The Atari 7800 ProSystem, or simply the Atari 7800, is a home video game console officially released by Atari Corporation in 1986. It is almost fully backward-compatible with the Atari 2600, the first console to have backward compatibility without the use of additional modules. It was considered affordable at a price of US$140.
The 7800 has significantly improved graphics hardware over the 2600, but uses the same audio chip. It also shipped with a different model of joystick than the 2600-standard CX40.
The 1986 launch is sometimes referred to as a “re-release” or “relaunch” because the Atari 7800 had originally been announced on May 21, 1984, to replace Atari Inc.’s Atari 5200, but a general release was shelved due to the sale of the company. A few units were released to test markets in June 1984 though.