Interrupt Assignments - Asus P7H55 DVI User Manual

2.5.3

Interrupt assignments

Standard interrupt assignments
IRQ Priority Standard function
0
1
2
4 12
5 13
6 14
7 15
8
9
10
11
12
13
14
* These IRQs are usually available for PCI devices.
IRQ assignments for this motherboard
PCIEx16_1
PCIEx1_1
PCI_1
PCI_2
LAN
USB 2.0 Controller 1
USB 2.0 Controller 2
SATA Controller 1
SATA Controller 2
IDE
Onboard VGA
HD Audio
2-20
1 System Timer
2 Keyboard Controller
– Redirect to IRQ#9
Communications Port (COM1)*
IRQ Holder for PCI Steering*
Reserved
Reserved
3 System CMOS/Real Time Clock
4 IRQ Holder for PCI Steering*
5 IRQ Holder for PCI Steering*
6 IRQ Holder for PCI Steering*
7 Reserved
8 Numeric Data Processor
9 Primary IDE Channel
A B
shared –
– –
shared –
– shared
– –
– –
shared –
– –
– –
– –
shared –
– –
C D E
– – –
shared – –
– – –
– – –
– shared –
– – –
– – –
shared – –
– – –
shared – –
– – –
– – –
Chapter 2: Hardware information
F G H
– – –
– – –
– – –
– – –
– – –
– – shared
– – –
– – –
shared – –
– – –
– – –
– shared –