"pdp-1 website"

[Michael Cheponis]

I posted this URL before,  it's the closest thing I know of to a pdp-1 website: it is the CHM Restore Team's archive of what we've done to the machine in pictures, spreadsheets, simulations, hand notes captures, etc.  It's missing scans of the Official Logbook -- which, to this day, is meticulously updated with what was done on the machine (e.g. the starting elapsed time meter, what was done and by whom and when, and the ending elapsed time meter).  That's a to-do item: scanning all that in.

https://drive.google.com/drive/folders/1bkoipL28Y59JjqGswWkzKQ_LLr4u6MMJ?usp=sharing

It has all the Restoration photos from 2004-2005, and, as I say, maintenance notes for the past 21 years.

As to the Type 30, it's particularly difficult to get good video of its actual decay performance, as the camera's auto modes 'un-does' some finer features that you see in person.  Nonetheless, there are a few dozen short videos of the Type 30 misbehaving that we were using for diagnosing.  (The Type 30 was down for gosh at least 3 months last year, as the leakage on the 2N1719 driver transistors, in each quadrant, was just too much to keep a stable display, and we searched the world (quite literally) and found that the type 2N2494 was a superior substitute, and we used up all that we could find, and the rest are 2N1719s. )

Now THAT would be fun to put in the simulator/emulator:  have things go randomly flaky as the simulated components age!    

-Mike

[Milo Velimirović]

There’s also Gunkies. Get an account there and build it out.

https://gunkies.org/wiki/PDP-1

—Milo

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