DMA-Channel Assignments
The following table shows the DMA-channel assignments.
DMA |
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Channel | Description |
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0 | Available for ISA bus if not used for system audio | ||||
1 | Available for ISA bus if not used for system audio | ||||
2 | Diskette | drive controller | |||
3 | Available | for | ISA | bus if not used for parallel port (ECP must be enabled) | |
4 | Cascade | (Not | Available) | ||
5 | Available | for | ISA | bus | |
6 | Available | for | ISA | bus | |
7 | Available | for | ISA | bus | |
Note:
DMA operations can be performed only between ISA or
Audio needs | up | to | 2 | channels, they can only be mapped to DMA channels 0 and 1. ECP needs |
one channel, | 0, | 1, | or | 3. |
