Friday, May 17, 2019

Super Gameboy clock speed mod board

I recently installed Qwertymodo's Super Game Boy clock mod board into my SGB. The install was easy; remove a few resistors, solder the board to the exposed pads:


Sure you can do the old method mod of just replacing the oscillating crystal, but that breaks some cool features of the Super Game Boy where it's possible to speed up and slow down the gameplay using the Super Game Boy Commander controller from Hori.

One of the things I really like about the SGB is all the extra custom features they added to the games that support it.  Things like special palettes, custom borders, and in some games a 2-player simultaneous mode without the need of a second linked gameboy. This is particularly cool in some of the fighting games on GBC.  It was just too bad that the stock SGB that was released in North America had a different in clock speed, which introduced frame "hitching" and higher pitched sound.
I'm really happy with Qwertymodo's board and recommend it to anyone looking to do this upgrade to their Super Gameboy's.



Here are a few glory shots from my SNES Jr. running on a Sony PVM:




For Street Fighter 2, the border actually changes based on what stage you're playing!










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