2.7.3Interrupt assignments

IRQ

Priority

Standard function

0

1

System timer

1

2

Keyboard controller

2

Re-direct to IRQ#9

3

11

IRQ holder for PCI steering*

4

12

Communications port (COM1)*

5

13

IRQ holder for PCI steering*

6

14

Floppy disk controller

7

15

IRQ holder for PCI steering*

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

IRQ holder for PCI steering*

15

10

IRQ holder for PCI steering*

*These IRQs are usually available for PCI devices.

IRQ assignments for this motherboard

 

A

B

C

D

E

F

G

H

PCI Slot 1

Shared

PCI Slot 2

Shared

LAN 1 (8056)

Shared

LAN 2 (8056)

Shared

SATA (Marvell)

Shared

PCIe X16_1

Shared

PCIe X16_2

Shared

PCIe X1_1

Shared

PCIX_1

Shared

USB Controller 1

Shared

USB Controller 2

Shared

USB Controller 3

Shared

USB Controller 4

Shared

USB Controller 5

Shared

USB Controller 6

Shared

USB 2.0 Controller 1

Shared

USB 2.0 Controller 2

Shared

SATA Controller 1

Shared

SATA Controller 2

Shared

Azalia ALC888

Shared

ASUS TW300-E5/PI4

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