Atari 7800 ✔

• Alias: Atari 7800 ProSystem
• Emulator: lr-prosystem
• Rom Folder: SEVENTYEIGHTHUNDRED
• Extensions: .a78 .zip
• Bios: 7800 BIOS (U).rom

Roms must contain headers or they will not function. For an explanation of headers and why they are important, see this comment