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ISA DMA: Difference between revisions
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AUTO. When this bit is set, after a transfer has completed the channel resets itself to the values you programmed into it.
This is great for floppy transfers. Read in a track - the values set themselves up for reading again immediately. For writing you'd only need to alter the transfer mode - not the addresses. Some expansion cards do not support auto-
IDEC. Increment/Decrement. I guess if you wanted to write big endian data to a floppy drive you could. Big
MOD0 and MOD1. This is where some problems can arise based on the peripheral the DMA controller is attached to.
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