Interrupt Assignments - Asus P5SD2-FM Hardware User Manual

1.5.3

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.
The communications port (COM2) is an optional item.
IRQ assignments for this motherboard
PCI slot 1
PCI slot 2
PCI slot 3
PCI Express x16 slot
Onboard USB 1.1 controller 0
Onboard USB 1.1 controller 1
Onboard USB 1.1 controller 2
Onboard USB 2.0 controller
Onboard Audio
Onboard IDE Controller
Onboard SATA Controller
Onboard LAN
Onboard IEEE 1394a controller
Onboard modem
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 P5SD2-FM
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 (LPT)*
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
— —
— —
— —
C D E
— — —
— — —
shared — —
— shared —
— — used
— — —
— — —
— — —
shared — —
— — —
— — —
— shared —
shared — —
shared — —
F G H
— — —
— — —
— — —
— — —
— — —
used — —
— used —
— — used
— — —
— — —
— — —
— — —
— — —
— — —
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