Asus P5Q Computer Hardware 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
SATA (5723) 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
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 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 SATA Primary IDE (legacy mode)
15 10 SATA Secondary IDE (legacy mode)
* These IRQs are usually available for PCI devices.