3.5" floppy drive question(s)
cc at informatik.uni-stuttgart.de
Thu Oct 16 03:41:25 CDT 2008
On Wed, 15 Oct 2008, Curtis H. Wilbar Jr. wrote:
> Steven Hirsch wrote:
>> That's not entirely correct. Amiga 3000 and 4000 machines had a Chinon
>> drive mechanism that could run at 1/2 speed in order to write hi-density
>> formats with an FDC chip no capable of running at high data rates.
That's what I said.
> Is the interface on those drives compatable enough with non
> Amiga equipment such that if you had one, you could it on a
> 'double density' controller and do HD ? Or did Amiga 'mangle'
Yes, it it a standard Shugart bus drive, jumpered with /RDY on pin 34 and
/DC on pin 2.
> the interface too far from standard ? Did the drive adjust speed
> on it's own (by detecting the HD hole) or did the Amiga have to
> tell it what speed to run ?
The drive does it on its own.
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