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Angelo Papenhoff/aap
, …
Oscar Vermeulen
20
9/28/25
What are you doing with your PiDP-1
Bill, On Saturday, September 27, 2025 at 1:22:05 PM UTC+2 wjegr...@gmail.com wrote: How are binaries
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What are you doing with your PiDP-1
Bill, On Saturday, September 27, 2025 at 1:22:05 PM UTC+2 wjegr...@gmail.com wrote: How are binaries
9/28/25
Bill E
, …
sunnyboy010101
21
Jan 14
My pidp1 hardware hack
The Elecrow 7in HDMI touch screen arrived today. It has some stuff I really like, such as speakers (
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My pidp1 hardware hack
The Elecrow 7in HDMI touch screen arrived today. It has some stuff I really like, such as speakers (
Jan 14
sunnyboy010101
, …
Karl Schuneman
13
Jan 14
Better Power Supply for Rack PiDP-1
So I did some digging, and the NEW Raspberry Pi power supply (SC1731) is 46W. It delivers 5A at 5V,
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Better Power Supply for Rack PiDP-1
So I did some digging, and the NEW Raspberry Pi power supply (SC1731) is 46W. It delivers 5A at 5V,
Jan 14
briandenley
Jan 13
Switch code at first test
SB: 777777 777777 776000 000000 IS: 577777 777777 176000 000000 Switches all respond Any ideas?
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Switch code at first test
SB: 777777 777777 776000 000000 IS: 577777 777777 176000 000000 Switches all respond Any ideas?
Jan 13
Unibus
Jan 13
I've Done All The Dumb Things - Mnemonic and Machine Code Reference Lists Expanded, plus System Configurations and Options
Hi, I have to write a planning submission for my local Council and that is going to take a couple of
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I've Done All The Dumb Things - Mnemonic and Machine Code Reference Lists Expanded, plus System Configurations and Options
Hi, I have to write a planning submission for my local Council and that is going to take a couple of
Jan 13
Kevin Murrell
, …
sunnyboy010101
5
Jan 11
Serial No 282 (Rack) Completed!
I don't have easily accessible wall space to hang mine, so came up with the idea of using one of
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Serial No 282 (Rack) Completed!
I don't have easily accessible wall space to hang mine, so came up with the idea of using one of
Jan 11
The Oracle
, …
Bill E
5
Jan 11
PiDP-1 Best audio fix
On Sunday, January 11, 2026 at 7:43:33 AM UTC-5 maklumatp...@gmail.com wrote: We could also generate
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PiDP-1 Best audio fix
On Sunday, January 11, 2026 at 7:43:33 AM UTC-5 maklumatp...@gmail.com wrote: We could also generate
Jan 11
Bill E
, …
Matthias Barthel
16
Jan 11
Is there a file system forr the PDP-1? Why, yes, there is (or will be)...
Bill, I think it doesn't matter which watch you install, because apparently everyone has 🙃 used
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Is there a file system forr the PDP-1? Why, yes, there is (or will be)...
Bill, I think it doesn't matter which watch you install, because apparently everyone has 🙃 used
Jan 11
sunnyboy010101
7
Jan 10
PiDP-1 S/N: 089 nearing completion
Whoops! It helps to attach the photo!! On Saturday, January 10, 2026 at 4:24:53 PM UTC-8
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PiDP-1 S/N: 089 nearing completion
Whoops! It helps to attach the photo!! On Saturday, January 10, 2026 at 4:24:53 PM UTC-8
Jan 10
Bill E
, …
The Oracle
17
Jan 10
Real PDP-1 switches closeup
I'm still testing what looks the best right now, I'm at 120% or .80" of the original .
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Real PDP-1 switches closeup
I'm still testing what looks the best right now, I'm at 120% or .80" of the original .
Jan 10
Kevin McGrath
, …
Unibus
8
Jan 9
Where to get power for 7" display?
Hi, A dump on Type 32 and 370 Light Pens Regards, Garry Type 30 Precision CRT Display System #20 (30-
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Where to get power for 7" display?
Hi, A dump on Type 32 and 370 Light Pens Regards, Garry Type 30 Precision CRT Display System #20 (30-
Jan 9
briandenley
,
Michael Cheponis
2
Jan 9
Power up LED row. But running the test program those LEDs go out and the test program runs fine. I didnt expect this. Any ideas?
This symptom, where the extension is 14 and the Memory Address is 7747 is exactly what I saw when
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Power up LED row. But running the test program those LEDs go out and the test program runs fine. I didnt expect this. Any ideas?
This symptom, where the extension is 14 and the Memory Address is 7747 is exactly what I saw when
Jan 9
John Stout
4
Jan 9
PDP1 LISP
After a morning's work taking the rack apart, resulting and, in one case, replacing a switch,
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PDP1 LISP
After a morning's work taking the rack apart, resulting and, in one case, replacing a switch,
Jan 9
Randy Merkel
, …
sunnyboy010101
16
Jan 9
Work on #149 (console version) begins!
It's alive! Thanks to everyone for your help!
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Work on #149 (console version) begins!
It's alive! Thanks to everyone for your help!
Jan 9
sunnyboy010101
,
Malcolm Ray
3
Jan 7
Rack Version I/O Panel test?
You were correct. I just didn't wait long enough the first time. Works great! -R On Wednesday,
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Rack Version I/O Panel test?
