IBM Netvista A20i User Manual page 59

The following tables list one possible assignment for the IRQs and DMA channels.
Table 3. IRQ channel assignments.
IRQ
NMI Critical system error
SMI System-management interrupt for power management
0 Timer
1 Keyboard
2 Cascade interrupt from slave PIC
3 COM2
4 USB
5 Modem
6 Diskette controller
7 LPT1
8 Real-time clock
9 ACPI
10 Audio and IEEE1394
11 Ethernet, Video and Cardbus
12 Mouse port
13 Math coprocessor
14 Primary IDE (if present)
15 Secondary IDE (if present)
System resource
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