CFI problems with 32bit bus and 4 devices

Stéphane Laroche stephane.laroche at
Wed Jan 10 17:39:35 EST 2001

David Woodhouse wrote:

> So - are x16 devices in x8 mode _really_ compatible with x8 devices if you
> shift the address lines over by one? Common sense would imply that's the
> case. Bitter experience would imply that the manufacturers have
> probably screwed it up in interesting ways.

The only difference between the 2 modes are the CFI addresses (you have to
multiply them by 2 in x8 mode).  So you cannot cover that in the map driver,
which doesn't know the difference between a CFI and a normal operation.


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