ProSystem Emulator

ProSystem Emulator is an open source Atari 7800 emulator for Windows, developed by Greg Stanton.

It emulates the Atari 7800’s CPU, graphics chip, sound and joystick controls.

ProSystem emulates both the NTSC and PAL versions of the Atari 7800, which is unusual because the console had only a small release in PAL regions.

Development of ProSystem ended in 2008. Its source code was released, and although the standalone emulator has not been continued, its code is the basis of the ProSystem core for RetroArch.