Asus A8S-X SE Computer Hardware User Manual


 
ASUS A8S-X SE
1-17
1.8.1 Standard interrupt assignments
IRQ Priority Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 N/A Programmable Interrupt
3* 11 IRQ holder for PCI steering
4* 12 Communications Port (COM1)
5* 13 IRQ holder for PCI steering
6 14 Floppy Disk Controller
7* 15 Printer Port (LPT1)
8 3 System CMOS/Real Time Clock
9* 4 IRQ holder for PCI steering
10* 5 IRQ holder for PCI steering
11* 6 IRQ holder for PCI steering
12* 7 PS/2 Compatible Mouse Port
13 8 Numeric Data Processor
14* 9 Primary IDE Channel
15* 10 Secondary IDE Channel
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.
1.8.2 IRQ assignments for this motherboard
A B C D E F G H
PCI slot 1 shared
PCI slot 2 shared
PCI slot 3 shared
PCIe x1 slot 1 shared
PCIe x1 slot 2 shared
PCIe x16 slot shared
Onboard USB controller 1 used
Onboard USB controller 2 used
Onboard USB controller 3 used
Onboard USB 2.0 controller used
Onboard LAN used
Onboard Audio shared
Serial ATA shared