Todd W H

You guys are smart. I have always wanted to program a homebrew game for the Odyssey2. I have seen some games programmed for the O2 that look amazing with today's know how in programming. I want to push the system to its limits. I have TWO questions? Where can I learn to program for something like the the Atari VCS, Intellivision, O2 etc? What do I physically need at my home to accomplish this? Any information would be greatly appreciated.