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I've put a game backwards into my snes multiple times (it had no case and I assumed wrong), and besides LED blinking briefly it had no sidefects whatsoever. Still works like a charm - both the game and the snes.

Whoa, that was super-easy. Nice way to start making your own joypads. Couldn't find an easier first time project

Here are the pics, if anyone cares: http://picasaweb.google.com/ljubomir.simin/SMSJoypad#

Thanks for the help!

So it is like this, with one line per control?



Which resistance should I use?

Hi,

I'd like to make my own SMS controller however I don't have any spare controller boards left. One could make a NES controller using only a single 4021, and a bunch of resistors. Where could I find the scheme depicting SMS' controller? I'm pretty new to the Sega hacking.

Cheers!

I don't know if you still need the info, but I just got some old SMS, and registered just to confirm that R1 and R2 are the same.

Good luck!