Expansion Slots; Standard Interrupt Assignments; Irq Assignments For This Motherboard - Asus K8N8X-LA User Manual

4. Expansion slots

The motherboard has three PCI slots and one Accelerated Graphics Port (AGP) slot.
To install and configure an expansion card:
1. Install an expansion card following the instructions that came with the chassis.
2. Turn on the system and change the necessary BIOS settings, if any.
3. Assign an IRQ to the card. Refer to the tables below.
4. Install the drivers and/or software applications for the expansion card
according to the card documentation.

Standard interrupt assignments

IRQ
0
1
2
3*
4*
5*
6
7*
8
9*
10*
11*
12*
13
14*
15*
*
These IRQs are usually available for ISA or PCI devices.

IRQ assignments for this motherboard

PCI slot 1
PCI slot 2
PCI slot 3
AGP slot
Onboard 1394 controller
*Onboard USB controller 1
*Onboard LAN
*Onboard audio
*The onboard USB, LAN and audio IRQs are assigned by the BIOS.
4
Priority
1
2
N/A
11
12
13
14
15
3
4
5
6
7
8
9
10
A
INTA#
INTB#
INTC#
INTE#
INTD#
-
-
-
ASUS K8N8X-LA (Dom) Motherboard
Standard Function
System Timer
Keyboard Controller
Programmable Interrupt
Communications Port (COM2)
Communications Port (COM1)
Sound Card (sometimes LPT2)
Floppy Disk Controller
Printer Port (LPT1)
System CMOS/Real Time Clock
ACPI Mode when used
IRQ holder for PCI steering
IRQ holder for PCI steering
PS/2 Compatible Mouse Port
Numeric Data Processor
Primary IDE Channel
Secondary IDE Channel
B C
INTB# INTC#
INTC# INTD#
INTD# INTA#
INTD# -
- -
- -
- -
- -
D
INTD#
INTA#
INTB#
-
-
-
-
-