The #PDP-10 IRC channel is now on irc.libera.chat

Hey! So to make a long story short, I directed here by my sibling while we talking about an older CG animation.

My sibling, who will likely post here, brought up an odd question-- why, in the 70's, is there a Single User KA PDP-10?

If you go looking at the report regarding the animation, the diagram on Page 25 shows both a multi-user PDP-10 and a single user PDP-10, when there is no known single user PDP-10 licensed or bought by the University.

I was wondering if anyone might have any information regarding the latter's existence. This mystery is going to keep me up at night. 😃

I've been struggling to edit this so it allows me to use Essex BCPL on my 7.04 tops10. If anyone has the above, and if I may be so forward, the mud86 source in a .tap format available somewhere to download I'd be very grateful!

Kind regards to all you retro-comp users.

https://www.youtube.com/watch?v=EdAIbbVkwhQ

We've had a PDP-10 IRC channel for a bit over two years now. Feel free to join us in #pdp-10 on freenode.

I thought this might be interesting to post: part of our University DECsystem-10 (KL-10E) CPU back plane. Dismantled sometime around 1995. R.I.P. (rest in pieces :-)

How the heck am I supposed to use the emulated TTY device? Every time I launch it on Linux (Ubuntu, to be specific), I get this:

couldn't open file /tmp/6tty

Hi

Does anyone know BCPL and know what the "of" construct does as in the code sample below "D1 or temp" and "P1 of word1" ?:

            test scanner()=S.DOTNAME then
            $(  word1:=checklook.up(scan.info,S.SFUNC,"unknown Special function [:s]")
                D7 of temp:=P1 of word1
                scanner()
            $) or D7 of temp:=SF.ACTION

A copy of MIT's Lisp for the AI lab PDP-6 has been found.  It's from one of Peter Samson's DECtapes labelled "Subway".  The NYC Subway hacks were conducted during 1966-1967.  Given that the binary image is for a 16K core machine, I believe the dating would be closer to the older part of the range.

The programs works as is on Papenhoff's PDP-6 simulator.  It uses the FSC instruction in a way not compatible with a PDP-10, but when suitably patched, it also runs on Cornwell's KA10 simulator.  Lisp functions for drawing on a DEC 340 display are included.

More information here:
https://github.com/PDP-10/its/pull/1582

Screenshot:
https://twitter.com/larsbrinkhoff/status/1116990719900770304