Interrupt Assignments; Irq Assignments For This Motherboard - Asus M3A - Motherboard - ATX User Manual

2.5.3

Interrupt assignments

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

IRQ assignments for this motherboard

PCIE x16
PCIE x1_1
PCIE x1_2
LAN (L1)
PCI slot 1
PCI slot 2
PCI slot 3
ASUS M3A
Standard function
System Timer
Keyboard Controller
Redirect to IRQ#9
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 Holder for PCI Steering*
IRQ Holder for PCI Steering*
IRQ Holder for PCI Steering*
PS/2 Compatible Mouse Port*
Numeric Data Processor
Primary IDE Channel
Secondary IDE Channel
A B C
shared – –
shared – –
– shared –
– – shared
shared – –
– shared –
– – shared
D E F
– – –
– – –
– – –
– – –
– – –
– – –
– – –
G H
– –
– –
– –
– –
– –
– –
– –
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