Terraonion MegaSD Sega Genesis / Mega Drive Flash Cart

A flash cartridge for the Sega Genesis and Mega Drive that integrates a complete FPGA-based recreation of the Mega-CD/Sega CD hardware, enabling users to run CD-based games directly from a cartridge slot without the original CD hardware. It supports ISOs (BIN+CUE) and ROMs, with instant loading from RAM and compatibility with region-free or original Sega CD BIOS files. In addition to Genesis and Mega Drive titles, it also supports Master System and 32X games (32X hardware required). The MegaSD includes features like save states (up to 8 per game), a built-in cheat engine, and an in-game menu for rebooting or swapping titles. Game data, including cartridge saves and Sega CD backup RAM, are saved to a microSD card. It also supports enhanced games with CD audio, Master System FM audio, and is fully compatible with devices like the Analogue Mega Sg.

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