Asus P4V8X-MX - Manual (Page 22)

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