Standard i nterrupt assi gnments

IRQ

Priority

Standard Function

 

0

1

System Timer

 

1

2

Keyboard Controller

 

2

-

Programmable interrupt

 

3

11

Communications Port (COM2)*

 

4

12

-

 

5

13

IRQ holder for PCI steering*

 

6

14

Floppy Disk Controller

 

7

15

Printer Port (LPT1)*

 

8

3

System CMOS/Real Time Clock

 

9

4

IRQ holder for PCI steering*

 

10

5

MIDI port*

 

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 I RQs 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

—

shared

—

—

—

—

—

—

PCI Express x16 slot

—

—�

—�

—�

—�

—�

—�

shared������

PCI Express x1 slot 1

—

—�

—�

—�

—�

—�

—�

shared������

Onboard USB controller 0

shared

—

—

—

—

—

—

—

Onboard USB controller 1

—

shared

—

—

—

—

—

—

Onboard USB controller 2

—

—

shared

 

—

—

—

—

Onboard USB controller 3

—

—

—

shared

—

—

—

—

Onboard EHCI controller

—

—

shared

—

—

—

—

—

Onboard SATA Controller

—

shared

—

—

—

—

—

—

Onboard Audio Controller

—

shared

—

—

—

—

—

—

Onboard LAN

shared

—

—

—

—

—

—

—

Integrated graphics

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 A8V-VM SE

1-17