Manual

ASUS P4V8X-MX Motherboard 1-13

Standard interrupt assignments

IRQ Priority Standard Function

0 1 System Timer

1 2 Keyboard Controller

2 N/A Re-direct to IRQ#9

3 11 IRQ holder for PCI steering

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 IRQ holder for PCI steering

11 6 IRQ holder for PCI steering

12 7 PS/2 Compatible Mouse Port

13 8 Numeric Data Processor

14 9

Primary IDE Channel

15 10 Secondary IDE Channel

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.

IRQ assignments for this motherboard

A B C D E F G H

PCI slot 1 — used — — — — — —

PCI slot 2 — — used — — — — —

PCI slot 3 — — — used — — — —

Onboard USB Controller 1 — — — — — shared — —

Onboard USB Controller 2 — — — — — shared — —

Onboard USB Controller 3 — — — — — shared — —

Onboard USB Controller 4 — — — — — shared — —

Onboard AC97 Audio — — — — — — used —

Onboard LAN — — — — — — — used