I changed the overlay, kept only two buttons, and wired it up for the 7800:
Now, where it becomes different, is with the cable. I wanted the 'Select/Pause/Reset' buttons ('Home' being mapped to 'Pause') functional on the controller, so I used a D-Sub 15 Pin (VGA) connector:
Pins 1 to 9 map to 1 to 9 on the 15 pin connection, but Start, Pause, and Reset map to 11, 12, and 13 respectively. When I want to use this controller with a standard 7800 (of course without the Select/Pause/Reset functionality), I made a cable to just pass the normal 7800 joystick pins:
Now, any 7800 I want to use the controller with the entire array of buttons, I just wire up a male 15-Pin VGA connector (pins 1-9 stay the same, 11, 12, and 13 map to Select, Pause, and Reset, respectively) and use a VGA extension cable (a thin one if possible).
(sorry for the blurry pic but you can make out the connector on the right hand side)
Good idea?
Thanks,
Bob
EDIT - Didn't realize I kept writing 'Start/Pause/Reset' instead of 'Select/Pause/Reset'. Fixed.
Edited by PacManPlus, Sat Feb 4, 2012 3:18 PM.













