Asus P5K64 WS 2.5.3Interrupt assignments, Standard interrupt assignments, IRQ assignments for this motherboard

2.5.3Interrupt assignments

Standard interrupt assignments

IRQ	Priority	Standard Function
0	1	System Timer
1	2	Keyboard Controller
2	—	Re-direct to IRQ#9
3	9	IRQ holder for PCI steering*
4	12	Communications Port (COM1)*
5	13	IRQ holder for PCI steering*
6	14	Floppy Disk Controller
7	15	PCI device
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	10	PCI device
15	11	PCI device

* These IRQs are usually available for PCI devices.

IRQ assignments for this motherboard

	A	B	C	D	E	F	G	H
PCI 1394	—	—	—	shared	—	—	—	—
PCI slot 1	shared	—	— — — — — —
PCI slot 2	—	shared	—	—	—	— — —
LAN(8052)	—	—	—	shared	—	—	—	—
LAN(8001)	—	—	shared	—	—	—­	—	—
Marvell 6121	—	shared	— — — — — —
PCIE x16 1	shared	—	— — — — — —
PCIE x16 2	shared	—	— — — — — —
PCIE x16 3	—	shared	— — — — — —
PCIE x16 4	—	—	shared	—	—	—	—	—
USB controller 1	—	—	—	—	—	—	—	shared
USB controller 2	—	—	—	shared	—	—	—	—
USB controller 3	—	—	shared	—	—	—	—	—
USB controller 4	shared	—	— — — — — —
USB controller 5	shared	—	—	—	—	—	—	—
USB controller 6	—	—	—	—	—	shared	—	—
EHCI 1	—	—	—	—	—	—	shared	—
EHCI 2	—	shared	— — — — — —
SATA controller 1	—	—	shared	—	—	—	—	—
SATA controller 2	—	—	—	—	—	shared	—	—
Azalia	—	—	—	—	—	shared	—	—

ASUS P5K64 WS 2-17