User Manual

2-18 Chapter 2: Hardware information
2.5.3 Interrupt assignments
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 – – – – –
LAN (L1E) – shared – – – – – –
PCIe Storage Controller shared – – – – – – –
PCIe x16_1 shared – – – – – – –
PCIe x1_1 shared – – – – – – –
PCIe x1_2 – shared – – – – – –
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 1 – – – shared – – – –
SATA controller 2 – – – shared – – – –
1394 controller – – – shared – – –
–
* These IRQs are usually available for PCI devices.
IRQ Priority Standard function
0 1 System Timer
1 2 Keyboard Controller
2 – Redirect 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 Reserve
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 SATA Primary IDE (legacy mode)
15 10 SATA Secondary IDE (legacy mode)
Standard interrupt assignments