Dead Test cartridge version 781220. If you have a eprom burner, you can reprogram the Winbond W27C512 chip with different bin files.
When pandemic started I stayed at home. I needed something to do to keep busy, so I practiced soldering by putting together various PCB projects I found on PCBWay and other places. I have a lot of these projects both completed and some unfinished. I\'m trying to get rid of everything, so that is why I am selling. I hope to recover some of the money I spent for the PCBs, the various parts and shipping. I am not making any profit on these units as can be demonstrated by how much others are selling similar units.
Message me if you have any questions.