Hello,
Some time ago I bought 4.5$ Sega game-pad clone as it had this cable & narrow version of DB9-type connector (no screws). I needed this kind of cable badly for the retro project that I had. The controller was left to drawer without a cable for few months… but then I ended up to this site!
Yesterday I fitted Arduino Pro Nano inside the controller and now I have 7-button Hackvision clone up and running! That Asteroids is really amazing piece of work! Good job, I really enjoy the authentic retro feeling of it… Especially when played from small CRT-monitor… Best part is that with about 10$ I got both the cable that I needed AND a new gaming console! Can’t really ask for much better deal than that. 😀