Interrupt Assignments - Asus P5VDC-X Installation Manual

1.8.3

Interrupt assignments

Standard interrupt assignments
IRQ Priority
0
1
2
3 11
4 12
5 13
6 14
7 15
8
9
10
11
12
13
14
15 10
* These IRQs are usually available for ISA or PCI devices.
IRQ assignments for this motherboard
PCI slot 1
PCI slot 2
PCI slot 3
PCI x4 slot*
Onboard USB controller 1
Onboard USB controller 2
Onboard USB controller 3
Onboard USB controller 4
Onboard USB 2.0 controller
Onboard LAN
Onboard audio
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 P5VDC-X
Standard Function
1 System Timer
2 Keyboard Controller
- Re-direct to IRQ#9
Communications Port (COM2)*
Communications Port (COM1)*
IRQ holder for PCI steering*
Floppy Disk Controller
Printer Port (LPT1)*
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 PS/2 Compatible Mouse Port*
8 Numeric Data Processor
9 Primary IDE Channel
Secondary IDE Channel
A B
shared —
— shared
— —
— —
shared —
— shared
— —
— —
— —
shared —
— shared
C D E
— — —
— — —
shared — —
— — —
— — —
— — —
shared — —
— shared —
shared — —
— — —
— — —
F G H
— — —
— — —
— — —
— — shared
— — —
— — —
— — —
— — —
— — —
— — —
— — —
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