Lenovo PC 300PL Installing Options in your PC - 6862, 6275 - Page 99

Appendix C. Interrupt and DMA Resources

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Appendix C. Interrupt and DMA Resources This appendix lists the settings for the default interrupt and direct memory access (DMA) resources for your computer. Note: The interrupt and DMA settings might change under configuration control. Table 3. Interrupt Resources for the PC 300PL Interrupt Request System Resource 0 Timer 1 Keyboard 2 Interrupt Controller 32 Serial Port B 42 Serial Port A 52 Audio, If installed 6 Diskette 72 Available 8 Real Time Clock 9 Available 10 Available 11 Available 122 Mouse 13 Coprocessor 14 IDE Drives (0, 1) if installed 15 IDE Drives (2, 3) if installed Table 4. DMA Resources for the PC 300PL DMA Request Data Width 0 8 bits 1 8 bits 2 8 bits 32 8 bits 4 - 5 16 bits 6 16 bits 7 16 bits System Resource Audio, if installed Audio, if installed Diskette Available System Resource Available Available Available 2 Can be modified to alternative settings or disabled. © Copyright IBM Corp. 1998 85

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Appendix C.
Interrupt and DMA Resources
This appendix lists the settings for the default interrupt and direct memory access
(DMA) resources for your computer.
Note:
The interrupt and DMA settings might change under configuration control.
Table 3. Interrupt Resources for the PC 300PL
Interrupt Request
System Resource
0
Timer
1
Keyboard
2
Interrupt Controller
3
2
Serial Port B
4
2
Serial Port A
5
2
Audio, If installed
6
Diskette
7
2
Available
8
Real Time Clock
9
Available
10
Available
11
Available
12
2
Mouse
13
Coprocessor
14
IDE Drives (0, 1) if installed
15
IDE Drives (2, 3) if installed
Table 4. DMA Resources for the PC 300PL
DMA Request
Data Width
System Resource
0
8 bits
Audio, if installed
1
8 bits
Audio, if installed
2
8 bits
Diskette
3
2
8 bits
Available
4
–
System Resource
5
16 bits
Available
6
16 bits
Available
7
16 bits
Available
2
Can be modified to alternative settings or disabled.
Copyright IBM Corp. 1998
85