49
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
Содержание WAFER-5823
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