Interrupt Assignments - Asus P5Q Premium - Motherboard - ATX User Manual

2.5.3

Interrupt assignments

Standard interrupt assignments
IRQ Priority Standard function
0
1
2
4
5
6
7
8
9
10
11
12
13
14
* These IRQs are usually available for PCI devices.
2-20
1 System Timer
2 Keyboard Controller
– Redirect to IRQ#9
12 Communications Port (COM1)*
13 IRQ Holder for PCI Steering*
14 Floppy Disk Controller
15 Reserved
3 System CMOS/Real Time Clock
4 IRQ Holder for PCI Steering*
5 IRQ Holder for PCI Steering*
6 IRQ Holder for PCI Steering*
7 Reserved
8 Numeric Data Processor
9 Primary IDE Channel
Chapter 2: Hardware information