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PiDP-10

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Manual regularly updated, download at https://obsolescence.dev/pidp10-sw/PiDP-10_Manual.pdf . And run 'git pull' in your /opt/pidp10 directory for any sw updates!

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Feb 10

Color scope window not appearing on booting into ITS

Cancel red alert ... (ST:NG fans ...) The problem turned out to be that I was editing boot.pi in the

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Color scope window not appearing on booting into ITS

Cancel red alert ... (ST:NG fans ...) The problem turned out to be that I was editing boot.pi in the

Feb 10

DR, … Eric Brown28

Feb 9

Now I have no BlinkenLitz

Something like a Unibone in reverse? Sent from my iPhone On Feb 8, 2026, at 6:00 PM, terri-...@glaver

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Now I have no BlinkenLitz

Something like a Unibone in reverse? Sent from my iPhone On Feb 8, 2026, at 6:00 PM, terri-...@glaver

Feb 9

Layton Graye, … Malcolm Ray14

Feb 4

Working PiDP-10 not loading TOPS-10, or ITS

Able to load TOPS-10, and ITS. Now ...to figure out how to get something out of those systems. Time

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Working PiDP-10 not loading TOPS-10, or ITS

Able to load TOPS-10, and ITS. Now ...to figure out how to get something out of those systems. Time

Feb 4

R Clark, … James Cloos20

Feb 1

TYPE 340 round display question

>>>>> "RC" == R Clark <rbclar...@gmail.com> writes: RC> It was

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TYPE 340 round display question

>>>>> "RC" == R Clark <rbclar...@gmail.com> writes: RC> It was

Feb 1

Francis King, Lars Brinkhoff3

Jan 31

Type 340 display problems

Hello Lars, Thank you for your comments. I agree that .DSTART would be more efficient. I'll try

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Type 340 display problems

Hello Lars, Thank you for your comments. I agree that .DSTART would be more efficient. I'll try

Jan 31

Lars Brinkhoff, … Lawrence Fisher20

Jan 30

Join me, together we can rule the ARPANET

Is anyone interested in having TOPS-20 on the network? I looked around, and the chance of success

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Join me, together we can rule the ARPANET

Is anyone interested in having TOPS-20 on the network? I looked around, and the chance of success

Jan 30

Harry Saal, Layton Graye4

Jan 29

newly assembled PiDP-10 behaves as "headless": no blinky lights

If am running the Raspberry PI, and don't get blinky lights automatically. I have to run the test

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newly assembled PiDP-10 behaves as "headless": no blinky lights

If am running the Raspberry PI, and don't get blinky lights automatically. I have to run the test

Jan 29

Jan 24

noisy teletype no longer holding after recent re-install

Hi all, The microSD on my Raspi-5 began failing yesterday. I was able to use the Raspi SD card copier

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noisy teletype no longer holding after recent re-install

Hi all, The microSD on my Raspi-5 began failing yesterday. I was able to use the Raspi SD card copier

Jan 24

Jan 23

Display on a Type 340 display - Eureka!

I have written an assembler for the Type 340 display. It runs within MS Excel, and turns a sequence

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Display on a Type 340 display - Eureka!

I have written an assembler for the Type 340 display. It runs within MS Excel, and turns a sequence

Jan 23

Carl Marbach, … oscarv36

12/31/25

minimum software

Yes - I pulled in all Richard's improvements. Next step, in January, will be to have a working

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minimum software

Yes - I pulled in all Richard's improvements. Next step, in January, will be to have a working

12/31/25

Capnrob97, … Lars Brinkhoff9

12/30/25

Question about possibility of host pi sending messages to the ITS teletype Model 33

I got the python script going to download the ABC News top stories RSS feed. The bottom teletype is

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Question about possibility of host pi sending messages to the ITS teletype Model 33

I got the python script going to download the ABC News top stories RSS feed. The bottom teletype is

12/30/25

12/20/25

IMPORTANT: software update for Pi OS Trixie

So the new Pi OS 'Trixie' version came out, and it broke the PiDP-10. It should be fixed now

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IMPORTANT: software update for Pi OS Trixie

So the new Pi OS 'Trixie' version came out, and it broke the PiDP-10. It should be fixed now

12/20/25

Francis King, … Lars Brinkhoff23

12/19/25

Graphics programming on the PiDP-10

Francis King wrote: > Replacing LOOP: JUMPA LOOP with LOOP: JFCL .HANG, but this uses just as much

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Graphics programming on the PiDP-10

Francis King wrote: > Replacing LOOP: JUMPA LOOP with LOOP: JFCL .HANG, but this uses just as much

12/19/25

Charley Jones, … Lars Brinkhoff15

12/11/25

SHRDLU Source Code?

Eric wrote: I wish we had source to TWDEMO, but we don't. * disassembling sounds intensifies * In

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SHRDLU Source Code?

Eric wrote: I wish we had source to TWDEMO, but we don't. * disassembling sounds intensifies * In

12/11/25

John Francini, … Lars Brinkhoff3

12/11/25

Happy DEC-10 day!

