https://blog.wongcw.com/2018/11/30/%e9%bb%91%e7%a7%91%e6%8a%80%e6%bb%bf%e6%bb%bf%e7%9a%84%e8%bf%b7%e4%bd%a0vectrex%e4%b8%bb%e6%a9%9f%ef%bc%9a80%e5%b9%b4%e4%bb%a3%e5%b0%b1%e6%9c%89%e5%bd%a9%e8%89%b2%e7%95%ab%e9%9d%a2/