Standard interrupt assignments, Irq assignments for this motherboard – Asus P2-P5945GCX User Manual

Page 29

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ASUS P1/P2-P5945GCX

* These IRQs are usually available for ISA or PCI devices.

When using PCI cards on shared slots, ensure that the drivers support “Share

IRQ” or that the cards do not need IRQ assignments. Otherwise, conflicts will

arise between the two PCI groups, making the system unstable and the card

inoperable.

Standard interrupt assignments

IRQ

Standard Function

0

System Timer

1

Keyboard Controller

2

Re-direct to IRQ#9

3

IRQ holder for PCI steering*

4

Communications Port (COM1)*

5

IRQ holder for PCI steering*

6

Floppy Disk Controller

7

Printer Port (LPT1)*

8

System CMOS/Real Time Clock

9

IRQ holder for PCI steering*

10

IRQ holder for PCI steering*

11

IRQ holder for PCI steering*

12

PS/2 Compatible Mouse Port*

13

Numeric Data Processor

14

Primary IDE Channel

15

Secondary IDE Channel

IRQ assignments for this motherboard

A

B

C

D

E

F

G

H

PCI slot 1

shared

PCI slot 2

shared

Onboard USB controller 1

shared —

Onboard USB controller 2

shared

Onboard USB controller 3

shared

Onboard USB controller 4

shared

Onboard USB 2.0 controller

shared —

Onboard IDE port

shared

Onboard HD audio

shared

Onboard LAN

shared

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