Atari800 vs Íris Emulator

Atari800 emulates Atari 8-bit computer systems and the Atari 5200 game console. It supports cycle-exact emulation of the 6502 processor and the NMI, POKEY, ANTIC and GTIA components. The emulator handles ATR, XFD, DCM, ATR.GZ and XFD.GZ disk images, with up to eight emulated drives. It can load Atari executable files and BASIC programs, emulate cassette tapes, and save files to the host computer through the H: device. Users can connect real joysticks or emulate paddles, light pens, light guns, mice and trackballs. Atari800 can save screen snapshots as PCX or PNG and write sound output to WAV files. It runs on Linux, Windows, macOS and Android; source and binary packages are available through GitHub releases, with Linux package instructions for Debian and Fedora. The project describes Atari800 as freely distributable, with source under GPL version 2. Its release notes describe NetSIO and FujiNet support for network SIO over UDP. Atari800 is written in C, and a BIOS is required.

Íris Emulator is a free, open-source emulator for Atari 2600, Atari Lynx, and Atari Jaguar games on 64-bit Windows 10 or 11. The Atari 2600 core emulates the 6507 CPU and TIA, with NTSC, PAL, and SECAM support and several cartridge mappers. Lynx emulation covers the 65C02, Mikey, and Suzy, with LNX cartridges, HLE boot for homebrew, and optional user-supplied boot ROM support for commercial games. Jaguar support includes .j64 and .jag cartridges, RF Cable and S-Video filters, upscaling to 1080p, and Auto, 4:3, or 16:9 display ratios. The interface offers cover-art browsing, a first-launch wizard, fullscreen mode, remappable keyboard and gamepad controls, and ten save-state slots. VST3 audio processing uses a reorderable chain and master gain. Optional Discord Rich Presence requires the Discord desktop app. ROMs and BIOS files are not included.