HP A7818-IE002 - Manual (Page 60)

System Board
Assigned Device Interrupts
Chapter 2 60
Assigned Device Interrupts
I/o Controller Hub Interrupts
PCI 64-bit Hub Interrupts
Interrupt Controllers
The system has an interrupt controller that is equivalent in function to that of two
82C59 interrupt controllers. The following table shows how the interrupts are connected
to the APIC controller. The IRQs are numbered sequentially, starting with the master
controller, and followed by the slave (both of 82C59 type).
Device
Reference
Name
REQ/
GNT
ID
IDSEL
AD[xx]
Chip-set Interrupt Connection
INTA INTB INTC INTD
AC’97 audio
controller CS4280 4
(ICH2) 5 21 — A — —
USB controller — — — — A — — —
AGP slot J34 — 0 16 A B — —
PCI 32-bit slot #1 J37 1
(ICH2) 6 22 C D A B
PCI 32-bit slot #2 J38 0
(ICH2) 8 24 A B C D
PCI 32-bit slot #5
(LAN card) J42 5
(ICH2) 11 27 B C D A
Device
Reference
Name
REQ/G
NT
ID
IDSEL
AD[xx]
Interrupt Requests (IRQ)
0 1 2 3 4 5 6 7 8
Ultra-Wide SCSI U160
controller AIC-7892 2 (P64H) 9 25 — — — — — — — — A
PCI 32-bit slot #3 J39 1 (P64H) 4 20 — — — — A B C D —
PCI 32-bit slot #4 J40 0 (P64H) 7 23 A B C D — — — — —