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Direct Memory Access Channels
Channel
0
1
2
3
4
5
6
7
ISA Interrupts
Device
NMI
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Device
(add-in board)
(add-in board)
Diskette drive
Reserved
Reserved
(add-in board)
(add-in board)
(add-in board)
Interrupt
Parity error
Interval timer
Keyboard buffer full
Reserved, cascade interrupt from slave PIC
Onboard serial port B (COM2), if enabled
Onboard serial port A (COM1), if enabled
(EISA Ethernet when fitted)
Onboard diskette (floppy) controller, if enabled
Parallel port LPT1, if enabled
Real-time clock (RTC)
SCSI (e.g. additional 2940 when fitted)
(RAID controller cards when fitted)
(PCI Ethernet when fitted)
Onboard PS/2 mouse port, if enabled
Math coprocessor error
Reserved for SMIC
Reserved for SMIC
M o t h e r b o a r d
12/5
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