Lenovo PC 300PL Installing Options in your PC300PL - 6562 - Page 93

Appendix B., Interrupt and DMA Resources

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Appendix B. 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 Interrupt Request 0 1 2 32 42 52 6 72 8 9 10 11 122 13 14 15 System Resource Timer Keyboard Interrupt Controller Serial Port 2 or Infrared Serial Port Audio Diskette Parallel Port Real Time Clock Available Available Available Mouse Coprocessor IDE Drives (0, 1) if installed IDE Drives (2, 3) if installed Table 4. DMA Resources DMA Request 0 1 2 32 4 5 6 7 Data Width 8 bits 8 bits 8 bits 8 bits - 16 bits 16 bits 16 bits System Resource Available Available Diskette Parallel Port Available Available Available Available 2 Can be modified to alternative settings or disabled. © Copyright IBM Corp. 1997 79

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Appendix B.
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
Interrupt Request
System Resource
0
Timer
1
Keyboard
2
Interrupt Controller
3
2
Serial Port 2 or Infrared
4
2
Serial Port
5
2
Audio
6
Diskette
7
2
Parallel Port
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
DMA Request
Data Width
System Resource
0
8 bits
Available
1
8 bits
Available
2
8 bits
Diskette
3
2
8 bits
Parallel Port
4
–
Available
5
16 bits
Available
6
16 bits
Available
7
16 bits
Available
2
Can be modified to alternative settings or disabled.
Copyright IBM Corp. 1997
79