1.10.2

Standard Interrupt Assignments

IRQ

Standard Function

0

System Timer

 

 

1

Keyboard Controller

2

Programmable Interrupt Controller

3*

USB Universal Host Controller

4*

Communications Port (COM1)

5*

Onboard Audio

6

Standard Floppy Disk Controller

7*

Printer Port (LPT1)

8

System CMOS/Real Time Clock

9*

Onboard LAN

10*

USB Universal Host Controller

11*

Onboard VGA

12*

PS/2 Compatible Mouse Port

13

Numeric Data Processor

14*

Ultra ATA Controller

15*

Secondary Ultra ATA Controller

*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

—

—

—

—

—

 

—

 

 

 

 

 

 

 

 

 

 

PCI slot 4

—

—

shared

—

—

—

—

 

—

PCI slot 5

—

—

—

shared

—

—

—

 

—

 

 

 

 

 

 

 

 

 

 

PCI slot 6

shared

—

—

—

—

—

—

 

—

 

 

 

 

 

 

 

 

 

 

AGP slot

shared

—

—

—

—

—

—

 

—

USB 1.1 UHCI 1

—

—

—

—

—

shared

—

 

—

 

 

 

 

 

 

 

 

 

 

USB 1.1 UHCI 2

—

—

—

—

—

shared

—

 

—

USB 1.1 UHCI 3

—

—

—

—

—

shared

—

 

—

 

 

 

 

 

 

 

 

 

 

USB 2.0 EHCI

—

—

—

—

—

shared

—

 

—

AC97 Codec

—

—

—

—

—

—

used

 

—

 

 

 

 

 

 

 

 

 

 

Onboard LAN

—

—

shared

—

—

—

—

 

—

Onboard IDE

—

—

—

—

used

—

—

 

—

 

 

 

 

 

 

 

 

 

 

1.10.3 AGP slot

This motherboard has an Accelerated Graphics Port (AGP) slot that supports +1.5V AGP cards only. When you buy an AGP card, make sure that you ask for one with +1.5V specification. Note the notches on the card golden fingers to ensure that they fit the AGP slot on your motherboard.

A7V8X-X

A7V8X-X Accelerated Graphics Port (AGP )

1-12

Chapter 1: Motherboard Information