Thanks! I spent a while trying to get that emulator working. Going to see if I can get gamepad support working a bit later hopefully.
The game is on git hub (https://github.com/mhughson/mbh-firstnes) but I'm not tracking issues there. I probably should have, but there hasn't been very many to be honest, so I've just been tracking in a TODO comment in the code :D
Looking forward to your feedback!