Re: PC-card - DMA

From: Frank Kontros (
Date: 2001-05-02 23:02:27

Hello Ruud,

Wednesday, May 02, 2001, 8:55:27 PM, you wrote:

gbhn> Some study revealed that an IDE-interface does 16-bit transfers only. AFAIK
gbhn> the IDE interface doesn't use DMA-lines. DREQ2/DACK2 are connected but, 
gbhn> AFAIK, only used by the floppy-drive. But that does not mean one cannot 
gbhn> initiate a DMA transfer from IDE to memory. Is anybody familiar with this 
gbhn> subject?

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

Best regards,

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