https://blog.faceutil.com/2017/04/30/mame-%eb%b0%b0%ed%8b%80-%ed%86%a0%eb%93%9c-battle-toads-%eb%8b%a4%ec%9a%b4-%eb%8b%a4%ec%9a%b4%eb%a1%9c%eb%93%9c-down-%e3%88%83/