2.5.3Interrupt assignments

IRQ

Priority

Standard function

0

1

System Timer

1

2

Keyboard Controller

2

–

Redirect to IRQ#9

3

11

IRQ Holder for PCI Steering*

4

12

Communications Port (COM1)*

5

13

IRQ Holder for PCI Steering*

6

14

Floppy Disk Controller

7

15

Printer Port (LPT1)*

8

6

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

9

Primary IDE Channel

15

10

Secondary IDE Channel

*These IRQs are usually available for ISA or 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

Onboard IDE (JMicron®)

–

shared

–

–

–

–

–

–

Onboard 1394

–

–

–

–

–

shared

–

–

Onboard LAN1

–

–

–

shared

–

–

–

–

Onboard LAN2

shared

–

–

–

–

–

–

–

PCIE x16 1

shared

–

–

–

–

–

–

–

PCIE x16 2

shared

–

–

–

–

–

–

–

PCIE x1

shared

–

–

–

–

–

–

–

PCIE x1

–

–

shared

–

–

–

–

–

USB controller 1

–

–

–

–

shared

–

–

–

USB controller 2

–

shared

–

–

–

–

–

–

USB controller 3

–

–

shared

–

–

–

–

–

USB controller 4

–

–

–

shared

–

–

–

–

USB 2.0 controller

–

–

–

–

shared

–

–

–

Serial ATA

–

–

–

–

–

–

–

shared

IDE

–

–

–

–

–

–

shared

–

HD Audio

–

–

–

shared

–

–

–

–

ASUS P5W DH Deluxe

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