Ok after reading these:
http://www.gamesx.com/controldata/nessnes.htm
http://www.q1.fcen.uba.ar/materias/iqi/joygus/tvgames.html
And specifically this: quote
I have bought an extenstion cable and this whole setup isnt working. I am curious if anyone has usccessfully got a nes controller to adapt to a snes plug and then use it with a smart joy or snes?
http://www.gamesx.com/controldata/nessnes.htm
http://www.q1.fcen.uba.ar/materias/iqi/joygus/tvgames.html
And specifically this: quote
You can actually cut the end off a NES controller, attach a SNES controller plug, and expect it to work. The colours of the wires inside the cable are even the same!!
I have bought an extenstion cable and this whole setup isnt working. I am curious if anyone has usccessfully got a nes controller to adapt to a snes plug and then use it with a smart joy or snes?