Interrupt Assignments; Pci Express X16 - Asus K8N-LR User Manual

2.5.3

Interrupt assignments

Standard interrupt assignments
IRQ
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
* These IRQs are usually available for ISA or PCI devices.
2.5.4 PCI Express x16 slot
This motherboard supports PCI Express
x16 graphic cards that comply with
the PCI Express specifications. The
figure shows a graphics card installed
on the PCI Express x16 slot.
Due to hardware limitation, the PCI Express x16 slot runs at x8, x4, and
x1 speeds only.
2-14
Priority
1
2
–
11
12
13
14
15
3
4
5
6
7
8
9
10
Standard Function
System Timer
Keyboard Controller
Programmable interrupt
Communications Port (COM2)
Communications Port (COM1)*
IRQ holder for PCI steering*
Floppy Disk Controller
Printer Port (LPT1)*
System CMOS/Real Time Clock
IRQ holder for PCI steering*
IRQ holder for PCI steering*
IRQ holder for PCI steering*
PS/2 Compatible Mouse Port*
Numeric Data Processor
Primary IDE Channel
Secondary IDE Channel
Chapter 2: Hardware information