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Discussion group for the PiDP-11.
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Robert S
, …
Nick M
9
12:26 AM
Reversed rotary encoder action
cd /opt/pidp11/src ./makeserver.sh ./makeclient.sh Wow that's much simpler than what I've
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Reversed rotary encoder action
cd /opt/pidp11/src ./makeserver.sh ./makeclient.sh Wow that's much simpler than what I've
12:26 AM
terri-...@glaver.org
, …
Ggrinton
13
Dec 28
Test version of a new PiDP-11 installation script
On Sunday, December 28, 2025 at 5:16:25 AM UTC-5 Ggrinton wrote: Thanks again. Nice! I know we
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Test version of a new PiDP-11 installation script
On Sunday, December 28, 2025 at 5:16:25 AM UTC-5 Ggrinton wrote: Thanks again. Nice! I know we
Dec 28
Bob Darlington
Dec 28
Re: [PiDP-11] My PiDP :)
Looks great, Nick! I 3D printed an extension for the back of mine. That let me fit in all the cables
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Re: [PiDP-11] My PiDP :)
Looks great, Nick! I 3D printed an extension for the back of mine. That let me fit in all the cables
Dec 28
Neil Higgins
, …
Anton L.
569
Dec 28
Show us your kits - completed PiDP-11s
> https://github.com/thieleke/pidp11/blob/master/bin/test.py It looks like a newer version of that
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Show us your kits - completed PiDP-11s
> https://github.com/thieleke/pidp11/blob/master/bin/test.py It looks like a newer version of that
Dec 28
John Brezak
, …
Johnny Billquist
10
Dec 27
RSX11M STB files
Sure. I wrote SYM. :-) You can find the source at MIM::DU:[CUSPS], which you also can see if you do
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RSX11M STB files
Sure. I wrote SYM. :-) You can find the source at MIM::DU:[CUSPS], which you also can see if you do
Dec 27
Andrew Barron
, …
Johnny Billquist
16
Dec 26
Empire game
Thanks Johnny, I have the game working thanks to yourself and Anton. The game play is quite complex
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Empire game
Thanks Johnny, I have the game working thanks to yourself and Anton. The game play is quite complex
Dec 26
Eric Bruno
, …
Anton Lavrentiev
7
Dec 26
RSX11M Plus 4.6 Issue using [3,54]timwrt in [1,2]shutup.cmd
> is why that thing at all? Well, I for once am not using any RSX11 networking. My PiDP is on WiFi
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RSX11M Plus 4.6 Issue using [3,54]timwrt in [1,2]shutup.cmd
> is why that thing at all? Well, I for once am not using any RSX11 networking. My PiDP is on WiFi
Dec 26
Nick M
, …
Johnny Billquist
14
Dec 26
Virtual Device Bus Project
On 2025-12-26 17:10, Anton Lavrentiev wrote: > > So you just have to accept that your device
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Virtual Device Bus Project
On 2025-12-26 17:10, Anton Lavrentiev wrote: > > So you just have to accept that your device
Dec 26
Michael Katzmann
, …
Johnny Billquist
34
Dec 23
Files released today!
Don't know about Cisco, but a little surprised. Since they otherwise were very much TOPS-20
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Files released today!
Don't know about Cisco, but a little surprised. Since they otherwise were very much TOPS-20
Dec 23
Phillip Porch, MD
Dec 16
Re: [PiDP-11] Building rack version question on operator panel
No divot on mine. Phillip Porch, MD, FACS On Dec 16, 2025, at 2:21 PM, sunnybo...@gmail.com <
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Re: [PiDP-11] Building rack version question on operator panel
No divot on mine. Phillip Porch, MD, FACS On Dec 16, 2025, at 2:21 PM, sunnybo...@gmail.com <
Dec 16
Andrew Barron
, …
Johnny Billquist
12
Dec 15
Cobol-81 on RSX11m+
I trimmed it down and it still works. IDENTIFICATION DIVISION. PROGRAM-ID. CHELLO. ENVIRONMENT
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Cobol-81 on RSX11m+
I trimmed it down and it still works. IDENTIFICATION DIVISION. PROGRAM-ID. CHELLO. ENVIRONMENT
Dec 15
terri-...@glaver.org
, …
Johnny Billquist
27
Dec 15
Potential changes in PiDP-11 / simh / console interaction plus other features - your vote counts!
On 2025-12-15 05:56, Jonathan Harston wrote: > > > softjar.se wrote: > > Unless
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Potential changes in PiDP-11 / simh / console interaction plus other features - your vote counts!
