Will Atari 7800 play 2600 games?
The 7800’s compatibility with the atari 2600 is made possible by including many of the same chips used in the 2600. When playing an atari 2600 game, the 7800 uses a television interface adaptor chip to generate graphics and sound. The processor is slowed to 1. Mhz, to mirror the performance of the 2600’s 6507 chip. The atari 2600 hardware was based on the mos technology 6507 chip, offering a maximum resolution of 160 × 192 pixels (ntsc), 128 colors, 128 bytes of ram with 4 kb on cartridges (64 kb via bank switching).