
Appendix C. | IRQ | and |
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This | appendix | lists the | |||||||||||
assignments | for | your system unit | for the | Model | 140 | and |
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Note: | If | you | install ISA adapters in your | Model | 140 | or | Model | 240 |
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| sure that no interrupts or DMA channels conflict | with | existing | r | |||||||||
| example, | do not | set | an | ISA adapter | to use | interrupt | (IRQ) | 6 | ||||
| used | by | the diskette | drive. |
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IRQ Assignments
The following table shows the interrupt-request assignments.
IRQ | Description |
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0 | Interval | timer |
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1 | Keyboard |
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2 | Cascade from controller 2 (Not available) | |||||
3 | Serial | port | 2 |
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4 | Serial | port | 1 |
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5 | Available for ISA bus if not used for audio | |||||
6 | Diskette | drive |
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7 | Parallel port 1 or Audio | |||||
8 | clock |
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9 | Available | for | ISA | bus | ||
10 | Available | for | ISA | bus | ||
11 | Available | for | ISA | bus | ||
12 | Available | for ISA bus if not used for mouse | ||||
13 | Scatter |
| Gather |
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14 | Available | for | ISA | bus | ||
15 | Available | for | ISA | bus if not used for tablet port | ||
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Copyright IBM Corp. 1996, 1998 |