Re: Anyone have any info on the PEDISK II floppy controller?

Hi!

On Mon, Apr 22, 2013 at 7:52 AM, Ethan wrote:
<--- snip --->
> I've googled and found ads and reviews from the period, but no
> schematics or ROM dumps.  Anyone have any such thing?  Obviously it
> didn't run CBM DOS; it must have had a simple "wedge DOS" on a ROM,
> but still enjoy seeing anything about how it was made and how it
> worked.

    It was made by CGRS Microtech.  I wrote the code for the ROM as I
was the software guy for CGRS until we had a difference of opinion and
went our separate ways.  One of the principles of CGRS was Joe Swope
who lived in Penndel, Pennsylvania.  I can't find a phone number for
him.

   CGRS sold an S-100 adapter that plugs into the side of a PET.  I
have one and used it to operate a Versafloppy S-100 disk controller
connected to a pair of 8 inch single density disks.  That was the
system I used to develop KMMM EARL and KMMM Pascal.  It was still
working the last time I turned it which was years and years and years
ago.

    The PEDISK controller card is more or less a functional equivalent
of the Versafloppy disk controller card.  So much so that the DOS I
wrote for the S-100 adapter/Versafloppy controller combo ran, with
minor changes, on the PEDISK controller.

Willi

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