This page is a wiki. Please login or create an account to begin editing.

8 posts / 0 new
Last post
DoomGuyII's picture
Joined: 2015 Jan 6
System 6 thru 7: Options to slow down CPU on a real Mac?

I've been thinking about tracking down one of the mid-to-later Macintosh II models and was wondering if there are any options in which I can be able to throttle down the CPU so that I can be able to play older Mac games like Lode Runner without any speed issues and such. Any suggestions?


WhosIt.There's picture
Joined: 2014 Aug 23

I haven't played it in a while, so I'd need to check, but I think Lode Runner runs fine under both Mac OS 9 and Mac OS X's "Classic" on my G3 PowerMac. Most other games that will run under the newer OS also seem to run okay (other than some not having any sound).

max1zzz's picture
Joined: 2010 Oct 3

I'm not sure if there are any options to slow down the cpu, but you could always use the 68k mac build of mini vmac, as that will let you throttle the emulated computers cpu to the correct speed

24bit's picture
Joined: 2010 Nov 19

I would like to second Max1zzz, I can't recall there was a CPU throttle for my Mac_II with a Daystar 68030.
Soc Climber and similar games were unplayable because of the game speed.
MiniVMac seems to be the only emulator adjustable to a desired speed.

dr.zeissler's picture
Joined: 2016 Sep 4

How about slowing down a real machine like a lc475.
Some older b&w games run too fast on it.
Would be nice if the lc475 can be slowed down. (beside the cache-switch, 24bit-adressing...)

soudesune's picture
Joined: 2009 Dec 19

One that comes to mind for later machines is G3 Throttle:

I did use one on an LC475 some 25 years ago but the name escapes me. I will post it when I find it.

adespoton's picture
Joined: 2015 Feb 15

I used one on the LCIII back in the day, but the name also escapes me. Eventually I just switched to running vMac on the Mac and controlling speed that way. Mini vMac is still available for 68k Macs.

Add me to the list of "if I can remember the name of the throttling control panel, I'll post it here" people.

gate's picture
Joined: 2009 Oct 17

I know this thread is old, but MacSnail seems to work well.