Re: Commodore "Most Wanted" List

From: Ethan Dicks <>
Date: Wed, 2 May 2012 11:11:03 -0400
Message-ID: <>
On Wed, May 2, 2012 at 4:55 AM, didier derny <> wrote:
> Le 02/05/2012 07:50, Baltissen a écrit :
>> - ROM from a 1591 disk drive - the high density 1581 - heard prototype
>> was thrown away :(
>> To be honest, I haven't an idea what hardware is needed to run a 1.44 MB
>> drive at all...
> it may be a problem of speed, on a standard floppy 3 1/2 floppy as far as I
> can remember, we have 13 or 14 microseconds
> to transfer the data. with a HD it's probably faster and probably why a dma
> is needed.

Would Commodore have used same the half-rotation-speed high-density
drive that they used in the Amiga, the Chinon FZ-357A?  You'd still
need a larger buffer to hold the longer track, but the data rate would
be identical.  They already had the drive on hand; no additional
engineering required.


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Received on 2012-05-02 16:00:05

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