[PiDP-1]

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

Hi Angelo, Well, that was a surprise. I came to the PiDP-1 via PiDP-11/70, PiDP-8, and PiDP-10, all

I'm friends with Gordon's son Brigham. (We worked together for a long time at a medical

Hi, I have a PiDP-1 Rack with USB for Tape I/O, keyboard and mouse. Attached is a video capture of go

In fact 364.4 smoots long, plus or minus one ear. On Mon, Nov 3, 2025, 9:00 AM Bill E <wjegranite@

Fixed it! Found the answer in another thread on here. We had a problem running the install.sh

> F15_PDP1_Handbook_Apr60.pdf as well as the preliminary pdp-3 spec don't have cal/jda "

Hi, Wandering about the internet I was surprised to find this documentation:- A Time Sharing System

That fixed it, readin now loads to the specified bank! Thanks, Bill

Angelo, my first try with my pdp1 replica was also a led matrix, but now i drive all leds with gpios

I'm embarking on yet another goodie, this time a modernized version of the Type 630 Data Control

Ya the Recent sidebar choice (OS feature) in the GUI works pretty well. Just one extra click. I tried

Some of the -1D add-ons are certainly strange, like ring mode. The load/store character instructions

It was commented out in pdp1.h. I just put it back in, seems to work fine. Bill

I notice this when I hit 'read in'. But I wrote a very simple program to load words from tape

Thank you! that will make it easier to synchronize our stuff. I won't promise that i'll merge

You can find my verilog PDP-1 here, though i never put it on an FPGA because peripherals are always a

Sorry to be useless: never used that feature myself, but oscar should know! On Saturday, October 25,

You can skip choosing the file again and again, it remembers and assembles the new version. But yes,

I should mention that I resolved this issue but don't know why. I switched to the native Pi

Ok, what and why? It was a 3 channel dma option used by external hardware that needed fast block

Ask away. Be sure to include relevant info, such as native macro or the macro1 cross-assembler. If

Sorry, I meant to ask if a PDF version of the 2025 manual is available? On Mon, Oct 27, 2025 at 7:10

I just added rotate.mac, which rotates between up to 3 different programs stored on the Type 23 drum,

Yes indeed 😂 you must find out how the reader works than its easy to connect the datalines to the

I wouldn't be able to get any if they were 'actual' size. I like the smaller format so I

It seems a lot of the -1D mods were semi-random and of course the -1X was bonkers. Well, I

Hello, The remaining parts of my rack kit have moved me to build another PIDP1 with the case and the

tt has circle, pdp1m13, snowflake, and spacewar48 on it, use with drumloader. It's using tracks 0

It improves over the earlier drum loader. You can save 16 of your favorite programs and load them

I just looked and the double quote " is missing after the low on the web page. Thank you for