I'm not an expert
in the MCP O/S so have been in lurkmode on this for a
longnow while.
From what I've been able to tell, the thing
executes a superset of the old
1107 instruction set.
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Wrong side of the merger. MCP was from the Burroughs side. Descendent of
the 5500 family.
Clearpath/OS2000 are the ones-compliment 11xx family.