https://blog.faceutil.com/2017/04/30/mame-%ed%8c%8c%ec%9d%b4%eb%84%90-%eb%9e%a9-3-final-lap-3-%eb%8b%a4%ec%9a%b4-%eb%8b%a4%ec%9a%b4%eb%a1%9c%eb%93%9c-down-%ce%b8/