interrup.o

A Programmer s Reference to BIOS, DOS, and Third-Party Calls

Interrupt List, part 15 of 18
Copyright (c) 1989-1999,2000 Ralf Brown
--------H-51---------------------------------
INT 51 - IRQ1 relocated by DESQview
Range:	INT 51 to INT F9, selected automatically
Note:	this is the default location for older versions; see INT 50"DESQview"
	  for details of interrupt relocation
SeeAlso: INT 50"DESQview",INT 54"DESQview",INT 58"DESQview"
--------H-51---------------------------------
INT 51 - IRQ1 relocated by IBM 3278 emulation control program
SeeAlso: INT 50"IBM 3278",INT 54"IBM 3278"
--------H-51---------------------------------
INT 51 - IRQ1 relocated by OS/2 v1.x
SeeAlso: INT 50"OS/2",INT 54"OS/2"
----------51---------------------------------
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)
--------b-51---------------------------------
INT 51 - Tandy 2000 - KEYBOARD SERVICES
Note:	this interrupt is identical to INT 16 on Tandy 2000
SeeAlso: INT 16/AH=00h,INT 16/AH=01h,INT 16/AH=02h,INT 16/AH=04h"Tandy"
SeeAlso: INT 16/AH=04h,INT 4A"Tandy 2000",INT 4C"Tandy 2000",INT 52"Tandy 2000"
--------H-52---------------------------------
INT 52 - IRQ2 relocated by DESQview
Range:	INT 52 to INT FA, selected automatically
Note:	this is the default location for older versions; see INT 50"DESQview"
	  for details of interrupt relocation
SeeAlso: INT 50"DESQview",INT 54"DESQview",INT 58"DESQview"
--------H-52---------------------------------
INT 52 - IRQ2 relocated by IBM 3278 emulation control program, OS/2 v1.x
SeeAlso: INT 50"IBM 3278",INT 51"OS/2"
----------52---------------------------------
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"
--------b-52---------------------------------
INT 52 - Tandy 2000 - VIDEO SERVICES
Note:	this interrupt is identical to INT 10
SeeAlso: INT 10/AH=00h,INT 10/AH=01h,INT 10/AH=08h,INT 10/AH=0Eh
SeeAlso: INT 4A"Tandy 2000",INT 51"Tandy 2000",INT 53"Tandy 2000"
--------H-53---------------------------------
INT 53 - IRQ3 relocated by DESQview
Range:	INT 53 to INT FB, selected automatically
Note:	this is the default location for older versions; see INT 50"DESQview"
	  for details of interrupt relocation
SeeAlso: INT 50"DESQview",INT 54"DESQview",INT 58"DESQview"
--------H-53---------------------------------
INT 53 - IRQ3 relocated by IBM 3278 emulation control program, OS/2 v1.x
SeeAlso: INT 50"IBM 3278",INT 51"OS/2"
----------53---------------------------------
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"
--------b-53---------------------------------
INT 53 - Tandy 2000 - SERIAL COMMUNICATIONS
Note:	this interrupt is identical to INT 14 on Tandy 2000
SeeAlso: INT 14/AH=00h"SERIAL",INT 14/AH=01h,INT 14/AH=02h,INT 14/AH=03h
SeeAlso: INT 14/AH=04h"Tandy 2000",INT 52"Tandy 2000",INT 54"Tandy 2000"
--------N-53---------------------------------
INT 53 - WEB??? - API
	BX = function
	    0000h ???
		AX = ???
		Return: AX = ???
	    0004h ???
	    0009h ???
	    0015h
		AX = ???
		DX = ???
	    0017h
Return: ???
