Robert Hancock wrote:
Henrik Persson wrote:
Does happen once or twice a year.. Probably something funky with the
cabling or some power-related issues.
Anyway, I would be happy if the IDE driver would "just not do that". :)
I can see the reasoning where the device just doesn't function properly
with DMA at all (like on some Compact Flash-to-IDE adapters where the
card claims to support DMA but the DMA lines aren't wired through in the
adapter properly). In that case not disabling DMA would render it
useless. The IDE layer could keep track of whether DMA was previously
working on that device however, and not disable DMA on reset if it had
previously been working.
Definitely. Where these things get sticky is in defining "DMA was working".
And keeping track of it separately for reads and writes.
cheers
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