Asus A8V-VM manual Standard interrupt assignments, IRQ assignments for this motherboard

Standard interrupt assignments

IRQ	Priority	Standard Function
0	1	System Timer
1		Keyboard Controller
2	-	Programmable interrupt
3	11	Communications Port (COM2)*
4	12	-
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	MIDI port*
11	6	IRQ holder for PCI steering*
12		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.

IRQ assignments for this motherboard

	A	B	C	D	E	F	G	H
PCI slot 1	shared	—	—	—	—	—	—	—
PCI slot 2	—	shared	—	—	—	—	—	—
PCI Express x16 slot	—	—	—	—	—	—	—	shared
PCI Express x1 slot 1	—	—	—	—	—	—	—	shared
Onboard USB controller 0	shared	—	—	—	—	—	—	—
Onboard USB controller 1	—	—	shared	—	—	—	—	—
Onboard USB controller 2	—	shared	—		—	—	—	—
Onboard USB controller 3	—	—	—	shared	—	—	—	—
Onboard EHCI controller	—	—	shared	—	—	—	—	—
Onboard SATA Controller	—	shared	—	—	—	—	—	—
Onboard Audio Controller	—	shared	—	—	—	—	—	—
Onboard LAN	shared	—	—	—	—	—	—	—
Integrated graphics	shared	—	—	—	—	—	—	—

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.

ASUS A8V-VM 1-17