Where did UNIX come from? A successful operating system called Multics. Here is a demo of Multics in 1972.


Good news! MIT professor Gerald Sussman has found a fan-fold listing of ITS version 138. That's for running on the PDP-6, which is super ancient!

How to get this scanned, though?!?

SDF is upgrading twenex.org to an XKL darkstar which contains a pair of TOAD-2s running TOPS-20. 36bits forever.

I had fun live coding PDP-10 the other day, so here's a new video with live debugging. Writing hello entirely in DDT.


Munching squares. HAKMEM item 146 recoded for PDP-10 and output to a simulated DEC 340 display.


PDP-10 and 11 simulation on display. From left to right: Dazzle Dart, KA10 model, Spacewar, PDP-11/40 model, Harrenstein's WATCH, Name dragon free display.

Did you know TOOT was a command in the Logo porgramming language? It was used to sound a horn or whistle on the turtle.

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"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko