https://blog.faceutil.com/2017/05/06/mame-%eb%8d%94%eb%b8%94-%eb%93%9c%eb%9e%98%ea%b3%a4-2-%eb%b3%b5%ec%88%98-double-drangon-2-the-revenge-%eb%8b%a4%ec%9a%b4-%eb%8b%a4%ec%9a%b4%eb%a1%9c%eb%93%9c-down-%e2%85%a7/