Interrupt Assignments - Asus MAXIMUS III EXTREME User Manual

2.5.3

Interrupt assignments

Standard interrupt assignments
IRQ Priority
0
1
2
4
5
6
7
8
9
10
11
12
13
14
* These IRQs are usually available for PCI devices.
IRQ assignments for this motherboard
PCIEX16_1
PCIEX16_2
PCIEX16_3
PCIEX16_4
PCIEX16_5
PCI_1
LAN1
USB 2.0 controller1
USB 2.0 controller2
USB 3.0 controller
Onboard SATA controller
Onboard SATA 6G controller shared
1394 Controller
HD Audio
2-24
Standard function
1 System Timer
2 Keyboard Controller
– Redirect to IRQ#9
12 Communications Port (COM1)*
13 IRQ Holder for PCI Steering*
14 Reserved
15 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
shared
–
shared
–
–
–
–
–
shared
–
–
–
B C D
– – –
shared –
– – –
– shared
– shared –
– – –
– – shared
– – –
– – –
– – –
– shared –
– – –
– – –
– – –
E F G
– – –
– – –
– – –
– – –
– – –
shared –
– – –
– – –
– – –
– – shared
– – –
– – –
– – –
– – shared
Chapter 2: Hardware information
H
–
–
–
–
–
–
–
shared
–
–
–
–
shared
–