Saturday, April 19, 2014
JAMMA test rig box (Part 2)
I decided to package up my JAMMA test rig so that I could demo Crazy Otto at Rochester BarCamp for today. My design was basically a box that would house the entire thing, with a nice control panel for player 1. As you can see in the above image, I have the A/V cable going to an external monitor. Broken out on the box are player 1 and 2 start, coin 1, and player 1 controls - joystick and 3 buttons. On the right side of the box are the three "coin box" controls -- Test, Tilt, and Service, for testing those functions of the board. Also on that side is a nice handle to help it be portable.
This is a continuation of part 1, where I updated the AV connections of the rig.
I started by cutting a sheet of plywood I've had in our garage for a while. I also built the control panel using spare parts I had.
Some standard microswitch buttons, and a nice ball-top leaf-switch joystick.
For reference, here's the JAMMA pinout standard: (Most games since the late 1980s use this or a variant of it -- for example, Neo Geo adds additional buttons on unused pins, Rampart uses a trackball on the joystick pins, and Mortal Kombat has additional buttons on another interface harness.)