John Francini wrote: Just reviving a tradition that used to happen on Usenet and mailing lists. Happy

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Happy DEC-10 day!

John Francini wrote: Just reviving a tradition that used to happen on Usenet and mailing lists. Happy

12/11/25

DR, … Michael J. Kupec16

12/5/25

Setup SD card to start anew with Pi5 running a -10

I concur with using Angry IP Scanner! Works great for finding IP of any new headless system I'm

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Setup SD card to start anew with Pi5 running a -10

I concur with using Angry IP Scanner! Works great for finding IP of any new headless system I'm

12/5/25

Francis King, … Eric Swenson15

11/23/25

sorry for the weird rendering of the esc characters there. ESCj is $J and ESCl is $L, where $ is alt

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sorry for the weird rendering of the esc characters there. ESCj is $J and ESCl is $L, where $ is alt

11/23/25

11/19/25

Decwar event at UTAustin November 20

Alrighty all you starship commanders - tomorrow is the event - jump on in and let's have some fun

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Decwar event at UTAustin November 20

Alrighty all you starship commanders - tomorrow is the event - jump on in and let's have some fun

11/19/25

stephan küppers, … terri-...@glaver.org7

11/8/25

Installing linux-x64/amd64 and pidp-10 on an amd64-laptop

Given that the PiDP software is using an older version of SIMH with Blinkenbone mods the '

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Installing linux-x64/amd64 and pidp-10 on an amd64-laptop

Given that the PiDP software is using an older version of SIMH with Blinkenbone mods the '

11/8/25

Andrew Barron, … H. Fisher72

11/2/25

New book about the PiDP-10 including ITS, TOPS-10 and TOPS-20

Does anybody in the US have a copy of the book they'd sell for a reasonable price? I emailed

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New book about the PiDP-10 including ITS, TOPS-10 and TOPS-20

Does anybody in the US have a copy of the book they'd sell for a reasonable price? I emailed

11/2/25

Francis King, … Eric Swenson8

11/2/25

ITS Midas system calls

The .open UUO doesn't allow specification of the SNAME; the .CALL OPEN system call does. The

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ITS Midas system calls

The .open UUO doesn't allow specification of the SNAME; the .CALL OPEN system call does. The

11/2/25

11/1/25

VNC for PiDP system console only?

After quite a few false starts, I managed to get an old Kindle running as a mirror of my current

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VNC for PiDP system console only?

After quite a few false starts, I managed to get an old Kindle running as a mirror of my current

11/1/25

10/30/25

I saw this on Reddit r/emacs. It might be of interest. History of Emacs on the PDP-10 F.

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I saw this on Reddit r/emacs. It might be of interest. History of Emacs on the PDP-10 F.

10/30/25

Francis King, … Ric Werme10

10/23/25

Thank you everyone for your input, which has gone into the PowerPoint deck. On Wednesday, October 22,

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Thank you everyone for your input, which has gone into the PowerPoint deck. On Wednesday, October 22,

10/23/25

Teri Bertram, … David Todd12

10/22/25

remote telnet into TOPS-20

On Thursday, July 31, 2025 at 8:26:43 PM UTC-4 Andrew Barron wrote: @TELNET TELNET>203.38.121.133

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remote telnet into TOPS-20

On Thursday, July 31, 2025 at 8:26:43 PM UTC-4 Andrew Barron wrote: @TELNET TELNET>203.38.121.133

10/22/25

Liam Proven, … Darryll Truchan5

10/17/25

There is an error with libpcre. Seems libpcre3 is gone and the emulator depends on it. I followed the

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There is an error with libpcre. Seems libpcre3 is gone and the emulator depends on it. I followed the

10/17/25

Ric Werme, … terri-...@glaver.org11

10/15/25

Kermit and TOPS-10: to Linux works, to TOPS-10 doesn't

Well, I finally had time to make a start at building Kermit on 6.03. I didn't get very far: .copy

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Kermit and TOPS-10: to Linux works, to TOPS-10 doesn't

Well, I finally had time to make a start at building Kermit on 6.03. I didn't get very far: .copy

10/15/25

Richard McDonald

10/9/25

Naked pdp10 on WSL2 Ubuntu 24

I successfully installed pdp10 on a PI5 connected to Oscar's front panel. Looks good and works

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Naked pdp10 on WSL2 Ubuntu 24

I successfully installed pdp10 on a PI5 connected to Oscar's front panel. Looks good and works

10/9/25

Eric Swenson, Tim Radde5

10/8/25

TOPS-10 issue with new user

REACT is documented here: http://www.bitsavers.org/pdf/dec/pdp10/TOPS10_softwareNotebooks/vol15/AA-

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TOPS-10 issue with new user

REACT is documented here: http://www.bitsavers.org/pdf/dec/pdp10/TOPS10_softwareNotebooks/vol15/AA-

10/8/25

Curtis Vaughan (ACSS)

10/6/25

RPDP install on Arch

If anyone's using an Arch based system, you can edit the rpdp_install script by changing the

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RPDP install on Arch

If anyone's using an Arch based system, you can edit the rpdp_install script by changing the

10/6/25

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