InstallCheck:	check for the signature "WEBCO" immediately prior to the
	  interrupt handler
Note:	the above calls are made by Show Partner F/X v3.6 (see INT 10/AH=53h)
Index:	installation check;unknown|installation check;WEBCO
--------H-54---------------------------------
INT 54 - IRQ4 relocated by DESQview
Range:	INT 54 to INT FC, selected automatically
Note:	this is the default location for older versions; see INT 50"DESQview"
	  for details of interrupt relocation
SeeAlso: INT 50"DESQview",INT 58"DESQview"
--------H-54---------------------------------
INT 54 - IRQ4 relocated by IBM 3278 emulation control program, OS/2 v1.x
SeeAlso: INT 51"IBM 3278",INT 51"OS/2"
----------54---------------------------------
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"
--------b-54---------------------------------
INT 54 - Tandy 2000 - LINE PRINTER
Note:	this interrupt is identical to INT 17 on Tandy 2000
SeeAlso: INT 17/AH=00h,INT 17/AH=01h,INT 17/AH=02h,INT 4A"Tandy 2000"
SeeAlso: INT 53"Tandy 2000",INT 55"Tandy 2000"
--------X-545400-----------------------------
INT 54 U - Toshiba PCMCIA2 - INSTALLATION CHECK
	AX = 5400h
Return: AX = 0054h if installed
	    CX:DX -> INT function handler
--------H-55---------------------------------
INT 55 - IRQ5 relocated by DESQview
Range:	INT 55 to INT FD, selected automatically
Note:	this is the default location for older versions; see INT 50"DESQview"
	  for details of interrupt relocation
SeeAlso: INT 50"DESQview",INT 58"DESQview"
--------H-55---------------------------------
INT 55 - IRQ5 relocated by IBM 3278 emulation control program, OS/2 v1.x
SeeAlso: INT 51"IBM 3278",INT 51"OS/2"
--------b-55---------------------------------
INT 55 - TI Professional PC - RESERVED FOR FUTURE USE
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 56"TI Professional"
--------b-55---------------------------------
INT 55 - Tandy 2000 - SYSTEM CLOCK
Note:	this interrupt is identical to INT 1A on Tandy 2000
SeeAlso: INT 1A/AH=00h,INT 1A/AH=01h,INT 1A/AH=02h"Tandy 2000"
SeeAlso: INT 1A/AH=03h"Tandy 2000",INT 54"Tandy 2000",INT 56"Tandy 2000"
--------H-56---------------------------------
INT 56 - IRQ6 relocated by DESQview
Range:	INT 56 to INT FE, selected automatically
Note:	this is the default location for older versions; see INT 50"DESQview"
	  for details of interrupt relocation
SeeAlso: INT 50"DESQview",INT 58"DESQview"
--------H-56---------------------------------
INT 56 - IRQ6 relocated by IBM 3278 emulation control program, OS/2 v1.x
SeeAlso: INT 51"IBM 3278",INT 51"OS/2"
--------b-56---------------------------------
INT 56 - TI Professional PC - RESERVED FOR FUTURE USE
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 55"TI Professional"
--------b-56---------------------------------
INT 56 - Tandy 2000 - FLOPPY DISK SERVICES
Note:	this interrupt is identical to INT 13 on Tandy 2000
SeeAlso: INT 13/AH=00h,INT 13/AH=01h,INT 13/AH=02h,INT 13/AH=03h
SeeAlso: INT 4A"Tandy 2000",INT 51"Tandy 2000",INT 55"Tandy 2000"
--------H-57---------------------------------
INT 57 - IRQ7 relocated by DESQview
Range:	INT 57 to INT FF, selected automatically
Note:	this is the default location for older versions; see INT 50"DESQview"
	  for details of interrupt relocation
SeeAlso: INT 50"DESQview",INT 58"DESQview"
--------H-57---------------------------------
INT 57 - IRQ7 relocated by IBM 3278 emulation control program, OS/2 v1.x
SeeAlso: INT 51"IBM 3278",INT 51"OS/2"
--------b-57---------------------------------
INT 57 C - TI Professional PC - CRT MAPPING HOOK
	AX/BX/CX/DX/BP/SI/DI same as on entry to CRT subroutine (e.g. INT 49)
