HP Vectra User Manual

Interrupt Controller Structure
VECTOR
VECTOR
IRQ NUMBER ADDRESS
INTERRUPT SOURCE
0 08H
000020H
Timer 0 Output
1
09H
000024H
Cascade From Controller #3
2
OAH
000028H*
Cascade From Controller #2
INT 1
3 OBH
00002CH
Serial Port 2
MASTER
4
OCH
000030H
Serial Port 1
5 ODH
000034H
Parallel Port 1
6
OEH
000038H
Flexible Disc Controller
7 OFH
00003CH
Parallel Port 2
8
70H
0001COH
Real Time Clock
9 71H
0001C4H
IRQ9 - 1/0 Channel
10
72H 0001C8H
Reserved
INT
11 73H 0001CCH
Reserved
2
12
74H
0001 DOH
Reserved
SLAVE
13
75H 0001D4H
Coprocessor (80287)
~,
14
76H
0001 D8H
Hard Disc Controller
15
77H
0001 DCH
Reserved
16
68H
0001AOH
SVC Request - 8041
17 69H
0001A4H
OBF - 8041
18 6AH 0001A8H
Reserved
INT
19
6BH 0001ACH
Reserved
3
20
6CH
0001 BOH
H PH IL Controller
SLAVE
6DH
0001 B4H Reserved
21
22 6EH
0001B8H
Reserved
23
6FH 0001 BCH
Reserved
Figure 9
*Vector from IRQ9 should be repeated here for industry standard
compatibility.
Processor Board 21

HP Vectra Specifications

General

Processor	Intel Pentium
RAM	Up to 128 MB
Storage	HDD (capacity varies by model)
Operating System	Windows 95
Graphics	Integrated
Ports	Serial, Parallel
Expansion Slots	ISA, PCI