Standard Interrupt Assignments; Irq Assignments For This Motherboard - Asus Motherboard P4PE BP User Manual

1.10.1 Standard interrupt assignments

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

1.10.2 IRQ assignments for this motherboard

PCI slot 1
PCI slot 2
PCI slot 3
PCI slot 4
PCI slot 5
PCI slot 6
AGP slot
Onboard USB controller HC0 shared
Onboard USB controller HC1
Onboard USB controller HC2
Onboard USB 2.0 controller
Onboard LAN (optional)
Onboard audio (optional)
When using PCI cards on shared slots, ensure that the drivers support "Share
IRQ" or that the cards do not need IRQ assignments. Otherwise, conflicts will
arise between the two PCI groups, making the system unstable and the card
inoperable.
ASUS P4PE BP motherboard user guide
Priority
1
2
N/A
11
12
13
14
15
3
4
5
6
7
8
9
10
A B
— —
— —
— —
— —
— —
— —
shared —
—
— —
— —
— —
— —
— —
Standard Function
System Timer
Keyboard Controller
Programmable Interrupt
Communications Port (COM2)
Communications Port (COM1)
IRQ holder for PCI steering
Floppy Disk Controller
Printer Port (LPT1)
System CMOS/Real Time Clock
IRQ holder for PCI steering
Advance AC'97 CODEC
Standard PCI Graphics Adapter (VGA)
PS/2 Compatible Mouse Port
Numeric Data Processor
Primary IDE Channel
Secondary IDE Channel
C D E
— — —
— — —
— — —
— — shared
— — —
shared — —
— — —
— — —
— used —
shared — —
— — —
— — shared
— — shared
F G H
shared — —
— shared —
— — shared
— — —
shared — —
— — —
— — —
— — —
— — —
— — —
— — shared
— — —
— — —
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