Asus P5MT-C - Manual (Page 36)

2-16 Chapter 2: Hardware information
2.5.3 Interrupt assignments
IRQ Priority Standard Function
0 1 System Timer
1 2 Keyboard Controller
2 — Re-direct to IRQ#9
3 11 Communications Port (COM2)*
4 12 Communications Port (COM1)*
5 13 IRQ holder for PCI steering*
6 14 Floppy Disk Controller
7 15 Printer Port (LPT1)*
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 Primary IDE Channel
15 10 Secondary IDE Channel
* These IRQs are usually available for ISA or PCI devices.
Standard interrupt assignments
A B C D E F G H
PCIE x 8 slot 1 shared — — — — — — —
PCIE x 8 slot 2 shared — — — — — — —
Onboard USB controller 0 shared — — — — — — —
Onboard USB controller 1 — shared — — — — — —
Onboard USB controller 2 — — shared — — — — —
Onboard USB controller 3 — — — shared — — — —
Onboard EHCI Controller shared — — — — — — —
Onboard IDE port — — shared — — — — —
Onboard SATA port — — — shared — — — —
Onboard Graphics Controller — — — shared — — — —
Onboard LAN Contorller1 shared — — — — — — —
Onboard LAN Contorller2 — shared — — — — — —
PCI slot 1 — — — — shared shared shared shared
PCI slot 2 — — — — shared shared shared shared
PCI slot 3 — — — — shared shared shared shared
PCI slot 4 — — — — shared shared shared shared
PCI slot 5 — — — — shared shared shared shared
IRQ assignments for this motherboard