Asus M3A78 PRO - Interrupt Assignments; Irq Assignments for this Motherboard

ASUS M3A78 PRO 1-25
� These IRQs are usually available for ISA or PCI devices.
Interrupt assignments
A B C D E F G H
PCI 1 shared – – – – – – –
PCI 2 – shared – – – – – –
LAN – shared – – – – – –
PCIe x16_1 shared – – – – – – –
PCIe x1_1 – shared – – – – – –
PCIe x1_2 shared – – – – – – –
PCI_1 – – shared – – – – –
PCI_2 shared – – – – – – –
PCI_3
USB controller 1 – – – – – – – shared
USB controller 2 – – – shared – – – –
USB controller 3 – – shared – – – – –
USB controller 4 shared – – – – – – –
USB controller 5 shared – – – – – – –
USB controller 6 – – – – – shared – –
USB 2.0 controller 1 – – – – – – shared –
USB 2.0 controller 2 – shared – – – – –
SATA controller – – shared – – – – –
Azalia – – – – – shared – –
IRQ Priority Standard function
0 1 System timer
1 2 Keyboard controller
2
–
Re-direct to IRQ#9
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 IRQ holder for PCI steering�
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 IRQ holder for PCI steering�
15 10 IRQ holder for PCI steering�
IRQ assignments for this motherboard