Forgive us our CPU. We know not what we do.
It wasn't clear to me in your original post that you were
referring to the Apple II diskette drive, but I understand
now. And yeah - the IWM (Incredible Woz Machine) diskette
controller WAS fairly sensitive. I never owned an Apple II,
but heard about them.
Craig-
Macs up through at least the MacPlus have a single-chip
implemntation of the IWM that they used for both the
never-shipped Twiggy drives (never shipped in Macs) and
the later 400k/800k 3.5" floppies.
Just FYI...
Regards,
-dq