https://blog.faceutil.com/2017/05/06/%ec%b6%94%ec%b2%9c%ea%b3%a0%ec%a0%84%ea%b2%8c%ec%9e%84%ec%b4%88%ec%8b%9c%ea%b3%b5-%ec%9a%94%ec%83%88-%eb%a7%88%ed%81%ac%eb%a1%9c%ec%8a%a4-1%ed%83%84-mame-%e3%81%88/