Atari 7800
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 from 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.

On January 1, 1992, Atari Corp. officially dropped all remaining support of the 8-bit line.
* Information provided by Wikipedia

Manufacturer Atari, Inc.
Atari Corporation
Type Home video game console
Release date May 1986
Introductory price US$79
Discontinued January 1,1992
Units sold 3.5 million
Media ROM cartridge
CPU Atari SALLY 6502 (“6502C”)
@ 1.19-1.79MHz
Memory 4KB RAM
4KB BIOS ROM
48KB Cartridge ROM Space
Display 160×240, 320×240 (160×288/320×288 if PAL)
25 on-screen colours out of possible 256
Graphics MARIA custom graphics chip clocked at 7.16MHz
 Backward Compatability Atari 2600

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