PC-card - some light :)

From: Ruud Baltissen (g.baltissen_at_hccnet.nl)
Date: 2001-05-12 10:16:24

Hallo allemaal,

Starting all over again with the DMA-less version, I hit on something that 
could (partly) solve the problems. Having the DMA-item out of my mind, 
my unconciousness made some overtime last night as when I woke up, I 
had some answers in my mind:
- the only 16-bit-only transfer I know of is the IDE-harddisk. I wonder if 16-
bit-only is only limited to I/O
- consecutive 16-bit I/O reads don't exist (FYI: IDE-data is transfered 
using one single I/O-address)
- AFAIK _all_ memory orientated cards are capable of 8-bit operations.

If the above assumption really is true, then I could ommit 16-bit memory 
transfers and this _realy_ would simplify matters a lot. 

Please, some comment wanted. Comment like "you're right" is 
appreciated as well.


Groetjes, Ruud

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