2.7.3Configuring an expansion card

After installing the expansion card, configure it by adjusting the software settings.

1.Turn on the system and change the necessary BIOS settings, if any. See Chapter 5 for information on BIOS setup.

2.Assign an IRQ to the card. Refer to the tables on the next page.

3.Install the software drivers for the expansion card.

Standard interrupt assignments

I R Q

Standard Function

 

1

Keyboard Controller

 

2

Programmable Interrupt

 

4

Communications Port (COM1)

 

6

Floppy Disk Controller

 

7*

Printer Port (LPT1)

 

8

System CMOS/Real Time Clock

 

9*

ACPI Mode when used

 

10*

IRQ Holder for PCI Steering

 

11*

IRQ Holder for PCI Steering

 

12*

PS/2 Compatible Mouse Port

 

13

Numeric Data Processor

 

14*

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

––

––

––

––

––

––

 

PCIEX16

shared

––

––

––

––

––

––

––

 

Onboard EHCI USB controller

––

––

––

shared

––

––

––

––

 

Onboard OHCI USB controller 1

––

––

––

shared

––

––

––

––

 

Onboard OHCI USB controller 2

––

––

––

shared

––

––

––

––

 

Onboard LAN

––

shared

––

––

––

––

––

––

 

Onboard Audio

––

shared

––

––

––

––

––

––

 

Onboard 1394

––

––

––

––

shared

––

––

––

 

 

 

 

 

 

 

 

 

 

 

When using a PCI card 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 T2-PE1

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