1.8.3 I nterrupt assi gnments

Standard i nterrupt assi gnments

IRQ

Standard Function

0System Timer

1Keyboard Controller

2Re-direct to IRQ#9

4Communications Port (COM1)*

5IRQ holder for PCI steering*

6Floppy Disk Controller

7Printer Port (LPT1)*

8System CMOS/Real Time Clock

9IRQ holder for PCI steering*

10IRQ holder for PCI steering*

11IRQ holder for PCI steering*

12PS/2 Compatible Mouse Port*

13Numeric Data Processor

14Primary IDE Channel

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

I RQ assi gnments for thi s motherboard

 

A

B

C

D

E

F

G

H

PCI slot 1

—

shared

—

—

—

—

—

—

PCI slot 2

—

—

—

—

— non-shared —

—

PCI Express x16 slot

shared

—

—

—

—

—

—

—

PCI Express x1 slot

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

—

—

—

—

—

—

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.

ASUS P5L-MX

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