GEKKO Amiga Emulator vs Jammy

GEKKO Amiga Emulator is a free Android app that emulates Commodore Amiga systems. Its listed emulation covers Amiga graphics, floppy-drive behavior, and hard-disk behavior. Controls include mouse input, virtual mouse controls, and joystick switching between ports 1 and 2. Bluetooth joypads are supported. The app listing describes fast loading and a Force 256 display-aspect option. Users can use a command line to insert text or press a key. GEKKO links to an Android version on Google Play, where the app is listed at free and contains ads. Google Play gives it an Everyone content rating. The developer is named as Gennaro Coda, with an address in Gragnano, Italy, and support is available at [email protected]. The developer’s privacy policy says its apps and games do not collect information. Google Play separately says the app may share device or other IDs with third parties, collects no data, encrypts data in transit, and does not allow data deletion.

Jammy is a free C# Amiga emulator for Windows and Linux that aims to run Workbench, games, and demos. It lists support for A1000, A500, A500+, A600, A1200, A2000, A3000, A4000, and CD32 models, with OCS, ECS, and AGA emulation. It emulates components including the Copper, Blitter, CIA, sprites, playfields, and audio. Supported floppy image formats for reading include ADF, zipped ADF, ADZ, DMS, and RP9; ATA hard disks support reading and writing. Development tools include a debugger, disassembler, automated code analysis, and SQLite storage for disassemblies. JavaScript and Lua APIs can run code on breakpoints, and a web API supports custom user interfaces. The releases page lists Windows Alpha and Linux Alpha release 0.0.30. The project reports DMA timing problems, incomplete cycle accuracy, poor emulation of CPUs above 7 MHz, and software that does not yet work. CD32 CD-ROM and NVRAM do not work, the IPF floppy reader is broken, and there is no ARM build. Linux lacks debugging interfaces, and its scripting, web, and database APIs need more work.