https://blog.faceutil.com/2022/10/21/gba-%ed%8f%ac%ec%bc%93%eb%aa%ac%ec%8a%a4%ed%84%b0-%ed%8c%8c%ec%9d%b4%ec%96%b4%eb%a0%88%eb%93%9c-%eb%b2%84%ec%a0%84-%ec%98%81%eb%ac%b8%ed%8c%90%ec%9d%bc%ec%96%b4%ed%8c%90%ed%95%9c%ea%b8%80%ed%8c%90/