Well, someone started a project for a GBA emulator for 'normal' flashcards about a year ago (possibly more), but there was talk of viruses and shit and it only ran at a couple of fps so not really worth anyone's time. Maybe that changed, though, so here's the links you need if you're interested: https://github.com/ichfly/gbaemu4DS http://ichfly.github.com/gbaemu4DS/