Asus BA5120 - Manual (Page 25)

2-11 ASUS BA5120/AS-D672
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.
Standard interrupt assignments
IRQ assignments for this motherboard
A B C D E F G H
PCI1 shared – – shared – – – –
PCI2 – shared – – – – – –
PCI3 – – shared – – – – –
PCIEX16_1 shared – – – – – – –
PCIEX1_1 shared – – – – – – –
PCIEX1_2 – shared – – – – – –
USB controller 1 – – – – – – – shared
USB controller 2 – – – shared – – – –
USB controller 3 – – shared – – – – –
USB controller 4 shared – – – – – – –
USB 2.0 controller – – – – – – – shared
HD audio shared – – – – – – –
LAN – – shared – – – – –
IRQ Priority Standard function
0 1 System timer
1 2 Keyboard controller
2 – –
3 11 IRQ holder for PCI steering*
4 12 Communications port (COM1)
5 13 Standard IRQ holder for PCI steering
6 14 Floppy Disk Controller
7 15 Printer Port (LPT1)
8 3 System CMOS/Real Time Clock
9 4 Microsoft ACPI-Compliant System
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
* These IRQs are usually available for PCI devices.