Asus P4P800S - Manual (Page 26)

1-16 Chapter 1: Product introduction
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 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
* These IRQs are usually available for ISA or PCI devices.
1.10.2 IRQ assignments for this motherboard
A B C D E F G H
PCI slot 1 — — — — — shared — —
PCI slot 2 — — — — — — shared —
PCI slot 3 — — — — — — — shared
PCI slot 4 — — — — shared — — —
PCI slot 5/WiFi — — — — — shared — —
AGP slot used — — — — — — —
Onboard USB 1.1/2.0 controller — — — — shared shared shared shared
Onboard LAN — — — — — — shared —
Onboard Audio — — used — — — — —