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INTERRUP.LST
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1994-07-14
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Interrupt List Release 41 Last change 6/5/94
This compilation is Copyright (c) 1989,1990,1991,1992,1993,1994 Ralf Brown
--------!---FILELIST-------------------------
Note: This is a truncated file used only for test purposes.
Please redistribute the following files unmodified as a group, in a trio of
archives named INTER41A through INTER41C (preferably the original authenticated
PKZIP archives):
INTERRUP.1ST the read-me file, containing credits, availability info
INTERRUP.A INT 00 through INT 13 \
INTERRUP.B INT 14 through INT 15/7F \
...
--------!---CONTACT_INFO---------------------
If you notice any mistakes or omissions, please let me know! It is only with
YOUR help that the list can continue to grow at the current rate. Please send
all changes to me rather than distributing a modified version of the list.
Please read the file INTERRUP.1ST before asking me any questions. You may find
that they have already been addressed.
Ralf Brown
Internet: ralf@telerama.lm.com
UUCP: {uunet,harvard}!telerama.lm.com!ralf
FIDO: Ralf Brown 1:129/26.1
or post a message to me in the DR_DEBUG echo (I probably won't see it
unless you address it to me)
CIS: >INTERNET:ralf@telerama.lm.com
I reply to all e-mail submissions and inquiries, but some of my replies bounce
because of bad return paths. If you don't get a response from me within a
reasonable period of time, send it again with a better return path (starting at
harvard or ucbvax for UUCP, from the Internet for others).
--------!------------------------------------
See INTERRUP.1ST for the key to system abbreviations and a list of the
trademarks mentioned here.
--------!---DISCLAIMER-----------------------
DISCLAIMER: THIS MATERIAL IS PROVIDED "AS IS". I verify the information
contained in this list to the best of my ability, but I cannot be held
responsible for any problems caused by use or misuse of the information,
especially for those functions not officially documented. If it is marked
"internal" or undocumented, you should check it carefully to make sure it
works the same way in your version of the software (and please let me know
whether or not it works the same way). Information marked with "???" is
known to be incomplete or guesswork.
--------!---FLAGS----------------------------
The use of -> instead of = signifies that the indicated register or register
pair contains a pointer to the specified item, rather than the item itself.
One or more letters may follow the interrupt number; they have the following
meanings: U - undocumented function, u - partially documented function,
P - available only in protected mode, R - available only in real or V86 mode,
C - callout or callback (usually hooked rather than called),
O - obsolete (no longer present in current versions)
--------!---CATEGORIES-----------------------
The ninth column of the divider line preceding an entry usually contains a
classification code (the entry has not been classified if that character is
a dash). The codes currently in use are:
A - applications, a - access software (screen readers, etc),
B - BIOS, b - vendor-specific BIOS extensions,
C - CPU-generated, c - caches/spoolers,
D - DOS kernel, d - disk I/O enhancements,
E - DOS extenders, e - electronic mail, F - FAX,
f - file manipulation, G - debuggers/debugging tools, g - games,
H - hardware, h - vendor-specific hardware,
I - IBM workstation/terminal emulators, i - system info/monitoring
J - Japanese, j - joke programs,
K - keyboard enhancers, k - file compression,
l - shells/command interpreters,
M - mouse/pointing device, m - memory management,
N - network, n - non-traditional input devices,
O - other operating systems,
P - printer enhancements, p - power management,
Q - DESQview/TopView and Quarterdeck programs,
R - remote control/file access, r - runtime support,
S - serial I/O, s - sound/speech,
T - DOS-based task switchers/multitaskers, t - TSR libraries
U - resident utilities, u - emulators,
V - video, v - virus/antivirus,
W - MS Windows, X - expansion bus BIOSes,
y - security, * - reserved (and not otherwise classified)
--------C-00---------------------------------
INT 00 - CPU-generated - DIVIDE ERROR
Desc: generated if the divisor of a DIV or IDIV instruction is zero or the
quotient overflows the result register; DX and AX will be unchanged.
Notes: on an 8086/8088, the return address points to the following instruction
on an 80286+, the return address points to the divide instruction
an 8086/8088 will generate this interrupt if the result of a division
is 80h (byte) or 8000h (word)
SeeAlso: INT 04
--------G-00---------------------------------
INT 00 - Zenith - ROM DEBUGGER
Desc: invokes the ROM Debugger when at the BIOS level; equivalent to
pressing Ctrl-Alt-Ins on booting.
