1.8Expansion slots

To install and configure an expansion card:

1.Install an expansion card following the instructions that came with the chassis.

2.Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for BIOS information.

3.Assign an IRQ to the card. Refer to the tables next page.

4.Install the drivers and/or software applications for the expansion card according to the card documentation.

1.8.1

Standard interrupt assignments

 

 

 

 

 

IRQ

 

Standard Function

 

0

 

System Timer

 

 

 

 

 

1

 

Keyboard Controller

 

2

 

Programmable Interrupt Controller

 

3

 

Communications Port (COM2)

 

4

 

Communications Port (COM1)

 

5

 

IRQ Holder for PCI IRQ Steering

 

6

 

Standard Floppy Disk Controller

 

7

 

ECP Printer Port (LPT1)

 

8

 

System CMOS/Real Time Clock

 

9

 

IRQ Holder for PCI IRQ Steering

 

10

 

IRQ Holder for PCI IRQ Steering

 

11

 

IRQ Holder for PCI IRQ Steering

 

12

 

PS/2 Compatible Mouse Port

 

13

 

Numeric Data Processor

 

14

 

Primary IDE controller (dual fifo)

 

15

 

Secondary Ultra ATA Controller (dual fifo)

 

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

1.8.2 IRQ assignments for this motherboard

 

 

 

A

B

C

D

 

E

F

G

H

PCI slot 1

 

—

—

—

—

—

used

—

—

 

PCI slot 2

 

—

—

—

—

—

—

used

—

 

PCI slot 3

 

—

—

—

—

—

—

—

shared

 

Onboard USB 1.1 controller 1shared —

—

—

—

—

—

—

 

Onboard USB 1.1 controller 2

—

—

—

used

—

—

—

—

 

Onboard USB 1.1 controller 3

—

—

used

—

—

—

—

—

 

Onboard USB 2.0 controller

 

—

—

—

—

—

—

—

shared

 

Onboard LAN

 

—

shared

—

—

—

—

—

—

 

Onboard Audio

 

—

shared

—

—

—

—

—

—

 

Onboard VGA

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 P4BP-MX motherboard

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