News: PC Engine overclocking

January 25, 2007, 04:43 PM

by brandon, via Underground Console Mods -
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Rob at 'underground console mods' has found a way to overclock the PC Engine main CPU so that certain games with slowdown have a better framerate. He uses a 25 MHz crystal oscillator - I don't know what that is, but it sure sounds neat. And in fact, it sounds a bit similar to the Lynx overclocking mod I linked to about three years ago, but absolutely cannot be bothered to find. Anyway, he's talking about a rather mild overclock, to boost the framerate just a bit, without affecting audio pitch too much. When you overclock the CPU, the audio speeds up as well. Here are some behaviors in games that he thought worth noting:

Air Zonk - Ran *drastically* faster... still some slowdown though.
Magical Chase - Runs great. Shopping for items makes the screen flicker a bit.
Victory Run - Scaled road breaks up a bit.

Most games just run faster with slightly higher pitch audio. While you're at it, check some of his other nifty mods: Genesis CPU upgrade, Neo Geo home system overclock. Thanks to lawrence for the initial link.