Ok which Duo / PC Engine controller hack would you like to see next...VOTE

[Zeon]

While on the subject of controller mods, I just thought of a sweet candidate:

http://www.playmessiah.com/products/classics/generation-nex-wireless-arcade-stick.htm

or

http://www.playmessiah.com/products/classics/generation-nex-wireless-controllers.htm

Given that you can request a receiver so that they work on an original nes, how easy it is to adapt an nes controller to the pce, and now that they are making repro nes controller ports, you should be able to easily make an adapter so that they work on pce hardware. 

I don't have the fundage to try right now, but anyone else feel free to try. It would be sweet if it works, I don't see why it wouldn't unless they did something funky in the controller's design.

[Duo_R]

I have thought of the same thing, but this one would be trickier. I think u would have to make an adapter that converts from PCE controller port to NES port. What I have been doing is replacing internal circuitry inside a NES controller, but to make that work it would be external circuitry. It is possible but I wouldn't know where to start since I have never made an external adapter.

It is possible to convert the original NES advantage though (and there is plenty of room to work with inside one of those). I unfortunately sold all of mine but I still have a Turbostick.

[Zeon]

Ah i see the signals on the pce differ completely from the nes, So you basically replaced the nes's 4021 with a 74HC157 to get your controller hack working? That does make things more difficult, unless the playmessiah receiver is easy to dismantle, then you could do the same thing.

[Duo_R]

yes exactly, I replaced the chips exactly as you described. In the Sansui project I even replaced the NES turbo chip with a 74HC163 turbo chip so the circuitry is identicle to a Duo controller.

The main issue is taking 5 data lines and stepping up to 8, I don't think it is possible to get that to even work. Too bad because that controller rocks, but it would work in Wii using Gamecube to NES adapter!

[Zeon]

The only way to do that is with multiplexors and demultiplexors. Also technically there are 7 pins on the built in nes port we can utilize, the other two were used for peripherals such as the light gun. Though I am not sure how easy it is to extract the two normally unused pins.

[Duo_R]

I take it back, David Shadoff (old PCE guru) once stated that it is possible to do an external circuit adapter, but I am not smart enough to figure that one out.... 

[papa_november]

You should hack the SV-230 InterAct PC Propad. Although the built-in turbo may have to be sacrificed for the Select and Run buttons, it has the advantage of not being terribly valuable and can be found relatively easily for less (often much less) than say, an NES controller.

It's pretty hackable, I just modified one to work with my MSX and it's a fairly decent pad.