building a PDP11 from the things you find at home - test-drb@ccmp.vtda.org

26 Jul 2001

...
  And as to the "much faster" part, for purist
reasons, I put a config flag in
 my HP 2100/21MX/7900/7948/7970 emulator that attempts to present a similar
 instruction execution speed profile as the original hardware. Of course I
 turn it off for development, but.... *G* 
Interesting point.  IIRC, the Macintosh PDP-8/e emulator has an option to run
at native speeds, however, I don't think any of the PDP-11 emulators do.  Of
course other than clock skew that I've seen, the faster the PDP-11 the better
:^)  Same thing goes for the PDP-10, the faster the better (and on at least
the simh PDP-10 emulator the clock skew problem has been solved).
                        Zane