6 Sep
2001
6 Sep
'01
12:25 a.m.
Thanks, dq. I have seen that doc, but it speaks
mainly of the
3.5 drive, which had several enhancements not available on the
5.25 drive. Was the Apple ][ controller sufficiently similar to
the IIgs and progeny that this documentation is appropriate for
it also? I've never heard the Apple ][ controller chip referred
to as 'IWM' -- is that my ignorance, or was the chip renamed, or
are they (maybe slightly) different beasts?
It's my understanding that the single-chip Integrated WOZ Machine
replaced and duplicated the function of the discrete-component-based
equivalent on the Apple II family...
FWIW, the Lisa 1 and the very first non-production Macs used a strange
5.25 inch floppy known as the Twiggy Drive... I can show you photos
of Macs that had been retrofitted for the 3.5 inch drives, but those
drives are visible through huge 5.25 inch gaping holes...
So while I can't say with certainty, I doubt the original circuit
has any capability not duplicated in the IWM chips.
Regards,
-dq