2.5.3Interrupt assignments

IRQ

Priority Standard function

01 System timer

12 Keyboard controller

2– Re-direct to IRQ#9

311 IRQ holder for PCI steering*

412 Communications port (COM1)*

513 IRQ holder for PCI steering*

614 Floppy disk controller

715 IRQ holder for PCI steering*

83 System CMOS/Real Time Clock

94 IRQ holder for PCI steering*

105 IRQ holder for PCI steering*

116 IRQ holder for PCI steering*

127 IRQ holder for PCI steering*

138 Numeric data processor

149 Primary IDE channel

1510 Secondary IDE channel

*These IRQs are usually available for PCI devices.

IRQ assignments for this motherboard

 

A

B

C

D

E

F

G

H

PCI slot 1

shared

–

–

–

–

–

–

–

PCI slot 2

–

shared

–

–

–

–

–

–

PCI slot 3

–

–

shared

–

–

–

–

–

LAN (L1)

–

shared

–

–

–

–

–

–

SATA (363)

shared

–

–

–

–

–

–

–

PCIE x16_1

shared

–

–

–

–

–

–

–

PCIE x16_2

shared

–

–

–

–

–

–

–

USB controller 1

–

–

–

shared

–

–

–

–

USB controller 2

–

–

shared

–

–

–

–

–

USB controller 3

shared

–

–

–

–

–

–

–

USB controller 4

shared

–

–

–

–

–

–

–

USB controller 5

–

–

–

–

–

shared

–

–

USB controller 6

–

–

shared

–

–

–

–

–

USB 2.0 controller 1

–

–

–

–

–

–

–

shared

USB 2.0 controller 2

–

–

shared

–

–

–

–

–

SATA controller 1

–

–

shared

–

–

–

–

–

SATA controller 2

–

–

–

–

–

–

shared

–

Azalia

–

–

–

–

–

–

shared

–

2-20

Chapter 2: Hardware information