1CHIP 50/60Hz electronic switch

1CHIP 50/60Hz electronic switch

For use with SuperCIC or in case you don’t want to switch quartz crystals mechanically. ;-)

Also includes PAL/NTSC switching for the video encoder.

1CHIP 50/60Hz switch (PDF)

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This may be a stupid question but where do you connect the arrows below X1 and X2 to?


I was right it was a stupid question :) , thanks for the answer though.

I’m not even going to pretend that I understand how this circuit works but hopefully I will be able to put one together.

I have been hoping for something like this since I first saw your SuperCIC last year but realised that I had a 1-CHIP SNES. Thanks for your great work on the SuperCIC and 1CHIP 50/60Hz electronic switch. Now I can finally install one in my 1-CHIP SNES :)

[…] has improved this mod even further and has now provided details of how to do this if you have a one chip PPU SNES (more difficult to mod for 50/60hz).  Then there’s the In Game Reset (IGR), for controlling […]


Du bist doch auch deutscher oder?
Es ist relativ schwierig hier an Quarze ranzukommen. Ich finde sie nur bei Mouser. Aber 20€ Versand sind schon etwas heftig.
Wo hast du deine her?


Hello Ikari01,

I would like to install a SuperCIC chip in my SNES.
I have an SD2SNES, and the option “autoregion patching” is enabled.
How does “autoregion patching” work? It applies the patch D4?
If yes, I do not have to install the PatchD4 chip?

Regarding the IGR, the SD2SNES offers the option “in game menu” so it’s not necessary to install the IGR?
What is the best solution ? Only SuperCIC to avoid a conflict with the D4 + IGR patch?


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