HP Vectra Technical Reference Manual page 19

Table 2.1
Interrupt Vector Assignments
Address Int
Function Type* Service
Routine**
0OO-OO3H
0
Divide by Zero PI sTD-BIOs (UI)
004-007H
1 Single Step PI sTD-BIOs
(UI)
008-00BH
2 Nonmaskable Interrupt PI sTD-BIOs
OOC-OOFH
3 Breakpoint
PI
STD-BIOS
(UI)
010-013H
4
Arithmetic Overflow PI sTD-BIOs (UI)
014-017H
5 Print Screen sW sTD-BIOs (DRVR)
018-01BH
6 Invalid Opcode PI sTD-BIOs (UI)
01C-01FH
7 Reserved PI STD-BIOs (UI)
020-023H
8 Timer Interrupt (IRQ 0) HW sTD-BIOs
024-027H
9 Keyboard IsR (IRQ 1) HW sTD-BIOs
028-02BH
A
Reserved (IRQ 2) HW sTD-BIOs
02C-02FH
B Serial Port 1 IsR (IRQ 3) HW sTD-BIOs
(UI)
030-033H
C Serial Port 0 ISR (IRQ 4) HW sTD-BIOs (UI)
034-037H
D Printer Port 1 IsR (IRQ 5) HW sTD-BIOs
(UI)
038-03BH
E Diskette IsR (IRQ 6) HW sTD-BIOS
03C-03FH
F Printer Port 0 IsR (IRQ 7) HW sTD-BIOD (UI)
040-043H
10 Video SW sTD-BIOs (DRVR)
044-047H
11 Equipment Check SW sTD-BIOs (DRVR)
048-04BH
12 Memory Size SW STD-BIOs (DRVR)
04C-04FH
13 Diskette/Hard Disc sW sTD-BIOs (DRVR)
050-053H
14 Serial SW STD-BIOS (DRVR)
054-057H
15 System Functions SW STD-BIOS
(DRVR)
058--0SBH
16
Keyboard SW STD-BIOs
(DRVR)
OSC-OSFH
17
Printer S\f\J
STD-BIOS (DRVR)
060-063H
18 Reserved 5'vV
N/A
,:'jQEn
-
-- --
064-067H
19 Boot SW sTD-BIOs (DRVR)
068-06BH
1A Time and Date SW sTD-BIOS (DRVR)
06C-06FH
1B
Keyboard Break
SW sTD-BIOs
(I RET)
070-073H
1C Timer Tick
~v\1
STD-BIOs (lREn
074-077H
1D Video Parameter Table
PT
STD-BIOS
• I
078-07BH
1E Diskette Parameter Table PT
STD-BIOS
07C-07FH
1F Graphics Character Table PT STD-BIOs
080-083H
20 Program Terminate SW DOS
084-087H
21
DOS Function Calls
sW DOS
088-08BH
22 DOS Terminate Address PT DOS
10 ROM BIOS Overview