Note: since DOS revectors INT 00, it is necessary to restore this vector to
its original ROM BIOS value in order to invoke the debugger once DOS
loads
SeeAlso: INT 03"Columbia"
--------C-01---------------------------------
INT 01 - CPU-generated - SINGLE STEP
Desc: generated after each instruction if TF (trap flag) is set; TF is
cleared on invoking the single-step interrupt handler
Notes: interrupts are prioritized such that external interrupts are invoked
after the INT 01 pushes CS:IP/FLAGS and clears TF, but before the
first instruction of the handler executes
used by debuggers for single-instruction execution tracing, such as
MS-DOS DEBUG's T command
SeeAlso: INT 03
--------C-01---------------------------------
INT 01 - CPU-generated (80386+) - DEBUGGING EXCEPTIONS
Desc: generated by the CPU on various occurrences which may be of interest
to a debugger program
Note: events which may trigger the interrupt:
Instruction address breakpoint fault - will return to execute inst
Data address breakpoint trap - will return to following instruction
General detect fault, debug registers in use
Task-switch breakpoint trap
undocumented 386/486 opcode F1h - will return to following instruc
SeeAlso: INT 03
--------H-02---------------------------------
INT 02 - external hardware - NON-MASKABLE INTERRUPT
Desc: generated by the CPU when the input to the NMI pin is asserted
Notes: return address points to start of interrupted instruction on 80286+
on the 80286+, further NMIs are disabled until the next IRET
instruction, but one additional NMI is remembered by the hardware
and will be serviced after the IRET instruction reenables NMIs
maskable interrupts may interrupt the NMI handler if interrupts are
enabled
although the Intel documentation states that this interrupt is
typically used for power-failure procedures, it has many other uses
on IBM-compatible machines:
Memory parity error: all except Jr, CONV, and some machines
without memory parity
Breakout switch on hardware debuggers
Coprocessor interrupt: all except Jr and CONV
Keyboard interrupt: Jr, CONV
I/O channel check: CONV, PS50+
Disk-controller power-on request: CONV
System suspend: CONV
Real-time clock: CONV
System watch-dog timer, time-out interrupt: PS50+
DMA timer time-out interrupt: PS50+
Low battery: HP 95LX
Module pulled: HP 95LX
--------C-03---------------------------------
INT 03 - CPU-generated - BREAKPOINT
Desc: generated by the one-byte breakpoint instruction (opcode CCh)
Notes: used by debuggers to implement breakpoints, such as MS-DOS DEBUG's G
command
also used by Turbo Pascal versions 1,2,3 when {$U+} specified
return address points to byte following the breakpoint instruction
SeeAlso: INT 01
--------G-03---------------------------------
INT 03 - Columbia PCs (desktop,VP portables) - ROM DEBUGGER
Desc: invokes the ROM Debugger if INT 03 has not been revectored; equivalent
to pressing Esc on booting.
SeeAlso: INT 00"Zenith",INT 03"Realia"
--------G-03---------------------------------
INT 03 - Realia COBOL - DEBUGGER SUPPORT
Note: Realia COBOL checks for a signature eight bytes prior to the interrupt
handler when it starts up
BUG: if the offset of the INT 03 vector is less than 8, the compiler and
all executables generated by it will crash the system
SeeAlso: INT 03"Columbia"
--------G-030910-----------------------------
INT 03 - Soft-ICE - BACK DOOR COMMANDS - DISPLAY STRING IN Soft-ICE WINDOW
AX = 0910h
SI = magic value 4647h ('FG')
DI = magic value 4A4Dh ('JM')
DS:DX -> ASCIZ string to display (max 100 bytes, 0Dh OK)
Program: Soft-ICE is a debugger by Nu-Mega Technologies, Inc.
--------G-030911-----------------------------
INT 03 - Soft-ICE - BACK DOOR COMMANDS - EXECUTE Soft-ICE COMMAND
AX = 0911h
SI = magic value 4647h ('FG')
DI = magic value 4A4Dh ('JM')
DS:DX -> ASCIZ command string (max 100 bytes, 0Dh OK)
--------G-030912-----------------------------
INT 03 - Soft-ICE - BACK DOOR COMMANDS - GET BREAKPOINT INFORMATION
AX = 0912h
SI = magic value 4647h ('FG')
DI = magic value 4A4Dh ('JM')
Return: BH = entry number of last breakpoint set
BL = type of last breakpoint set (see #0001)
DH = entry number of last breakpoint to be triggered
DL = type of last triggered breakpoint (see #0001)
Program: Soft-ICE is a debugger by Nu-Mega Technologies, Inc.
