M o t h e r b o a r d F e a t u r e s & U p g r a d e s
5/6 OWNER’S HANDBOOK
Motherboard IRQs and DMA channels
Components
Interrupts (IRQs)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
System timer
Keyboard controller
PIC daisy chain
Serial port 2
BS
Serial port 1
BS
Audio
JS
Diskette controller
BS
Parallel port
BS
Real time clock
On-board video
JS
USB
BS
Mouse
BS
Co-processor
Primary E-IDE
BS
Secondary E-IDE
BS
Components
DMA channels
0
1
2
3
4
5
6
7
Audio
JS
Diskette controller
BS
Parallel port (ECP)
BS
DMAC daisy chain
Fixed assignment
Usual assignment
BIOS alternative
PnP alternative
BS = Can be disabled by BIOS Setup
JS = Can be disabled by moving a jumper