dosbox
https://www.52pojie.cn/thread-412954-1-1.html
https://blog.csdn.net/emoheithree/article/details/51232793
https://blog.csdn.net/sinat_27382047/article/details/79735649
https://blog.csdn.net/maguanzhan7939/article/details/78608345
https://www.zhihu.com/question/36332461
https://blog.csdn.net/sinat_27382047/article/details/70339455