Lenovo PC 300PL Technical Information Manual for IBM PC300GL (Type 6563, 6564, - Page 60

Appendix C. IRQ and DMA channel assignments, Table 36., IRQ channel assignments, System resource

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Appendix C. IRQ and DMA channel assignments The following tables list the interrupt request (IRQ) and direct memory access (DMA channel assignments. Table 36. IRQ channel assignments IRQ System resource NMI Critical system error SMI System management interrupt - power management 0 Reserved (interval timer) 1 Reserved (keyboard) 2 Reserved, cascade interrupt from slave PIC 3 COM2 4 COM1 5 LPT2/audio (if present) 6 Diskette controller 7 LPT1 8 Real-time clock 9 ACPI 10 Available to user 11 Available to user 12 Mouse port 13 Reserved (math coprocessor) 14 Primary IDE (if present) 15 Secondary IDE (if present) © Copyright IBM Corp. 2000 53

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© Copyright IBM Corp.
2000
53
Appendix C.
IRQ and DMA channel assignments
The following tables list the interrupt request (IRQ) and direct memory access (DMA
channel assignments.
Table 36.
IRQ channel assignments
IRQ
System resource
NMI
Critical system error
SMI
System management interrupt - power management
0
Reserved (interval timer)
1
Reserved (keyboard)
2
Reserved, cascade interrupt from slave PIC
3
COM2
4
COM1
5
LPT2/audio (if present)
6
Diskette controller
7
LPT1
8
Real-time clock
9
ACPI
10
Available to user
11
Available to user
12
Mouse port
13
Reserved (math coprocessor)
14
Primary IDE (if present)
15
Secondary IDE (if present)