2.5.3Interrupt assignments

Standard interrupt assignments

IRQ

Priority

Standard Function

0

1

System Timer

1

2

Keyboard Controller

2

Re-direct to IRQ#9

3

9

IRQ holder for PCI steering*

4

12

Communications Port (COM1)*

5

13

IRQ holder for PCI steering*

6

14

Floppy Disk Controller

7

15

PCI device

8

3

System CMOS/Real Time Clock

9

4

IRQ holder for PCI steering*

10

5

IRQ holder for PCI steering*

11

6

IRQ holder for PCI steering*

12

7

PS/2 Compatible Mouse Port*

13

8

Numeric Data Processor

14

10

PCI device

15

11

PCI device

* These IRQs are usually available for PCI devices.

IRQ assignments for this motherboard

 

A

B

C

D

E

F

G

H

 

 

 

 

 

 

 

 

 

PCI 1394

shared

PCI slot 1

shared

— — — — — —

PCI slot 2

shared

— — —

LAN(8052)

shared

LAN(8001)

shared

—­

Marvell 6121

shared

— — — — — —

PCIE x16 1

shared

— — — — — —

PCIE x16 2

shared

— — — — — —

PCIE x16 3

shared

— — — — — —

PCIE x16 4

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

EHCI 1

shared

EHCI 2

shared

— — — — — —

SATA controller 1

shared

SATA controller 2

shared

Azalia

shared

 

 

 

 

 

 

 

 

 

ASUS P5K64 WS

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