On Friday, September 7, 2018 at 10:12 AM, Paul Koning wrote: > > On Sep 7, 2018, at 12:37 PM, Mark Pizzolato <m...@infocomm.com> wrote: > > > > On Friday, September 7, 2018 at 1:18 AM, Lars Brinkhoff wrote: > >> Timothe Litt wrote: > >>> Adding an API in the CPU of the form assert_powerfail( vector) - where > >>> the default is the usual 24/26, but a ROM can specify an alternate > >>> (usually its base address + 24/26). This is common to all initiators. > >> > >> This touches on something else I have been thinking about. > >> > >> Would it be appropriate to have a SIGTERM (and/or similar signals) trigger > >> a > >> power fail in the PDP-11 and other simulators with corresponding > >> mechanisms? SIGINT goes into the SCP console, and of course SIGKILL > instantly > >> switches off the simulated machine. > >> ... > > > > Alternatively, I've got a simulator that's been running via a script in a > > background process for 10+ years. The script it is running under receives > > one of these signals and that immediately drops out of sim_instr() and the > > script is configured to SAVE the simulator state to a file. > > That's a fairly simple scripting exercise wrapped around SIMH. You can catch > the signal, send control/E to get the sim> prompt, then suitable examine and > deposit commands to simulate a trap to 24.
SIGTERM and SIGINT already are caught in simh and when delivered they cause exit from simulator instruction execution and return to sim> prompt. No need for an extra wrapper or for sending control/E. - Mark _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