You were correct. I just didn't wait long enough the first time. Works great! -R On Wednesday,
Jan 7
Brian Jamieson
,
AB
2
Jan 7
Look who's just arrived in the Falklands
wow.. interestingly I was reading about the Falklands yesterday.. :-) On Wednesday, January 7, 2026
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Look who's just arrived in the Falklands
wow.. interestingly I was reading about the Falklands yesterday.. :-) On Wednesday, January 7, 2026
Jan 7
sunnyboy010101
, …
Bill E
4
Jan 6
Music / Sound (rack version)
Thanks all for the suggestions. Once my new power supply arrives and I figure out how I want to mount
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Music / Sound (rack version)
Thanks all for the suggestions. Once my new power supply arrives and I figure out how I want to mount
Jan 6
Bill E
,
R Clark
2
Jan 5
New switches
Your welcome. You should have posted this back in the original thread to keep all in one place ;) :)
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New switches
Your welcome. You should have posted this back in the original thread to keep all in one place ;) :)
Jan 5
Bill E
Jan 5
Fixed pong src checked in
Back a ways, it was determined that the source for pong that's in the main distro in tapes/source
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Fixed pong src checked in
Back a ways, it was determined that the source for pong that's in the main distro in tapes/source
Jan 5
Matthias Barthel
, …
Unibus
5
Jan 5
Questions to the Sequence Break System (TYPE120)
Hi, I've never used MACRO but for asc Channel 0 will it accept:- iot 0051 Regards, Garry On Mon,
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Questions to the Sequence Break System (TYPE120)
Hi, I've never used MACRO but for asc Channel 0 will it accept:- iot 0051 Regards, Garry On Mon,
Jan 5
Bill E
,
Matthias Barthel
3
Jan 4
Utility for reading documentation tape images added
Only if you want to read in one long scrolling line. Mine is specifically for doc tapes, you get
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Utility for reading documentation tape images added
Only if you want to read in one long scrolling line. Mine is specifically for doc tapes, you get
Jan 4
Bill E
Jan 4
Yet more am1 updates
Tables added, equivalent to macro dimension pseudo, but with optional initializer.
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Yet more am1 updates
Tables added, equivalent to macro dimension pseudo, but with optional initializer.
Jan 4
Angelo Papenhoff/aap
,
Matthias Barthel
3
Jan 4
Anyone at 39C3?
Alright, sorry for the recent silence again. The congress was fun but chaotic, and now it's
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Anyone at 39C3?
Alright, sorry for the recent silence again. The congress was fun but chaotic, and now it's
Jan 4
briandenley
,
Matthias Barthel
2
Jan 4
Control syntax help
Brian, Its just simple: Load a Papertape (Webapps, Connect your Display with the button, browse to
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Control syntax help
Brian, Its just simple: Load a Papertape (Webapps, Connect your Display with the button, browse to
Jan 4
MICHAEL GARDI
,
R Clark
3
Jan 3
Mounting the Console Back Top and Bottom Panels
Should add, they also make 180, 90 (up/down) degree adapters for HDMI as well. On Saturday, January 3
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Mounting the Console Back Top and Bottom Panels
Should add, they also make 180, 90 (up/down) degree adapters for HDMI as well. On Saturday, January 3
Jan 3
DR
, …
Clem Cole
9
Jan 3
A slight off topic question, but I hope it is OK
In the spirit of the message, I recommend looking at one of my favorite Ken Thompson papers from the
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A slight off topic question, but I hope it is OK
In the spirit of the message, I recommend looking at one of my favorite Ken Thompson papers from the
Jan 3
Michael Cheponis
,
Bill E
3
Jan 3
improper lights behavior
I looked at the emulator code. It does what seems to me to be a strange thing, it updates the lights
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improper lights behavior
I looked at the emulator code. It does what seems to me to be a strange thing, it updates the lights
Jan 3
Bill E
,
Glenn Babecki
4
Jan 3
jfd instruction
See https://groups.google.com/g/pidp-1/c/pZl2zyVhi2g/m/Ab6TjCoiBQAJ On further research, I think
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jfd instruction
See https://groups.google.com/g/pidp-1/c/pZl2zyVhi2g/m/Ab6TjCoiBQAJ On further research, I think
Jan 3
MICHAEL GARDI
, …
Ian Schofield
10
Jan 3
I have finished my 2:3 Scale Type 30 Reproduction
Hi All, This is definitely a great idea. See link for video of the display that could be included.
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I have finished my 2:3 Scale Type 30 Reproduction
Hi All, This is definitely a great idea. See link for video of the display that could be included.
Jan 3
Michael Cheponis
, …
AB
8
Jan 2
Re: [PiDP-1] Digest for pidp-1@googlegroups.com - 25 updates in 7 topics
" Yet despite that, IBM exists and DEC doesn't today " ... yup, that's the reality
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Re: [PiDP-1] Digest for pidp-1@googlegroups.com - 25 updates in 7 topics
" Yet despite that, IBM exists and DEC doesn't today " ... yup, that's the reality
Jan 2
Unibus
,
Bill E
2
Jan 2
I've Done All The Dumb Things - Mnemonic and Machine Code Reference List
That is a great reference work! There seems to be a number of reasons for all the apparent randomness
unread,
I've Done All The Dumb Things - Mnemonic and Machine Code Reference List
That is a great reference work! There seems to be a number of reasons for all the apparent randomness
Jan 2