Standard Interrupt Assignments; Irq Assignments For This Motherboard - Asus K8U-X - Socket 754 Motherboard User Manual

1.8.1 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.

1.8.2 IRQ assignments for this motherboard

PCI slot 1
PCI slot 2
PCI slot 3
PCI slot 4
Internal USB 2.0 controller
10/100 LAN
AGP slot
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.
1-14
Priority
1
2
N/A
11
12
13
14
15
3
4
5
6
7
8
9
10
INT A
shared
-
-
-
shared
-
shared
Standard Function
System Timer
Keyboard Controller
Programmable Interrupt
IRQ holder for PCI steering
Communications Port (COM1)
IRQ holder for PCI steering
Floppy Disk Controller
Printer Port (LPT1)
System CMOS/Real Time Clock
IRQ holer for PCI steering
IRQ holer for PCI steering
IRQ holer for PCI steering
PS/2 Compatible Mouse Port
Numeric Data Processor
Primary IDE Channel
Secondary IDE Channel
INT B INT C
- -
shared -
- shared
- -
shared shared
shared -
- -
Chapter 1: Product Introduction
INT D
-
-
-
used
shared
-
-