Asus P4S800D-X User's Guide download pdf (Page 18)

1-10

Chapter 1: Product introduction

1.8.1 Standard interrupt assignments

IRQ Priority Standard Function

0 1 System Timer

1 2 Keyboard Controller

2 N/A Programmable Interrupt

3* 11 Communications Port (COM2)

4* 12 Communications Port (COM1)

5* 13 IRQ holder for PCI steering

6 14 Floppy Disk Controller

7* 15 Printer Port (LPT1)

8 3 System CMOS/Real Time Clock

9* 4 IRQ holder for PCI steering

10* 5 Advance AC’97 CODEC

11*6 Standard PCI Graphics Adapter (VGA)

12* 7 PS/2 Compatible Mouse Port

13 8 Numeric Data Processor

14* 9 Primary IDE Channel

15* 10 Secondary IDE Channel

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

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.

1.8.2 IRQ assignments for this motherboard

ABCDEFGH

PCI slot 1 shared — — — — — — —

PCI slot 2 — shared — — — — — —

PCI slot 3 — — shared — — — — —

PCI slot 4 — — — shared — — — —

PCI slot 5 shared — — — — — — —

AGP slot shared — — — — — — —

Onboard USB 1.1/2.0 controller — — — — used used used used

Onboard LAN — — — shared — — — —

Onboard RAID — — shared — — — — —

Onboard Audio — — shared — — — — —

1.8 Expansion 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.

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