MacOS 9 vs. linux IDE

[Benjamin Herrenschmidt]

I've done some experiments with MacOS 9. Apparently, the IDE controller
is in a strange state after MacOS shutdown, and this is not related to
the feature control bits of the mac-io. However, I managed to revive it
after writing various values in the IDE control register (+0x160).

It looks like Apple uses bits in the MSB quartet of the IDE control
register, which are, to my knowledge, not defined by the standard.

Someone has an idea about this ? I'll continue my tests until I find
something that works all the time.


-- 
           Perso. e-mail: <mailto:bh40 at calva.net>
           Work   e-mail: <mailto:benh at mipsys.com>
BenH.      Web   : <http://calvaweb.calvacom.fr/bh40/>


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