> I am trying to figure out how to slow down the SIMH PDP-8 simulator such > that the instructions are executed with similar timing to that of a real > PDP-8. I have found that that even with throttling set very low, the > PDP-8 simulator executes much, much faster than a real PDP-8.
There are some software tools, e.g. IntervalZero, that purport to add real-time scheduling to Windows. Assuming you could get SIMH to build for one of them, you might be able to extend it a bit to release its timeslice between emulated instructions and get re-scheduled at an appropriate time. That would seem to meet most of the constraints you mentioned (keeping windows, not running the cpu at 100% all the time, etcetera), assuming you weren't talking about a tool like this when you said "cannot change to a real-time environment." De _______________________________________________ Simh mailing list [email protected] http://mailman.trailing-edge.com/mailman/listinfo/simh
