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B.2 DMA channel assignments
Channel
Function
0
Available
1
Available
2
Standard floppy disk controller
3
Parallel port*
4
Cascade for DMA controller 1
5
Available
6
Available
7
Available
* parallel port DMA default setting: DMA 3
parallel port DMA select: DMA 1 or 3
B.3 Interrupt assignments
Interrupt #
Interrupt source
NMI
Parity error detected
IRQ 0
System timer
IRQ 1
Keyboard
IRQ 2
Interrupt from controller 2 (cascade)
IRQ 3
Serial communication port 2
IRQ 4
Serial communication port 1
IRQ 5
Available
IRQ 6
Standard floppy disk controller
IRQ 7
Parallel port (print port)
IRQ 8
Real-time clock
IRQ 9
Available
IRQ 10
Available
IRQ 11
Available
IRQ 12
PS/2 mouse
IRQ 13
Numeric data processor
IRQ 14
Fixed primary IDE controller
IRQ 15
Fixed secondary IDE controller
Ethernet IRQ is automatic set by the system
Summary of Contents for WAFER-5823
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