Classic Mac software on PPC runs too fast!

[ChadVDR]

I’m certain this has been asked before and the solution is so simple that I seem silly for bringing it up. I’ve searched and searched but it’s very difficult to hash this precise circumstance so I haven’t found anything conclusive.

I’ll make an example of a particular application. There is a Ford Thunderbird Showcase app that was intended for the original Macintosh. If I run this on my Quadra, it handles at the 25mhz seemingly normally. If, however, I open the app in OS 9 on a 1.25Ghz G4, it runs like it’s heading for the moon! The G4 is easily 100x faster than a classic Mac, and I’d say the interface is running at about that pace.

If the Quadra in OS 8 can handle this app, running at least 3x as fast as the original Macintosh, how could I reel in the same application while using my G4?

I wouldn’t be interested in Sheep Shaver etc, just wondering if there’s a switch that can be flipped or something to tell it to slow the hell down.

 

[chelseayr]

I may be wrong but I wonder if its somehow programmed to the clock cycle assuming that was possible within the apple programming world? I know there were many dos floppy (and even some disk ones too) action games that had the silly unhelpful habit of running like they had "gone to ludicrous speed" on anything newer than a slowed down 486

 

[Daxeria]

This may be the solution you're looking for: https://macintoshgarden.org/apps/speedchopper

 

[ChadVDR]

This may be the solution you're looking for: https://macintoshgarden.org/apps/speedchopper

Works!

I'm on the 1.25ghz G4 so something around 1% speed is close to normal performance.

Let me say I really like how easy it is to use hot keys to activate and deactivate as well as to tune the speed percentage.

It is a control panel that you put into your system folder and works practically invisibly!

Very glad for the recommendation, Dax

 

[olePigeon]

I don't know the name, but there's also a nifty Control Strip Module that can add wait-states to PPC. I liked it because you could control how fast some 68k games would run by adjusting the slider.