Re: PC-card - DMA

From: Ruud Baltissen (
Date: 2001-05-03 08:29:44

> gbhn> initiate a DMA transfer from IDE to memory. Is anybody
> gbhn> familiar with this subject?

To be more specific, I used to think that a DMA only could be initiated by
the DREQ-lines. Reading about memory-to-memory transfer I found out that
that isn't always needed. I just wondered if an I/O <-> memory DMA tranfer
could be initialised by software as well.

> Waht about today's UDMA2/4 mode HDD-s? They really removes load from main
> when turned on.

For the moment I'm already thrilled if I can attach my old 200 MB HD. Once I
have my interface, I can look how to use the features of these type of HD's.

Groetjes, Ruud

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