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3 interrupt assignments, Standard interrupt assignments – Asus DSAN-DX User Manual

Page 41

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ASUS DSAN-DX

2-21

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

2.5.3

Interrupt assignments

Standard Interrupt assignments

IRQ

Priority Standard function

0

1

System Timer

1

2

Keyboard Controller

2

-

Programmable Interrupt

3*

11

Communications Port (COM2)

4*

12

Communications Port (COM1)

5*

13

--

6

14

Floppy Disk Controller

7*

15

--

8

3

System CMOS/Real Time Clock

9*

4

ACPI Mode when used

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