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4 player panel encoder questions

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bkenobi:

The GP-Wiz40 has 40 inputs.  8 of those inputs are set up as 2 digital joysticks and the rest are for button inputs.  However, there's nothing keeping you from using 4 or 8 of those inputs for 1 or 2 more joysticks.  Also, this interface has a feature that allows you to use it for rotary joysticks (think Ikari Warriors) if you want.  I've been using the 32-input version of this encoder for years without any complaint.

From what I read, the KeyWiz40-ST has 40 inputs and, in addition, 32 of those can be used with the Shazaam! button to add more capability.  I wouldn't call that 72 buttons, though.  Anyway, I don't read that 8 of the buttons are not usable.  I think those are just the 8 inputs used for the 2 preconfigured joysticks.

deepblue:

+1 for the IPAC4

That said, My 4 player panel only has one coin button, which I have configured in Mame to credit P1,2,3 and 4 simultaneously.

Personal preference in the end, but using a coin button isn't exactly authentic anyway right? :)

If you want to keep the aesthetics of 4 buttons you could just wire all 4 into one keywiz/ipac input and config Mame accordingly.

For what it's worth I also have a working coin door that will wire to P1 and P2 respectively, but just for fun. 

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