Asus P4PE User's Guide download pdf (Page 24)

1-14

Chapter 1: Product introduction

1.10 Expansion slots

The motherboard has six PCI slots and one Accelerated Graphics Port (AGP) slot.

To install and configure an expansion card:

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

NOTE: The AGP slot supports only 1.5V AGP cards.

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 below.

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

according to the card documentation.

1.10.1 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.

1.10.2 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 ——

PCI slot 6 ——shared —————

AGP slot shared ———————

Onboard USB controller HC0 shared ———————

Onboard USB controller HC1 —— —used ————

Onboard USB controller HC2 ——shared —————

Onboard USB 2.0 controller ———————shared

Onboard LAN (optional) —— — —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 arise between

the two PCI groups making the system unstable and the card inoperable.

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