https://blog.faceutil.com/2020/03/19/nes-%ed%83%91-%ec%8a%a4%ed%8a%b8%eb%9d%bc%ec%9d%b4%ec%bb%a4-top-striker-%e3%83%88%e3%83%83%e3%83%97%e3%82%b9%e3%83%88%e3%83%a9%e3%82%a4%e3%82%ab-%e3%81%b7/