[comp.sys.amiga] reading MAC drives on the Amiga

eraps2@aspvax.UUCP (05/25/88)

It was stated that the speed changes prevented the Amiga from reading
all the data on a MAC drive.  Back in the days of the Apple ][ (I
still have one BTW), some of the nasty protection schemes used to
change the drive speed.  By playing with the motor select line (ie,
pulsing it at various rates [pulse width modulation]) the drive speed
was controllable.  I did some playing about with the Amiga drive
hardware back under 1.1 writing a flux editor and there is certainly
no reason why the drive can't be slowed up in a controllable manner.
Speeding it up is another matter, but my understanding is that the
drive needs to be slowed down to read/write the disks.


"You and I are scientists professor,    Rob Ginn 
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                      -- The Doctor     eraps1@nadc.arpa