Interrupt Assignments; Irq Assignments For This Motherboard - Asus P7P55D PRO User Manual

2.5.3

Interrupt assignments

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

IRQ assignments for this motherboard

PCIE x16_1
PCIE x16_2
PCIE x16_3
PCIE x1_1
PCIE x1_2
LAN
JMicron ATA Controller
SATA controller 1
SATA controller 2
USB 2.0 controller 1
USB 2.0 controller 2
1394 controller
HD Audio
PCI_1
PCI_2
ASUS P7P55D PRO
Standard function
System Timer
Keyboard Controller
Redirect to IRQ#9
Communications Port (COM1)*
IRQ Holder for PCI Steering*
Reserved
Reserved
System CMOS/Real Time Clock
IRQ Holder for PCI Steering*
IRQ Holder for PCI Steering*
IRQ Holder for PCI Steering*
Reserved
Numeric Data Processor
Primary IDE Channel
A B C
shared – –
shared – –
shared – –
shared – –
– shared –
– – –
– – shared
– – –
– – –
– – –
shared – –
– – shared
– – –
shared
– shared –
D E F
– – –
– – –
– – –
– – –
– – –
shared – –
– – –
– – shared
– – shared
– – –
– – –
– – –
– – –
– – –
G H
– –
– –
– –
– –
– –
– –
– –
– –
– –
– shared
– –
– –
shared –
– –
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