[PiDP-1]

Bill, On Saturday, September 27, 2025 at 1:22:05 PM UTC+2 wjegr...@gmail.com wrote: How are binaries

https://obsolescence.dev/pdp1-manual.html On Saturday, February 21, 2026 at 11:30:24 PM UTC-5 b.de...

Aw, you should have followed the parenthetical lead and named it YAD1, or yad1 if your prefer

The line drawing demo and the tracking demo are also now in .../FunStuff/Demos. The program selector

I decided to switch to a reader thread for the lightpen. It's a lot cleaner than all the poll()

That''s the initial light pen locator. Unless a dot is seen, there is no knowledge of where

Another update. As before it can be found in the Files section of the project on Hackaday. I brought

And the drum. And the symbol generator, And the clock. In the latest repo update. Bill

Hi Bill, Just a small patch to consider where I have simulated a circular Light Pen aperture. I have

"The CHM does have a type 33 symgen and there's a pic somewhere of it working. It's not

The disassembler has been updated in its branch, also in the mods branch. The mods dir now has all

Interesting. It doesn't seem to be implemented that way in pidp1, I'll dig into it. Yes, the

And here's the new one running. Lightpen works! And it's pretty, too. Bill

Thanks to patient help from ke...@mcgrath.name my repo has been updated. You can now install the full

On Wednesday, February 4, 2026 at 5:46:13 PM UTC-5 ke...@mcgrath.name wrote: I can imagine an actual

I was prompted to provide a list, here it is.

Argh! Never mind, I'm not sure what I was looking at, but dcp is set and everything seems to be

Good question. BenQ has this to say regarding LCD monitors: "In principle, BenQ monitors are

After more digging and semi-deciphering the posted PDP-4 diagnostic code, here's what seems to be

My rack kit, S/N: 089 is now finally complete (controllers, HDMI monitor, audio and labels)! I

After spouting off about proper use of dpy, ioh I realized I wasn't walking my talk. I redid my

Cool. I had seen that description, but it's vague on just how and when the AC and IO are valid.

Thank you Bill, and thank you -R for your perseverance in getting the game running on your system. I

There is another PDP-1 feature, Flags, that can be used in your programs. The DEC PDP-1 computer has

It was quite remarkable for the time. I remember seeing a sentence in one of the hardware manuals

I do see an interesting/annoying moving intensity band. I've seen this in some other programs. I

Thank you for the corrected 9-pin image that you have working in your setup !! On Mon, Jan 26, 2026

There's also Gunkies. Get an account there and build it out. https://gunkies.org/wiki/PDP-1 —Milo

That's great. I actually still have my RL series books somewhere, might have to dig them out. I

#0007 has joined the gang in South Harbour, Falkland Islands. He took a few days to build, including

While testing, I ran into one column of switches not wrking. Tried using a different raspberry pi