I have installed a new joystick for a MAME Cabinet I inherited because I want to run Robotron. But I can't figure out how to connect two joysticks.
For your second joystick you can use any 4 inputs
except the ones for your first joystick since Robotron needs separate inputs for move (first joystick) and fire. (second joystick)
- If you have 4 unused inputs, use those.
- If you don't have 4 unused inputs, you can "piggy-back" on a button input by wiring the two switches in parallel.
-- Just put both switch-to-input wires into the input terminal and tighten down the set-screw.
Button switch
____/____ Daisy-chain ground
Input ____|
|____/____ Daisy-chain ground
Joystick switch
- The diagram below shows "piggy-backing" 4 inputs for a 4-way and an 8-way joystick. (same wiring as above)
-- You'll use four button switches and the four switches from your second joystick so your move and fire directions are separate in Robotron.
-- When lines cross, a dot = connected and no dot = not connected.
Scott