CP/M 1.0? (was Re: Bit of CP/M trivia needed) - test-drb@ccmp.vtda.org

29 Aug 2005

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Subject: Re: CP/M 1.0? (was Re: Bit of CP/M trivia needed)
   From: shoppa_classiccmp at trailing-edge.com (Tim Shoppa)
   Date: Sun, 28 Aug 2005 19:57:16 -0400
     To: cctalk at classiccmp.org

  Does anyone have a copy of CP/M 1.0 or know if
such a version was ever
 released?  What about 1.1, 1.2, ... ? 
1.3 is the earliest I had.  (And the original floppy is in Don Maslin's
archives should they ever be recovered.)  I think I remember Don saying
it was the earliest he'd seen.  He had lots of 2.2 of course for countless
machines but only a handful of 1.4, 2.0, etc, (and most of those came from
me too!)

The ones I gave Don were official Digital Research distribution floppies,
the oldest hand-labeled with a serial number.

I am under the impression that earlier versions were not nearly so
flexible as regards to customization to a wide variety of machines.

Tim. 
The earliest I've worked with was 1.3 and yes, before V2 it was a major task
to get it up and runnning on a new machine as the disk driver portion of the 
code was not in the "bios".  When I was at PCC'76 (in NJ) there was a 
presentation on CP/M and the discussion was around moving it to new and 
different hardware plus comments that V1.4 would be better in that the 
basic terminal (CON:, LST,, PUN:, RDR:) would be an easily modified module.

I tried to move V1.4 to a Horizon and it was not a fun task nor was it 
fully successful.  It required many hours of dissassembly and plenty of 
head scratching on how the disk was wired in.

Allison