2.5.3Interrupt assignments

Standard interrupt assignments

IRQ

Priority

Standard function

0

1

System Timer

1

2

Keyboard Controller

2

–

Redirect to IRQ#9

4

12

Communications Port (COM1)*

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

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

* 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 1394

shared

 

 

 

 

 

 

 

PCIe x16 slot 1

shared

 

 

 

 

 

 

 

PCIe x16 slot 2

 

 

 

 

 

shared

 

 

PCIe x1 slot 1

 

 

 

 

 

 

shared

 

PCIe x1 slot 2

 

 

 

 

shared

 

 

 

2.5.4PCI slots

The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that comply with PCI specifications. Refer to the figure below for the location of the slots.

We recommend that you use PCI3 slot for long PCI cards.

ASUS M2N-SLI Deluxe

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