Re: Did Commodore cheat with the quad density floppies?

From: Mia Magnusson <mia_at_plea.se>
Date: Tue, 8 Jan 2019 22:34:29 +0100
Message-ID: <20190108223429.00006ba9@plea.se>
Den Tue, 8 Jan 2019 21:18:10 +0000 skrev smf <smf@null.net>:
> On 08/01/2019 20:12, Mike Stein wrote:
> > If you really wanted to and didn't mind running the motors
> > concurrently, it was a simple enough mod to one of the drives to
> > let you do what you insist is the "better way", i.e. selecting
> > drives with the DS jumpers instead of position.
> 
> If the drives had DS jumpers then you just switch them both (i.e. if 
> they were both jumpered DS1, then jumper both DS0).
> 
> The drives would then look at the other select line, which would have 
> the effect of swapping the drive letter.
> 
> I seem to remember doing that. Later on when drives were cost reduced
> to remove all the jumpers, then it's slightly more complicated.

PC uses DS1 and DS2, and if you swap them, the motor signal will still
not be swapped which makes a mess of everything.

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Received on 2019-01-08 23:03:05

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