During the Emacs meetup yesterday, we started talking about Emacs LISP (of course) and I mentioned that I first learned LISP years (decades) ago. I was asked what version of LISP this was and I could not answer. So I've looked into this, just out curiosity.

I learned LISP on a mainframe (Amdahl 470V/6), an IBM plug compatible system. This system ran the Michigan Terminal System as its operating system. The version of LISP available on this system was 1.5, according to Wikipedia: see link below and, in particular, reference 92 in the list at the end of the page.

As an aside, I loved MTS. Very impressive time sharing system, supporting hundreds of simultaneous terminal users (with the aid of what were called *front end communications processors*).

https://en.wikipedia.org/wiki/Michigan_Terminal_System

#Emacs #LISP #EmacsLISP #MTS #MichiganTerminalSystem #Amdahl #Wikipedia