What exactly is this program? Its a Virtual Machine, NOT a Emulator.. It interprets Atari 800 Assembly Language with a few extra instructions for modern computers NO you cannot run Atari 800 ROMS but if you get the assembly source than it can be interpreted…This is meant to help you learn how to write a interpreter/virtual machine as well as teach you the foundations of modern programming languages.http://forums.qj.net/showthread.php?t=35531