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On Sat, 05 Apr 2014 23:04:42 +0200
Jean-Louis Oneto <> wrote:

DRI CP/M80 then CP/M86 were nothing but vaporware, 

I think you must have CP/M and CP/M-86 conflated with something
else.  CP/M-80 was anything *but* "vapourware."  In the mid-70's to
early 80's, 8080- and Z-80 systems ran on nothing *but* CP/M.  Oh,
there were a few other also-rans, but they didn't amount to much.
Micropolis, for example, had its own OS (MDOS), for example.  I ran
both CP/M-80 1.4, CP/M 2.2 and CP/M Plus (aka: CP/M 3) operating
systems, and, in fact, wrote quite a good deal of code for CP/M-80
systems, including contributing to the original XMODEM and MINICBBS

I ran one of the first, if not *the* first, 24x7 RCP/M systems in the
state of Michigan.

Nor was CP/M-86 vapourware.  It was short-lived, because Kildall was
way too late to the game, but it did exist.  IIRC, the DEC Rainbow
dual-booted CP/M-86 and DOS?

only the MP/M86
(multitasking variant of CP/M86) never had a real existence.

I think I ever only saw a single MP/M system in the wild.

Microsoft bought DRI, 

Microsoft never bought Digital Research International.  (Looking...)
It was acquired by Novell in 1981.

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