[Simh] Throttling the vax

[Norman Lastovica]

I would have to argue that the VAX side code
ought to be either BLISS or MACRO.  Both are
free.  I'd be happy to help out in the coding
if needed.

> -----Original Message-----
> From: simh-bounces at trailing-edge.com
> [mailto:simh-bounces at trailing-edge.com]On Behalf Of Hittner, David T.
> Sent: Monday, April 24, 2006 7:57 AM
> To: Villy.Madsen at shaw.ca
> Cc: simh mailing list
> Subject: Re: [Simh] Throttling the vax
> 
> 
> I suspect most people who run a SIMH VAX will be interested in the code.
> I know I would be happy to stop my laptop from howling when the VAX
> starts up and the laptop kicks up the fan.
> 
> Please check the big/little-ended-ness of your code if you'd like to see
> it get back into the codebase.
> 
> You might look at redoing the VAX code side in C instead of in FORTRAN.
> Since you admit that the code may not be the most robust, it would
> facilitate later programmers to be able to work with C, which they are
> already mostly familiar with if they do any work with SIMH, C++, or
> Java. UnFORTunately, FORTRAN is a dying art. ;-)
> 
> Dave
> 
> > -----Original Message-----
> > From: simh-bounces at trailing-edge.com 
> > [mailto:simh-bounces at trailing-edge.com] On Behalf Of Villy Madsen
> > Sent: Sunday, April 23, 2006 12:55 PM
> > To: 'simh mailing list'
> > Subject: [Simh] Throttling the vax
> > 
> > Greetings All
> > 
> > well I have some code that does the job.
> > 
> > I am not guaranteeing that it looks nice - but it does work..
> > 
> > It'll throttle up within a second or two of the load coming 
> > on, and then gradually throttle down over the next 10 to 15 seconds.
> > 
> > It uses a DN device driver to control a routine in VAX_CPU, a 
> > Sleep routine in SCP.C (because I kept getting an error when 
> > I tried to include window.h in VAX_CPU, and a fortran routine 
> > that runs as a batch job on the vax - talking to the DN CSR 
> > to pass info to the simulator.
> > 
> > The batch routine wakes up once a second to check the CPU 
> > itilization..
> > 
> > I don't know how low this thing goes - because I don't trust 
> > the meter on my W/98 box..
> > 
> > Villy
> > 
> > 
> > Any one interested.
> > 
> > 
> > 
> > 
> > Villy Madsen
> > www.members.shaw.ca/villy.madsen
> > 
> > 
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