[Simh] Can an emulated VAX survive a reboot of the host by save/restore ?

[Bucher Andreas]

Hi, 

> > what's about the save/restore commands of SIMH ? I 
> understood that it
> > can be used to store a full image if the emulators working 
> memory and
> > emulated processor state (plus simh settings and all the rest ?!).
> 
> How would you tell VMS that it had "gone away" for whatever 
> time it was
> down? The VMS running on the emulator would have no concept 
> of the time lost.

Yep, right. Where's the problem ? 
I just set the system time (or use a time sync client), and that's all.
Of course, the uptime of the VAX does not show the time it was not
running, but are there any other negative effects ?

It still gives the possibility to reboot the host and prevent the (time
consuming) reboot of the VAX, or allows to move the VAX to a diffent
host or emulator version.

Anyway, the idea of a) signalling SIMH that it should dump the state and
exit because the host is shutting down, and/or b) tell SIMH to notify
the guest OS about a requested host shutdown, wait for it to end and
then exit (Vily's idea), would be interesting, I think.

Andreas