People implemented some pretty crazy disk read/write routines on top of this for copy protection... I find it super interesting. https://www.bigmessowires.com/2

People implemented some pretty crazy disk read/write routines on top of this for copy protection... I find it super interesting. https://www.bigmessowires.com/2015/08/27/apple-ii-copy-protection/ https://www.bigmessowires.com/2015/08/27/apple-ii-copy-prote...