The Atari 7800 ProSystem, or simply the Atari 7800, is a video game console re-released by Atari Corporation in June 1986. The original release had occurred two years earlier under Atari Inc. The 7800 was designed to replace Atari Inc.'s unsuccessful Atari 5200 and later to re-establish Atari Corp.'s market supremacy against Nintendo and Sega. With this system, Atari Inc....