https://blog.faceutil.com/2017/10/12/mame-%ec%95%84%ec%95%bd%ec%8a%a4-%ed%83%80%ec%9d%b4%ed%91%bc-ajax-typhoon-%eb%8b%a4%ec%9a%b4-%eb%8b%a4%ec%9a%b4%eb%a1%9c%eb%93%9c-down-%eb%a7%88%eb%a9%94-%ec%98%a4%eb%9d%bd%ec%8b%a4/