	DS = BIOS system segment
	ES = DE00h
Return: DF/IF flags must be preserved
	ES,DS,BP preserved
	AX,BX,CX,DX,SI,DI may be changed as necessary to modify the original
	  call
Desc:	hooking this vector permits programs to intercept or modify all
	  screen output, including both application calls to INT 49 and
	  calls generated internally by the BIOS which bypass INT 49
Note:	by default, this vector points at an IRET instruction
SeeAlso: INT 49/AH=01h"TI",INT 50"TI Professional"
--------H-58---------------------------------
INT 58 - IRQ8 relocated by DESQview 2.26+
Range:	INT 58 to INT F8, selected automatically
Note:	this is the default, but other INTs may be used (see INT 50"DESQview")
SeeAlso: INT 50"DESQview",INT 59"DESQview",INT 70
--------H-58---------------------------------
INT 58 - IRQ0 relocated by DoubleDOS
SeeAlso: INT 08
--------b-58---------------------------------
INT 58 C - TI Professional PC - SYSTEM TIMER 25ms HOOK
Desc:	called from the hardware timer tick interrupt, after executing the
	  first four BIOS timing events, updating the system clock, invoking
	  INT 5A if required, saving registers, and switching to a temporary
	  stack (the one reserved for IRQ3)
Notes:	the handler for this interrupt may destroy AX,BX,DI,ES but must
	  preserve all other registers; 8 WORDs of stack space are available,
	  of which at most 4 may be used if the handler enables interrupts
	if the handler switches stacks (because more than 4/8 WORDs are
	  required), the original stack must be restored before chaining to
	  the previous handler
SeeAlso: INT 43"TI Professional",INT 4C"TI Professional"
SeeAlso: INT 5A"TI Professional"
--------H-59---------------------------------
INT 59 - IRQ9 relocated by DESQview 2.26+
Range:	INT 59 to INT F9, selected automatically
Note:	this is the default, but other INTs may be used (see INT 50"DESQview")
SeeAlso: INT 50"DESQview",INT 58"DESQview",INT 5A"DESQview",INT 71
--------H-59---------------------------------
INT 59 - IRQ1 relocated by DoubleDOS
SeeAlso: INT 09
--------b-59---------------------------------
INT 59 - TI Professional PC - COMMON ROM HARDWARE INTERRUPT EXIT VECTOR
Desc:	all hardware interrupts on the TI Pro jump indirectly to the handler
	  pointed at by this interrupt vector to finish their handling of
	  the hardware interrupt
Notes:	the default handler decrements the interrupt count, restores registers
	  (including the stack pointer), sends an EOI to the interrupt
	  controller, and finally does an IRET
	can be used by multitaskers which need to get control after every
	  hardware interrupt
SeeAlso: INT 40"TI Professional",INT 47"TI Professional"
SeeAlso: INT 53"TI Professional"
--------V-59---------------------------------
INT 59 - GSS Computer Graphics Interface (GSS*CGI)
	DS:DX -> block of 5 array pointers
Return: CF set on error
	    AX = error code
	CF clear if successful
	    AX = return code
Note:	INT 59 is the means by which GSS*CGI language bindings communicate with
	  GSS*CGI device drivers and the GSS*CGI device driver controller.
	also used by the IBM Graphic Development Toolkit
--------H-5A---------------------------------
INT 5A - IRQ10 relocated by DESQview 2.26+
Range:	INT 5A to INT FA, selected automatically
Note:	this is the default, but other INTs may be used (see INT 50"DESQview")
SeeAlso: INT 50"DESQview",INT 59"DESQview",INT 5B"DESQview",INT 72
--------H-5A---------------------------------
INT 5A - IRQ2 relocated by DoubleDOS
SeeAlso: INT 0A"IRQ2"
--------N-5A---------------------------------
INT 5A - PC Cluster adapter BIOS entry address
	???
Return: ???
