On Sat, 28 Nov 2020, Paul Koning wrote: > > Hmm, I gather those systems are able to run some kind of BSD Unix: don't > > they support the r-commands which would allow you to run DejaGNU testing > > with a realistic environment PDP-11 hardware would be usually used with, > > possibly on actual hardware even? I always feel a bit uneasy about the > > accuracy of any simulation (having suffered from bugs in QEMU causing > > false negatives in software verification). > > Fair enough. But SIMH is a full system emulator with a very large > amount of history and expertise involved in its creation. It's also > known to run every PDP-11 OS and most diagnostics. Yes, it certainly > runs BSD 2.x; the reason I didn't use that approach is that I don't know > it well.
This all sounds great. Do you happen to know if it is cycle-accurate with respect to individual hardware microarchitectures simulated? That would be required for performance evaluation of compiler-generated code. Maciej
