« Reply #2 on: October 13, 2011, 11:23:32 PM »
lol, but did they use emacs or vi to write the code as both were written in C if I remember correctly 
According to Andy Hertzfeld's account they used Lisas for development work, and IIRC the Lisa software was also all Pascal or assembler, so it's possible C didn't enter the equation (on the OS-dev side of things) until much later.

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