Asus P8C WS IRQ assignments for this motherboard, IRQ, Priority, Standard function, Standard Interrupt assignments

Standard Interrupt assignments

	IRQ	Priority	Standard function
	0	1	System Timer
	1	2	Keyboard Controller
	2	-	Programmable Interrupt
	4	12	Communications Port (COM1)
	5	13	IRQ Holder for PCI Steering
	6	14	Reserved
	7	15	Reserved
	8	3	System CMOS/Real Time Clock
	9	4	IRQ Holder for PCI Steering
Chapter	10	5	IRQ Holder for PCI Steering
	11	6	IRQ Holder for PCI Steering
	12	7	Reserved
	13	8	Numeric Data Processor
2	14	9	Primary IDE Channel
	IRQ assignments for this motherboard
			A	B	C	D	E	F	G	H
	PCIEx16_1		shared	–	–	–	–	–	–	–
	PCIEx16_2			shared	–	–	–	–	–	–
	PCIEx16_3		–	–	–	shared	–	–	–	–
	PCIEx16_4		shared	–	–	–	–	–	–	–
	PCIEx1_1		shared	–	–	–	–	–	–	–
	PCI1		shared	–	–	–	–	–	–	–
	VIA1394		–	–	–	shared	–	–	–	–
	USB3.0		shared	–	–	–	–	–	–	–
	LAN1 (82574)		–	shared	–	–	–	–	–	–
	LAN2 (82574)		–	–	shared	–	–	–	–	–
	SATA Controller 1		–	–	–	shared	–	–	–	–
	SATA Controller 2		–	–	–	shared	–	–	–	–
	USB 2.0 Controller 1		–	–	–	–	–	–	–	shared
	USB 2.0 Controller 2		shared	–	–	–	–	–	–	–
	HD Audio		–	–	–	–	–	–	shared	–

2-8 Chapter 2: Hardware information