Hello there! I've known this forum for some time now and actually followed a few threads on here from time to time. Anyways lately i've gotten in touch with a guy who's making some awesome stuff for GB/GBC/GBA because i was interested in one of his other products. Anyways he also makes these. It's a basic flash cart much like the older GB/GBC flashcarts. Because i've been in search of a GBA flashcart that actually supports RTC ( M3 is pretty much impossible to find nowadays) i went ahead and asked him if he could develop with RTC. The answer was this: Code: If there was enough interest I could develop a GBA with RTC, however it seems they are not sought after. He suggested i'd ask around for people interested in it and since i don't really know a better place i thought i'd just ask here if there was even a slight interest in this. Thanks for reading this and have a nice day!