Masscomp MC-500 - Re: cctech Digest, Vol 13, Issue 5

Toby Thain toby at
Mon Jul 6 18:24:45 CDT 2015

On 2015-07-06 3:33 PM, Clem Cole wrote:
> ...
> One other note about the MC-500.   If was the first commercial
> Multiprocessor UNIX (predating the 386 bases symmetric boxes but a few
> years) as well as being the first real time UNIX box.  I still have working
> one in my basement.   It has 4 CPU boards in it with a 68010 and 68000 on
> each, plus a 68000 in the display processor, a number of 29000's in the FP
> and APP's units, more 29000 logic in the Data Acq Unit, as well as 80186 in
> the network processor.  All in all, a pretty neat federation of processors
> each doing their thing.
> Pretty cool for early 1980s'

Small quibble - If you mean AMD 29K wasn't released until 1988? So those 
boards must have come later than the MC-500 itself (~1984?)


> Clem

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