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What V.Smile hacks have been done? Answered

I would like to develop games for the V.Smile, but I don't know how I should do it. However, upon disassembling a V.Smile Plus controller (which had labeled communication pins), I found the V.Smile controller pinout:
1=VCC (3V)
2=RTR (to request a report from the controller)
6=RTS (to prepare the controller to change the state of an LED)
Also, if you want to make your own controller, make sure that it is polarity-protected, because the power-down voltage can be as much as -1V.


Have you been able to reverse engineer the protocol? I picked up just the controller unit from a Goodwill, and I'd like to figure out how to use the existing microcontroller in the unit.