NOTE: If you use the roms in this archive for the emulators out there, or even if
you don't, you should really take a look at Kevin Horton's 2600 tech
page. It'll give you all the information you need to be successful!
Chris Wilkson is working on a new controller for the Atari 2600 and
systems that use the same format. It's basically a replacement keypad. If
you're interested, here's a link. off-site link