[Simh] idling documentation??

[Peter Svensson]

On Mon, 20 Dec 2010, Mark Martinec wrote:

> > i dont understand how the idle parts work, anybody have any documentation?
> > why cant we just do it like the how i did it below. aside from the
> > side effect that the system clock of guest os loooses track, it seems
> > to work ok. From what i can see from the code idle only works for VAX
> > and few others, not PDP11
> 
> It doesn't even work for VAX on reasonably fresh hw, it says:
>   sim> set cpu idle
>   Command not allowed
> when host's clock resolution as stored to sim_idle_rate_ms
> by sim_timer_init() is below 1 ms, and the simh treats it
> as an error condition  (using simh-3.8.1).

Have you tried with the vax-idle patch on sourceforge?

Works well for me.

Peter