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Advanced/RH Technical Product Specification •• Page 31
Appendix F −− Interrupts & DMA Channels
IRQ System Resource
NMI I/O Channel Check
0 Reserved, Interval Timer
1 Reserved, Keyboard buffer full
2 Reserved, Cascade interrupt from slave PIC
3 Serial Port 2
4 Serial Port 1
5 Audio
6 Floppy
7 Parallel Port 1
8 Real Time Clock
9 User available
10 User available
11 Audio
12 Onboard Mouse Port
13 Reserved, Math coprocessor
14 Primary IDE
15 Secondary IDE if present, else user available
DMA Data Width System Resource
0 8- or 16-bits Audio
1 8- or 16-bits Audio
2 8- or 16-bits Floppy
3 8- or 16-bits Parallel Port (for ECP/EPP Config.)
4 Reserved - Cascade channel
5 16-bits Open
6 16-bits Open
7 16-bits Open
Table F-2. Advanced/RH DMA Map
Table F-1. Advanced/RH Interrupts