Asus P4S800-MX SE 1.8.2 Configuring an expansion card, Standard interrupt assignments, IRQ assignments for this motherboard

1.8.2 Configuring an expansion card

After installing the expansion card, configure it by adjusting the software settings.

1.Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for information on BIOS setup.

2.Assign an IRQ to the card. Refer to the tables on the next page.3.Install the software drivers for the expansion card.

Standard interrupt assignments

IRQ	Priority	Standard Function
0	1	System Timer
1	2	Keyboard Controller
2	N/A	Programmable Interrupt
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	Advance AC’97 CODEC
11*	6	Standard PCI Graphics Adapter (VGA)
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.

IRQ assignments for this motherboard

	A	B	C	D	E	F	G	H
PCI slot 1	––	––	shared	––	––	––	––	––
PCI slot 2	––	––	––	shared	––	––	––	––
PCI slot 3	––	used	––	––	––	––	––	––
AGP slot	shared	––	––	––	––	––	––	––
Onboard USB controller 1	––	––	––	––	used	––	––	––
Onboard USB controller 2	––	––	––	––	––	used	––	––
Onboard USB controller 3	––	––	––	––	––	––	used	––
Onboard USB 2.0 controller	––	––	––	––	––	––	––	used
Onboard LAN	––	––	––	shared	––	––	––	––
Onboard Audio	––	––	shared	––	––	––	––	––
Onboard VGA	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 P4S800-MX SE motherboard 1-13