SeeAlso: AX=0913h,AX=0914h
(Table 0001)
Values for Soft-ICE breakpoint type:
00h BPM (breakpoint register types)
01h I/O
02h INTerrupt
03h BPX (INT 03h-style breakpoint)
04h reserved
05h range
--------G-030913-----------------------------
INT 03 - Soft-ICE v2.5x - BACK DOOR COMMANDS - SET Soft-ICE BREAKPOINT
AX = 0913h
SI = magic value 4647h ('FG')
DI = magic value 4A4Dh ('JM')
DS:DX -> breakpoint structure (see #0002)
Return: AX = status
00h successful
BX = breakpoint number
03h breakpoint table full
06h memory limit error
07h I/O limit error
09h range limit error
16h duplicate breakpoint
SeeAlso: AX=0912h,AX=0914h
Format of Soft-ICE breakpoint structure:
Offset Size Description (Table 0002)
00h BYTE breakpoint type (see #0003)
01h DWORD breakpoint address 1
(lower range limit for memory BPs,
interrupt number for interrupt BPs,
address of BP for execution BPs,
I/O address (only word) for I/O BPs)
05h DWORD breakpoint address 2
(upper range limit for memory BPs,
optional value to check for for interrupt BPs,
overlay number (0 = root) for execution BPs)
09h DWORD breakpoint address 3
0Dh BYTE breakpoint mode 1 (see #0004)
(for interrupt BPs = register to check
00h no value checking
01h check AL
02h check AH
03h check AX)
0Eh BYTE breakpoint mode 2 (see #0004)
0Fh BYTE breakpoint size (00h byte, 01h word, 03h dword)
10h BYTE breakpoint pass count before program stop
11h BYTE breakpoint state
Note: all unused fields should contain zeros
(Table 0003)
Values for Soft-ICE breakpoint type:
00h memory location
01h memory range
03h I/O
04h interrupt
05h execution break
(Table 0004)
Values for Soft-ICE breakpoint mode:
01h read
02h write
04h execution
--------G-030914-----------------------------
INT 03 - Soft-ICE v2.5x - BACK DOOR COMMANDS - REMOVE Soft-ICE BREAKPOINT
AX = 0914h
SI = magic value 4647h ('FG')
DI = magic value 4A4Dh ('JM')
BX = breakpoint number (returned by AX=0913h)
Return: BX = ???
Program: Soft-ICE is a debugger by Nu-Mega Technologies, Inc.
SeeAlso: AX=0912h,AX=0913h
--------C-04---------------------------------
INT 04 - CPU-generated - INTO DETECTED OVERFLOW
Desc: the INTO instruction will generate this interrupt if OF (Overflow Flag)
is set; otherwise, INTO is effectively a NOP
Note: may be used for convenient overflow testing (to prevent errors from
propagating) instead of JO or a JNO/JMP combination
SeeAlso: INT 00
--------B-05---------------------------------
INT 05 - PRINT SCREEN
Desc: dump the current text screen to the first printer
Notes: normally invoked by the INT 09 handler when PrtSc key is pressed, but
may be invoked directly by applications
byte at 0050h:0000h contains status used by default handler
00h not active
01h PrtSc in progress
FFh last PrtSc encountered error
default handler is at F000h:FF54h in IBM PC and 100%-compatible BIOSes
SeeAlso: INT 10/AH=12h/BL=20h
--------C-05---------------------------------
INT 05 - CPU-generated (80186+) - BOUND RANGE EXCEEDED
Desc: generated by BOUND instruction when the value to be tested is less than
the indicated lower bound or greater than the indicated upper bound.
Note: returning from this interrupt re-executes the failing BOUND instruction
--------P-05454A-----------------------------
INT 05 U - PSPS v2.01 - EJECT PAGE
AX = 454Ah ('EJ')
Program: PSPS is shareware PostScript PrintScreen utility by A.N.D.
Technologies
Note: sends a ^D to the current printer
SeeAlso: AX=4E57h,AX=5053h,AX=554Eh
--------P-054E57-----------------------------
INT 05 U - PSPS v2.01 - SET PARAMETERS
AX = 4E57h ('NW')
ES:SI -> 11-byte buffer containing new settings
Return: buffer filled
SeeAlso: AX=454Ah,AX=5053h,INT 17/AH=63h
--------P-055053-----------------------------
INT 05 U - PSPS v2.01 - GET PARAMETERS
AX = 5053h ('PS')
ES:SI -> 11-byte buffer for settings
Return: buffer filled
SeeAlso: AX=4E57h,AX=554Eh,INT 17/AH=64h
--------P-05554E-----------------------------
INT 05 U - PSPS v2.01 - UNINSTALL
AX = 554Eh ('UN')
Program: PSPS is shareware PostScript PrintScreen utility by A.N.D.
Technologies
SeeAlso: AX=454Ah,AX=4E57h,INT 17/AH=62h
--------!---Section--------------------------