[Floppertalk] Program to slow down the CPU

Jim Leonard floppertalk@oldskool.org
Thu, 15 Nov 2001 10:29:33 -0800


jleyda wrote:
> 
> > >I'm currently researching yet another method of CPU
> > slowdown, which I hope
> >
> > Well don't keep us in suspense!
> >
> > On Nov 2, 2001 at 11:08, Jim Leonard wrote:
> >
> > >Any details on this method?  Disabling caches and the RTC is the
> > >smoothest thing I could think of, so if you've got a better idea I'd
> >
> 
> well, I did some twiddling last night with this new method and got my
> pentium II 400 to operate between 3 and 5 Mhz (or so my benchmark program
> said).
> 
> I played an old non-throttled game last with the machine and it was very,
> very playable.  I have not had the time yet to compare it against my true
> 8088 4.77MHz machine to see if games are more or less jerky, but I'll get to
> it soon.
> 
> I found that I could get the machine to be between 26 and 3MHz in variable
> steps of about 3 Mhz.  eventually, I'd like to see this turned into a tiny
> little program, perhaps even a TSR, that allows you to specifiy the speed
> you want to run at.
> 
> I've got a lot more work to do, but this was at least a promising 1st step.

Very -- if all my high-end machines weren't AMD :-(  But this is indeed
cool and 3/6/9 MHz are excellent options!  I can try this on my PIII 933
if you're willing.  I would love to try some old Atarisoft non-throttled
games and gauge how smoove it is.
-- 
http://www.MobyGames.com/
The world's most comprehensive gaming database project.

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