[Simh] Is it possible to simulate the first Vaxen I ever used?

Robert Armstrong bob at jfcl.com
Mon Mar 23 10:03:33 EDT 2020


> Paul Koning <paulkoning at comcast.net> wrote:
>... extended microcode to run PDP-8 code faster.  But it was an 11/60
running RSTS/E.

  So it is true (well, sort of, but with a PDP-11/60 rather than a
VAX-11/730)??  Do you know any details of how it was implemented?  If it ran
RSTS then it was obviously still a PDP-11 at the same time it was emulating
a PDP-8.  Was there a -8 "compatibility" mode, something like the -11 mode
on the VAX?  

Bob



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