really? 0.72, what about the romset does it have to be the mk roms from that mame release? no,coz i originally had roms for mamex-b6,and i just transferred the mk roms over to mameox and they work a charm.i think its certain roms that seem to get updated from my experience anyway. and these same roms played on mameox128 and mamedox arcades,sound disabled obviously.