qwertymodo has recently released a mod for the Super Game Boy that allows you to correct the clock speed to match the original Game Boy’s.
As explained in the Super Game Boy section, Game Boy systems run at a clock speed of 4.194 MHz and the SGB runs at 4.295 MHz. This causes a video “stutter” every few frames, which is most noticeable in side-scrolling games. Also, the games play slightly faster, which also results in a slight audio pitch change. This mod will correct that speed change.
The board can be purchased here on Tindie: https://www.tindie.com/products/qwertymodo/super-gameboy-clock-mod/
Installation instructions can be found on qwertymodo’s site: http://www.qwertymodo.com/hardware-projects/snes/super-game-boy-clock-mod
End Date: Monday Oct-21-2019 15:45:46 PDT
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Also, for more info on qwertymodo, check out a recent interview: