https://blog.faceutil.com/2017/03/15/dosbox-conf-dosbox-%eb%8f%84%ec%8a%a4%eb%b0%95%ec%8a%a4-%ed%95%9c%ea%b8%80%ed%99%94-%ea%b7%b8%eb%9e%98%ed%94%bd-%ec%b9%b4%eb%93%9c-%eb%9e%a8-%ec%9a%a9%eb%9f%89-%eb%93%b1-%d1%91/