After looking around for cheap original Gameboy (color) flashcarts i decided to build one myself. All the needed infos are avaylable on the internet and only a few parts are needed so the pcb project was born! The Flashcart pcb is a simple replacement for a retail game PCB and you need an MBC5 donor cart for the shell and mbc5 chip. The flash rom is in a tsop40 package and you can use an 8Mbit, 16Mbit or even an 32Mbit flash-chip. The cart-flasher/dumper is based around an Atmega8515 and has a windows gui to read and flash savegames, read the rom and in case off a flash cart programm a game to it. The cart-flasher can also be used to backup your savegames before you replace the internal batery off a game module. If there's any interest i would gladly offer the card flasher/dumper and flashcart pcb for anyone who's interested in building one!