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Demonstration run on Youtube

A project log for PiDP-8/I

Remaking the PDP-8/I using the Pi, simh & a replica front panel

oscarvOscarv 03/30/2015 at 22:372 Comments

I finally got round to making a Youtube movie of the PiDP in action: http://youtu.be/5hyUActgT2E


Some points to note though:

Discussions

Oscarv wrote 03/31/2015 at 22:21 point

Re the screen: I rebuilt a vectorised drawing from photos. The exact process is on the blog site, but putting a photo straight on acrylic would not give acceptable results. The reproduction is pretty much pixel-exact to the original. With the exception of having lowered the bottom brown/white bar a few mm - and having left off the leftmost part of the original PDP-8/I, where there's no controls.

Re the Data Break handling: that's *exactly* the right question. These 3 leds are the only ones where I'm sure the leds do not blink as intended. I'll need some input from the real PDP-8's at the Vintage Computer Festival for handling Data Break correctly. The other light I would not vouch for is Defer, I think it lights up too long at the moment. But I have to see the Real Thing in action to judge that properly...

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warlockd wrote 03/31/2015 at 19:34 point

Do you have the high rez image for the acrylic screen?  If not how did you build it?

Also, does your emulator use the 3 part break light for disk access?  Just curious.

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