On 2025-12-15 05:56, Jonathan Harston wrote: > > > softjar.se wrote: > > Unless
Dec 15
Eric N
, …
R Clark
51
Dec 11
Fixing the LED panel freeze issue
Understood. I am using your code, I 'think', as you helped me with it in previous posts in
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Fixing the LED panel freeze issue
Understood. I am using your code, I 'think', as you helped me with it in previous posts in
Dec 11
Thomas Niccum
, …
Bert Driehuis
7
Dec 7
University of Utah team discovers rare computer relic
Be careful about your selection of tape drives, as speed is not your only concern. The first computer
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University of Utah team discovers rare computer relic
Be careful about your selection of tape drives, as speed is not your only concern. The first computer
Dec 7
Gregory Carlson
,
Charley Jones
2
Dec 5
SN 226 arrived in great condition
Congratulations, started the PDP-1 Sent from my iPhone 15pm! Charley Jones, PMP > On Dec 5, 2025,
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SN 226 arrived in great condition
Congratulations, started the PDP-1 Sent from my iPhone 15pm! Charley Jones, PMP > On Dec 5, 2025,
Dec 5
Curtis Smith (史國興)
,
Bert Driehuis
2
Nov 24
PiDP-11 Key slipps
I would use a serrated lock ring. Make sure you get one designed for light applications, in other
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PiDP-11 Key slipps
I would use a serrated lock ring. Make sure you get one designed for light applications, in other
Nov 24
Bill Silver
,
John Hudak
2
Nov 20
PDP-11: The Second Most Influential Computer Architecture of All Time
Thank you for posting this - It is, for me, very 'refreshing' reading in the sense that all
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PDP-11: The Second Most Influential Computer Architecture of All Time
Thank you for posting this - It is, for me, very 'refreshing' reading in the sense that all
Nov 20
Ggrinton
,
Johnny Billquist
5
Nov 19
Problem running RPM
Thanks Johnny. That has resolved the issue. RPM running fine now. Geoffrey
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Problem running RPM
Thanks Johnny. That has resolved the issue. RPM running fine now. Geoffrey
Nov 19
Pavel Tsybulin
, …
Anton Lavrentiev
6
Nov 17
PDP-11 terminal monitor color
I use PuTTY with Glass VT220 font and the amber color RGB=(255160, 0). (which is #FFA000, as IMO
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PDP-11 terminal monitor color
I use PuTTY with Glass VT220 font and the amber color RGB=(255160, 0). (which is #FFA000, as IMO
Nov 17
Pavel Tsybulin
, …
terri-...@glaver.org
17
Nov 3
RT-11 Paginated output to the terminal
On Sunday, November 2, 2025 at 10:33:05 AM UTC-5 b...@softjar.se wrote: However, times have moved on.
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RT-11 Paginated output to the terminal
On Sunday, November 2, 2025 at 10:33:05 AM UTC-5 b...@softjar.se wrote: However, times have moved on.
Nov 3
David Rosengrant
, …
timr...@gmail.com
3
Nov 3
PiDP's
Well done. It is fun to play with this stuff we used for work or school back in the day. Although I
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PiDP's
Well done. It is fun to play with this stuff we used for work or school back in the day. Although I
Nov 3
Jeff Spears
,
Glenn Babecki
2
Nov 2
Henk Gooijen rk05 disk drive (usb) and rack
I can't speak for Henk's and Oscar's current status on the RK05 project, but my
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Henk Gooijen rk05 disk drive (usb) and rack
I can't speak for Henk's and Oscar's current status on the RK05 project, but my
Nov 2
Folkert van Heusden
,
terri-...@glaver.org
3
Nov 2
2nd hand PiDP-11
Good points! It is an assembled device. No Pi included and the area is Netherlands (South-Holland,
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2nd hand PiDP-11
Good points! It is an assembled device. No Pi included and the area is Netherlands (South-Holland,
Nov 2
Alberto Calò
, …
Adam Thornton
26
Oct 26
RT11 - Create / edit a new .rl2 disk for storing files
Thank you! Assembling and linking the device driver was exactly what I needed to do. Adam
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RT11 - Create / edit a new .rl2 disk for storing files
Thank you! Assembling and linking the device driver was exactly what I needed to do. Adam
Oct 26
Pete Hartman
, …
terri-...@glaver.org
11
Oct 18
Troubleshooting a new build
On Saturday, October 18, 2025 at 1:31:34 PM UTC-4 alchy...@gmail.com wrote: Just picked this
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Troubleshooting a new build
On Saturday, October 18, 2025 at 1:31:34 PM UTC-4 alchy...@gmail.com wrote: Just picked this
Oct 18
Paulo Rebordão
, …
frankg
30
Oct 9
Looking for a DCJ11-AE CPU
As an alternative to a full panel it is possible to have blinken lights. The retrocmp site sells two
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Looking for a DCJ11-AE CPU
As an alternative to a full panel it is possible to have blinken lights. The retrocmp site sells two
Oct 9
Bert Driehuis
, …
terri-...@glaver.org
3
Oct 9
Re: [PiDP-11] Inconsistant LED color
Oddly, I don't see the original post that was quoted here. Anyway... The red of my PiDP-11s seems
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Re: [PiDP-11] Inconsistant LED color
Oddly, I don't see the original post that was quoted here. Anyway... The red of my PiDP-11s seems
Oct 9
Johnny Billquist
,
Trevor Heartfield
6
Oct 7
Announcing TCP/IP V2.18 for RSX-11M-PLUS
Hi Johnny, I restored to my backup and tried again this morning but the problem still exists. Kind
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Announcing TCP/IP V2.18 for RSX-11M-PLUS
Hi Johnny, I restored to my backup and tried again this morning but the problem still exists. Kind
Oct 7
DR
, …
terri-...@glaver.org
36
Oct 4
Oscar, a thought for your next project for us
Oscar: I have attached a picture of one of the coveted IBM switches from the era of high-design and
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Oscar, a thought for your next project for us
Oscar: I have attached a picture of one of the coveted IBM switches from the era of high-design and
Oct 4
Henri Ducrocq
Oct 4
A controller written in Go
https://github.com/perpen/blink11 I wrote this a few years ago, and I've been wanting to create a
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A controller written in Go
https://github.com/perpen/blink11 I wrote this a few years ago, and I've been wanting to create a
Oct 4