On Mon, 3 Jun 1996, Scott Reynolds wrote:
> Unfortunately, the IWM and SWIM chips used to access the floppies are both
> proprietary and undocumented.  Apple hasn't been particularly forthcoming
> with the information, as I understand it.

FWIW, some Apple II(gs) folks know a lot about the IWM, since the IIgs
also uses the IWM, which is based on the original 5.25" floppy controller. 
I'm not one of the people who know a lot about the IWM though... all I can
do is make the disk spin and the head step :)

Does anyone know where the IWM control registers are kept, btw? I notice
there's this low memory global at 0x1e0 called IWM, but at least on my
660av, it's 0xffffffff. (does the AV not allow direct access to the SWIM
or something?)
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