PiDP-1, or the rebirth of an old machine

https://hackaday.io/project/202541-replica-of-the-pdp-1-pidp-1/log/239666-finished-the-first-test-batch-of-5-machines

#HackerNews #PiDP-1 #PDP-1 #RetroComputing #VintageTech #Rebirth

#Excited!

Apparently #UPS delivers my #PiDP-10 DIY Kit today … just in time for some serious weekend of soldering.

#retro #PDP10 #DEC

https://obsolescence.wixsite.com/obsolescence/pidp10

The early #ComputerGame #SpaceWar is featured in #TheGuardian:

https://www.theguardian.com/technology/article/2024/jun/06/reinventing-the-pdp-10

#RetroGaming #DEC #PDP1 #PiDP

Other half has suggested that I may have ADHD, which wouldn't surprise me. Here's a PDP11/70 kit I bought in 2019 (with the 4mm front panel!), only one of (fuck knows how many) projects I've spent a fortune on but have yet to build. So let's crack on, I figure if I put it in the way I'll do it. #PiDP

https://obsolescence.wixsite.com/obsolescence/pidp-11-building-instructions

The latest version of the #pidp 10 simulation kit now lets you communicate from Linux via a #chaosnet bridge to ITS running on the "10".

E.g. you can use SUPDUP , which is described in the MIT AI LAB Memo 644 (issued in 1983) . SUPDUP was designed by no other than Richard M. Stallman and was intended to be a replacement for telnet. Well, this didn't quite happen. BTW, SUPDUP is short for "Super Duper" (really!!).

Read the memo here: https://dspace.mit.edu/handle/1721.1/5694

Playing around with the PDP-10 ITS (Incompatible Time Sharing system) simulation that is used by the #PiDP 10 project.

Step 1: Try SCHEME (a LISP dialect).

OK, defining a function that squares numbers worked, but WHY??? does 5^2 come out as 31 ???
It took me a while to notice that this is "octal in - octal out". Yeah I guess to the early "hackers" at MIT the decimal notation was just too arbitrary and anthropocentric to justify the extra cycles it would take to deal with it.

John Maddog Hall giving a talk about #Linux and showing off the #PiDP project at #SCaLE21x.

#retrocomputing #altair

(Zur Feier gibts heute ein Bonustürchen:)
🎄Der Computeum Adventskalender🎄
🎅Bonus-Türchen 1️⃣0️⃣🅱️ - PiDP-10 🖥️

Es gibt viele Gründe die 36-Bit PDP nicht zu mögen ...
... aber keinen Einzigen der gegen Oscars PiDP-10 spricht :)

#Adventskalender #Computer #Retro #PiDP #PiDP10

And the #PiDP/11 is completed! I need to stain up the base, and will probably add some actual serial parts once I finish returning my Heathkit terminal.

#retrocomputing