Linked from that page is this very nice description of how the Apple 2 disk operating system was written. In 7 weeks, on punch cards and paper tape! https://co

Linked from that page is this very nice description of how the Apple 2 disk operating system was written. In 7 weeks, on punch cards and paper tape! https://computerhistory.org/blog/apple-ii-dos-source-code/ https://computerhistory.org/blog/apple-ii-dos-source-code/