Assigned Device Interrupts; Input/Output Controller Hub Interrupts; Pci 64-Bit Hub Interrupts; Interrupt Controllers - HP Kayak XU800 Technical Reference Manual

2 System Board

Assigned Device Interrupts

Assigned Device Interrupts

Input/Output Controller Hub Interrupts

Device
AC'97 Audio Controller
USB Controller
AGP slot
PCI 32-bit slot #1
PCI 32-bit slot #2
PCI 32-bit slot #5 (LAN card)

PCI 64-bit Hub Interrupts

Device
Ultra-wide SCSI U160 Controller
PCI 64-bit slot #3
PCI 64-bit slot #4

Interrupt Controllers

The system has an Interrupt controller which 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 Interrupt Requests
(IRQ) are numbered sequentially, starting with the master controller, and
followed by the slave (both of 82C59 type).
68
Reference REQ/
ID
Name GNT
CS4280 4 (ICH) 5
— — —
J34 — 0
J37 1 (ICH) 6
J38 0 (ICH) 8
J42 5 (ICH) 11
Reference REQ/
ID
Name GNT
AIC-7892 2 (P64H) 9
J39 1 (P64H) 4
J40 0 (P64H) 7
Chip-set Interrupt Connection
IDSEL
AD[xx]
INTA INTB
21 — A
— A —
16 A B
22 C D
24 A B
27 B C
Interrupt Requests (IRQ)
IDSEL
AD[xx]
0 1 2
25 — — —
20 — — —
23 A B C
INTC INTD
— —
— —
— —
A B
C D
D A
3 4 5 6 7
— — — — —
— A B C D
D — — — —
8
A
—
—