Interrupt Assignments - Asus P7P55D-E - Premium Motherboard - ATX User Manual

2.5.3

Interrupt assignments

Standard interrupt assignments
IRQ Priority Standard function
0 1
1 2
2 –
4 12
5 13
7 14
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
PCIEx16_1
PCIEx16_2
PCIEx1_1
PCIEx1_2
PCIEx1_3
PCI_1
PCI_2
LAN_1
USB 2.0 Controller 1
USB 2.0 Controller 2
USB 3.0 Controller
SATA Controller
SATA 6G Controller (IO
Levelup disabled or set
to USB 3.0)
SATA 6G Controller (IO
Levelup set to SATA6G)
JMicron ATA Controller
1394 Controller
HD Audio
ASUS P7P55D-E
System Timer
Keyboard Controller
Redirect to IRQ#9
Communications Port (COM1)*
IRQ Holder for PCI Steering*
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
shared
shared
– –
– – –
D E F
– – –
– – –
– – –
– – –
shared – –
– – –
– – –
shared – –
– – –
– – –
– – –
shared – –
– – –
G H
– –
– –
– –
– –
– –
– –
– –
– –
– shared
– –
– –
– –
shared –
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