Krikzz, the maker of Everdrive flash carts, has made open-sourced the schematics and software for a SEGA Genesis/Mega Drive flashcart:
Open-ED is a very simple and cheap open source Genesis/Megadrive cartridge. The cartridge does not have its own processor or FPGA, it is built in the old school style using only memory and discrete logic. Cartridge design uses an absolute minimum of inexpensive components.
from Krikzz’s GitHub repo
And, according to cara.city on Bluesky, Krikzz is aiming to sell the carts for $30. That sounds like an absolute bargain. Would you get one? Let me know in the comments.
