-DTE)
 3	X.25 DCE
 4	T.30 for group 3 FAX
 5-31	reserved (0)
SeeAlso: #04074

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F1FF - INT F1 - Common ISDN API (CAPI) v1.1 - "API-MANUFACTURER" - VENDOR-SPECIFIC

INT F1 - Common ISDN API (CAPI) v1.1 - "API-MANUFACTURER" - VENDOR-SPECIFIC
	AH = FFh
	other registers vendor-specific
Return: registers vendor-specific
Range:	INT 00 to INT FF, selectable by program parameter
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: AH=01h,AH=F0h,AH=F1h,AH=F2h,INT F1/AH=FFh

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F1--FF - INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_MANUFACTURER" - VENDOR-SPECIFIC

INT F1 - Common ISDN API (CAPI) v2.0 - "CAPI_MANUFACTURER" - VENDOR-SPECIFIC
	AL = FFh
	AH = CAPI version number * 10 (14h for v2.0)
	other registers vendor-specific
Return: registers vendor-specific
Range:	INT 00 to INT FF, selectable by program parameter
Notes:	the caller is required to provide at least 512 bytes of stack space
SeeAlso: AH=FFh,INT F1/AL=01h,INT F1/AL=F0h,INT F1/AL=F1h,INT F1/AL=F2h

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F2 - INT F2 - ICCTSR 1.0 - ImageCapture COLOR Developer's Kit - API

INT F2 - ICCTSR 1.0 - ImageCapture COLOR Developer's Kit - API
	AH = function number (see #04079)
	???
Return: ???
Program: ImageCapture is a product of International Computers
SeeAlso: INT F3"ICCTSR"

(Table 04079)
Values for ImageCapture function:
 01h	power up
 02h	power down
 03h	set controls
 04h	capture image
 05h	display image
 06h	read file
 07h	write file
 08h	write array
 09h	read pixel
 0Ah	write pixel
 0Bh	check if VGA present
 0Ch	set video mode
 0Dh	check for keystroke
 0Eh	delay

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F3 - INT F3 - ICCTSR 1.0 - HANDSHAKE ID VECTOR

INT F3 - ICCTSR 1.0 - HANDSHAKE ID VECTOR
Program: ImageCapture is a product of International Computers
SeeAlso: INT F2"ICCTSR"

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F700 - INT F7 - FSBBS 2.0 - CONFIGURATION RECORD

INT F7 - FSBBS 2.0 - CONFIGURATION RECORD
	AH = 00h
	AL = function
	    00h get configuration record
		Return: DS:DX -> configuration record
	    01h set configuration record
		Return: nothing
	    02h get path for option
		DS:DX -> option name
		Return: DS:DX -> path
	    03h determine whether configuration record set
		Return: AX = status
			    0000h set
			    0001h not yet set
	    04h get link state
		Return: AX = state
			    0000h unlinked
			    0001h linked
Notes:	this information is preliminary and still subject to change
	all of the INT F7 calls for FSBBS are used for interprogram
	  communication between the BBS kernel and the programs it spawns
SeeAlso: AH=01h

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F701 - INT F7 - FSBBS 2.0 - USER RECORD

INT F7 - FSBBS 2.0 - USER RECORD
	AH = 01h
	AL = function
	    00h get user record for user currently online
		Return: DS:DX -> user record
	    01h set user record
		DS:DX -> user record
		Return: nothing
SeeAlso: AH=00h,AH=02h

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F702 - INT F7 - FSBBS 2.0 - GET ACCOUNT NAME

INT F7 - FSBBS 2.0 - GET ACCOUNT NAME
	AH = 02h
Return: DS:DX -> 8-character blank-padded account name
SeeAlso: AH=01h

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F703 - INT F7 - FSBBS 2.0 - TERMINAL NUMBER

INT F7 - FSBBS 2.0 - TERMINAL NUMBER
	AH = 03h
	AL = function
	    00h get terminal index number
		Return: DX = index number
	    01h set terminal index number
		DX = terminal index
		Return: nothing

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F704 - INT F7 - FSBBS 2.0 - PASSDATA BUFFER

INT F7 - FSBBS 2.0 - PASSDATA BUFFER
	AH = 04h
	AL = function
	    00h get PassData buffer contents
		DS:DX -> buffer for PassData contents
		Return: DS:DX buffer filled
	    01h set PassData contents
		DS:DX -> buffer containing new PassData
		CH = length of data in buffer
		Return: nothing

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F705 - INT F7 - FSBBS 2.0 - TIMER FUNCTIONS

INT F7 - FSBBS 2.0 - TIMER FUNCTIONS
	AH = 05h
	AL = function
	    00h get time remaining
		Return: DX = number of minutes remaining
	    01h get current time
		Return: DS:DX -> 8-character time string
	    02h increment time
		DX = number of additional minutes
	    03h decrement time
		DX = number of minutes
SeeAlso: AH=06h

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F706 - INT F7 - FSBBS 2.0 - FUNCTION AVAILABILITY

INT F7 - FSBBS 2.0 - FUNCTION AVAILABILITY
	AH = 06h
	AL = function
	    00h determine whether function is available
		DX = index of function
	    01h set function availability
		DX = index of function
		???
Return: nothing
SeeAlso: AH=05h,AH=07h

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F707 - INT F7 - FSBBS 2.0 - DUMP FUNCTIONS

INT F7 - FSBBS 2.0 - DUMP FUNCTIONS
	AH = 07h
	AL = function
	    00h get current dump mode
		Return: DL = mode
	    01h set dump mode
		DL = mode
SeeAlso: AH=06h

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FA - INT FA P - ASM Edit - INSTALLATION CHECK

INT FA P - ASM Edit - INSTALLATION CHECK
Program: ASM Edit is a shareware programmer's editor
Note:	ASM Edit hooks this vector in protected mode to allow DPMI programs
	  to detect whether they were run while shelled to DOS from ASM Edit

Format of ASM Edit signature block:
Offset	Size	Description	(Table 04080)
 00h	BYTE	CFh (IRET)
 01h  8 BYTEs	signature "ASM Edit" (no trailing NUL)

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