ASUS A8N-SLI 1-15
Standard interrupt assignments
IRQ Priority Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 – Re-direct to IRQ#9
4 1 2 Communications Port (COM1)*
5 1 3 IRQ holder for PCI steering*
6 1 4 Floppy Disk Controller
7 1 5 Printer Port (LPT1)*
8 3 System CMOS/Real Time Clock
9 4 IRQ holder for PCI steering*
1 0 5 IRQ holder for PCI steering*
1 1 6 IRQ holder for PCI steering*
1 2 7 PS/2 Compatible Mouse Port*
1 3 8 Numeric Data Processor
1 4 9 Primary IDE Channel
1 5 1 0 Secondary IDE Channel
* These IRQs are usually available for ISA or PCI devices.
IRQ assignments for this motherboard
AB CDEFGH
PCI slot 1 shared — — — — — — —
PCI slot 2 — shared — — — — — —
PCI slot 3 — — shared — — — — —
Onboard USB 1.0 controller shared — — — — — — —
Onboard USB 2.0 controller shared — — — — — — —
Onboard LAN1 shared — — — — — — —
Onboard LAN2 — shared — — — — — —
Onboard PCI SATA RAID (SI) — — — shared — — — —
Onboard 1394a shared — — — — — — —
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.
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