Gameboy emulator , core written in C , using Qt for the GUI Still pretty raw (super mario land runs though) , no sound support Documentation used : http://www.codeslinger.co.uk/pages/projects/gameboy.html (gameboy emulation explained, very nice) http://nocash.emubase.de/pandocs.htm (Everything You Always Wanted To Know About GAMEBOY) http://www.docstoc.com/docs/20246782/GameBoy-CPU-Manual (Gameboy CPU Manual) http://www.zilog.com/docs/z80/um0080.pdf (Z80 Family CPU User Manual)