Asus BP5120 - Manual (Page 34)

2-12 Chapter 2: Basic installation
2.5.3 Standard interrupt assignments
When using a PCI card 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.
Standard interrupt assignments
* These IRQs are usually available for ISA or PCI devices.
IRQ Priority Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 — Redirect to IRQ#9
3 10 Communications Port (COM1)
4 11 IRQ holder for PCI steering*
5 12 Standard Floppy Disk Controller
6 13 Printer Port (LPT1)*
7 3 System CMOS/Real Time Clock
8 4 IRQ holder for PCI steering*
9 5 IRQ holder for PCI steering*
10 6 IRQ holder for PCI steering*
11 7 PS/2 Compatible Mouse Port*
12 8 Numeric Data Processor
13 9 Primary IDE Channel
IRQ assignments for this motherboard
A B C D E F G H
PCI1 — — — shared — — — —
PCI2 shared — — — — — — —
PCIEX16_1 shared — — — — — — —
PCIEX1_1 shared — — — — — — —
Onboard USB controller 1 — — — — — — — shared
Onboard USB controller 2 — — — shared — — — —
Onboard USB controller 3 — — shared — — — — —
Onboard USB controller 4 shared — — — — — — —
Onboard USB 2.0 controller — — — — — — — shared
Onboard HD audio shared — — — — — — —
Onboard LAN — shared — — — — — —