I believe that this is the same techniques that were covered in the excelent series "How oldschool graphics worked"[1] [1] https://www.youtube.com/watch?v=Tfh0

I believe that this is the same techniques that were covered in the excelent series "How oldschool graphics worked"[1] [1] https://www.youtube.com/watch?v=Tfh0ytz8S0k https://www.youtube.com/watch?v=Tfh0ytz8S0k