CompuPro floppy controller differences - test-drb@ccmp.vtda.org

9 Sep 2006

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Subject: CompuPro floppy controller differences
   From: "Richard A. Cini" <rcini at optonline.net>
   Date: Fri, 08 Sep 2006 19:36:32 -0400
     To: "'General Discussion: On-Topic and Off-Topic Posts'"	<cctalk
at classiccmp.org>

All:

            Is there any practical difference between the CompuPro Disk 1
and Disk 1A that would prevent a 1A disk from working on a 1? I have a line
on a Disk 1 controller but only have access to 1A disks from Dave Dunfield. 
Generally none.  The 1A has an different boot rom (boots more cpus and IO
combos) and no serial (bit bang port).

The difference of the 765 vs 765A will not be a problem for C-pro disks.
If it concerns you you can put a 765A in a disk-1 with no other changes.

The rest of the differnces in the two boards are small, though of the 
two I prefer the 1A as it has a lot of small fixes on the same basic 
design.

Allison

...

            Thanks.

Rich

Rich Cini

Collector of classic computers

Lead engineer, Altair32 Emulator

Web site:  <http://highgate.comm.sfu.ca/~rcini/classiccmp/>
http://highgate.comm.sfu.ca/~rcini/classiccmp/

Web site: http://www.altair32.com/ 

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