Commodore 64 / NES game controller - Modifying a Nintendo controller for the commodore 64

Project video of converting a cheap Nintendo NES style controller to work with commodore 64 for games including the Super Mario Brothers 64 port. LINKS: https://www.amazon.com/gp/product/B07FW2GT3T/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 https://www.youtube.com/watch?v=cLb0SDlvmfI&t=48s http://wiki.icomp.de/wiki/DB9-Joystick https://www.nintendo.co.jp/clv/manuals/en/pdf/CLV-P-NAAAE.pdf