[Info-vax] VMS port to x86

[Jerry Eckert]

On Mar 25, 3:48 am, John Wallace <johnwalla... at yahoo.co.uk> wrote:
> On Mar 25, 6:40 am, JF Mezei <jfmezei.spam... at vaxination.ca> wrote:
>
> > je... at virtual-vax-alpha.com wrote:
> > > systems with much less power consumption and heat generation. VAX/
> > > Alpha virtualization won't be the right fit for everyone, of course,
>
> > SimH causes one core of an x86 to run at 100% all the time to emulate
> > the vax.  A Mac Pro computer running at 100% consumes about as much
> > power as a DS10L.
>
> > If SimH could "capture" the idle loop and sleep the process instead,
> > then power consumption might be down, but not that much.
>
> "If SimH could "capture" the idle loop"
>
> JF, have you tried the SIMH "SET CPU IDLE=VMS" command (as written up
> in various places on the Internet) and found it wanting, or were you
> just unaware of it?
>
vtAlpha
> In a commercial setup rather than hobbyist setup, a far greater
> concern than using one of the multiple cores [often unnecessarily]
> provided in many modern Window boxes would likely be the reliability
> and availability of the underlying OS in comparison with the
> reliability and availability which led to the choice (and retention)
> of VMS.