SeeAlso: INT 5B"PC Cluster"
--------b-5A---------------------------------
INT 5A - TI Professional PC - SYSTEM TIMER 100ms HOOK
Desc:	called from the hardware timer tick interrupt, after executing the
	  first four BIOS timing events, updating the system clock, saving
	  registers, and switching to a temporary stack (the one reserved
	  for IRQ3), but before calling INT 58
	no details available
Notes:	this interrupt is invoked on every fourth timer interrupt
	the handler for this interrupt may destroy AX,BX,DI,ES but must
	  preserve all other registers; 8 WORDs of stack space are available,
	  of which at most 4 may be used if the handler enables interrupts
	if the handler switches stacks (because more than 4/8 WORDs are
	  required), the original stack must be restored before chaining to
	  the previous handler
SeeAlso: INT 43"TI Professional",INT 4C"TI Professional"
SeeAlso: INT 58"TI Professional"
--------H-5B---------------------------------
INT 5B - IRQ11 relocated by DESQview 2.26+
Range:	INT 5B to INT FB, selected automatically
Note:	this is the default, but other INTs may be used (see INT 50"DESQview")
SeeAlso: INT 50"DESQview",INT 5A"DESQview",INT 5C"DESQview",INT 73
--------H-5B---------------------------------
INT 5B - IRQ3 relocated by DoubleDOS
SeeAlso: INT 0B
--------N-5B---------------------------------
INT 5B - PC cluster adapter - RELOCATED INT 19
SeeAlso: INT 19,INT 5A"PC Cluster"
--------N-5B---------------------------------
INT 5B - AT&T Starlan Extended NetBIOS (variable length names)
	ES:BX -> Network Control Block (see #03245)
Return: AL = status (see #03248)
SeeAlso: INT 5C"NetBIOS"

Format of Starlan Network Control Block:
Offset	Size	Description	(Table 03245)
 00h	BYTE	ncb_command (see also #03250)
		70h send net Break
 01h	BYTE	ncb_retcode
 02h	BYTE	ncb_lsn
 03h	BYTE	ncb_num
 04h	DWORD	-> ncb_buffer
 08h	WORD	ncb_length
 0Ah 16 BYTEs	ncb_callname
 1Ah 16 BYTEs	ncb_name
 2Ah	BYTE	ncb_rto
 2Bh	BYTE	ncb_sto
 2Ch	DWORD	-> ncb_post	/* int (far *ncb_post)(); */
 30h	BYTE	ncb_lana_num
 31h	BYTE	ncb_cmd_cplt
 32h	DWORD	-> ncb_vname
 36h	BYTE	ncb_vnamelen
 37h  9 BYTEs	ncb_reserve
Note:	fields 00h-31h are the same as for a standard NetBIOS NCB (see #03249)
--------N-5B---------------------------------
INT 5B - Microsoft Network Transport Layer Interface
Note:	used by MS-NET for executing network commands
SeeAlso: INT 5C"NetBIOS"
--------N-5B---------------------------------
INT 5B - used by Alloy NTNX
--------N-5B---------------------------------
INT 5B - ISOLAN Multi Protocol Software
	ES:BX -> Transfer Control Block (see #03246)
Return: AL = status
Note:	this software interface allows multiple protocols/software packages
	  to access a BICC 411x network card

Format of ISOLAN Transfer Control Block:
Offset	Type	Description	(Table 03246)
 00h	BYTE	command code
		B3h Status
		F2h Activate
		F3h Deactivate
		F4h Send Data
 01h	BYTE	command identity
 02h	BYTE	virtual circuit ID
 03h	WORD	buffer length
 05h	DWORD	buffer pointer
 09h	BYTE	expedited data flag
 0Ah	BYTE	cancelable flag
 0Bh 16 BYTEs	local network address
 1Bh 16 BYTEs	remote network address
 2Bh	DWORD	asynchronous notification routine
 30h	DWORD	local network number
 34h	DWORD	remote network number
 38h	BYTE	call timeout
 39h	BYTE	not used
 3Ah  8 BYTEs	reserved
 42h	BYTE	command code extension
 43h	WORD	Blue Book MAC type