I made a 3/4player box controller for my Super Gun Deluxe which allowed Megadrive controllers to be used, this must be erm about 7~8 years ago now back when I was realy big into arcade game collecting.
Good luck to you, but be prepared for time and days of utter frustration. Keep at it though, the results are worth it. :)
Good luck to you, but be prepared for time and days of utter frustration. Keep at it though, the results are worth it. :)