https://blog.faceutil.com/2017/03/31/%ec%b6%94%ec%96%b5%ec%9d%98-%eb%8f%84%ec%8a%a4%ea%b2%8c%ec%9e%84%ec%9d%84-%ed%95%b4%eb%b3%b4%ec%9e%90-dosbox-%e3%8e%89/