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The PDP-12 Restoration Project mailing list now exists only for posterity. We have moved our public conversations to the VCF forums here: PDP-12 #435 at the University of Minnesota Duluth | Vintage Computer Federation Forums

This list was for people who are involved with or interested in our project to bring PDP-12 #435 to UMD, restore it to operational use, and use it for demonstrations and education in Computer Science and Electrical Engineering.

Archives are public; subscription is CLOSED. If we return to using this list, we'll repoen it.

If you have any questions about this list, please contact pahp@d.umn.edu.

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3/13/23

officially moving to VCF -- mailing list deprecated

Hi all, Our move to VCF for public conversations has been successful. As most of you know, we now

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officially moving to VCF -- mailing list deprecated

Hi all, Our move to VCF for public conversations has been successful. As most of you know, we now

3/13/23

Peter Peterson, Vincent Slyngstad5

9/17/22

modern os8diskserver for pdp-12

Cool! I'm out of town until next week, but I'll try to answer any questions I can then. Vince

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modern os8diskserver for pdp-12

Cool! I'm out of town until next week, but I'll try to answer any questions I can then. Vince

9/17/22

5/17/22

RIM loader as piano music

I decided to perform the RIM loader as a piece of modern music in C major: https://twitter.com/

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RIM loader as piano music

I decided to perform the RIM loader as a piece of modern music in C major: https://twitter.com/

5/17/22

Michael Thompson, … Peter Peterson17

4/28/22

Hi all, Julian pointed me to our archive of tapes. Vince, I'll zip them up and email them to you

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Hi all, Julian pointed me to our archive of tapes. Vince, I'll zip them up and email them to you

4/28/22

Nick Moffitt, … Peter Peterson10

4/27/22

P-machine source for PDP8/12?

Hi all, Anything we can do to help you on your quest, Nick, let us know! Peter On Mon, Mar 28, 2022

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P-machine source for PDP8/12?

Hi all, Anything we can do to help you on your quest, Nick, let us know! Peter On Mon, Mar 28, 2022

4/27/22

Peter Peterson, … Maury Pepper5

4/13/22

vcf vs this list

The thing that bothered me was that replies seemed to accumulate individual addresses along with the

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vcf vs this list

The thing that bothered me was that replies seemed to accumulate individual addresses along with the

4/13/22

Peter Peterson, … Vincent Slyngstad19

3/27/22

getting source files to an environment to compile / execute

Hi Vince, We haven't updated our serialdisk nor have we upgraded our approach for moving files.

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getting source files to an environment to compile / execute

Hi Vince, We haven't updated our serialdisk nor have we upgraded our approach for moving files.

3/27/22

Julian Nowaczek, … Vincent Slyngstad5

3/27/22

PDP-12/8I Memory Emulation

I'm interested in these, or something like them, for my PDP-12. Thanks, Vince On Tuesday, March

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PDP-12/8I Memory Emulation

I'm interested in these, or something like them, for my PDP-12. Thanks, Vince On Tuesday, March

3/27/22

Peter Peterson, Michael Thompson5

3/21/22

failure for M217A test on all three of our cards -- does the test work?

Hi Mike, We ran the updated M169 test and it works! Thanks. About the pull-up resistors... the test

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failure for M217A test on all three of our cards -- does the test work?

Hi Mike, We ran the updated M169 test and it works! Thanks. About the pull-up resistors... the test

3/21/22

12/14/21

flip chip tester -- current USB version?

Hi all, I hope everyone is well and has made it through the last couple years -- we have been at home

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flip chip tester -- current USB version?

Hi all, I hope everyone is well and has made it through the last couple years -- we have been at home

12/14/21

Jack Rubin, Michael Thompson3

5/18/20

VHDL references

All of my FPGA work so far has been with MicroSemi SmartFusion devices. I did everything using

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VHDL references

All of my FPGA work so far has been with MicroSemi SmartFusion devices. I did everything using

5/18/20

Peter Peterson, … CLASystems7

8/24/19

emulated 24K core unit for the PDP-12

This thread is moving too quickly for properly interspersed comments from my point of view, so I will

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emulated 24K core unit for the PDP-12

This thread is moving too quickly for properly interspersed comments from my point of view, so I will

8/24/19

Jack Rubin, … CLASystems4

8/24/19

Another historical question

Remember I came into this in the "straight" PDP-8 era with the extremely important guidance

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Another historical question

Remember I came into this in the "straight" PDP-8 era with the extremely important guidance

8/24/19

Dawson Rosell, … CLASystems4

7/8/19

I'm surprised this was recovered. For years, I heard the source code was lost. A random sampling

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I'm surprised this was recovered. For years, I heard the source code was lost. A random sampling

7/8/19

Peter Peterson, … CLASystems5

6/17/19

why PDP-12 after PDP-11

And as I posted earlier, it was to be the LINC-8/I. On Mon, Jun 17, 2019, 2:17 PM CLASystems <

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why PDP-12 after PDP-11

And as I posted earlier, it was to be the LINC-8/I. On Mon, Jun 17, 2019, 2:17 PM CLASystems <

6/17/19

Peter Peterson, … CLASystems9

6/15/19

failing the tape data test after passing Tape Control I & II

Any modern low-voltage ohmmeter can be used to prove continuity between say a contact on a gold pin

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failing the tape data test after passing Tape Control I & II

Any modern low-voltage ohmmeter can be used to prove continuity between say a contact on a gold pin

6/15/19

Dawson Rosell, … Peter Peterson46

5/15/19

Compiling Fortran on the PDP-12

Hi all, We are hoping to do a Spacewar tournament this coming school year, so we'd love to get

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Compiling Fortran on the PDP-12

Hi all, We are hoping to do a Spacewar tournament this coming school year, so we'd love to get

5/15/19

Peter Peterson, clasystems2

5/14/19

Creating a Bootable OS8 Tape on the PDP-12

Just to update anyone who is not completely up to date. 1) I modified what Bob Adamson modified so

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Creating a Bootable OS8 Tape on the PDP-12

Just to update anyone who is not completely up to date. 1) I modified what Bob Adamson modified so

5/14/19

3/22/18

Why Johnny Can't Compile Fortran with Subroutines

Hi all, We had two problems: 1. We couldn't compile Fortran IV code with subroutines. 2. We

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Why Johnny Can't Compile Fortran with Subroutines

Hi all, We had two problems: 1. We couldn't compile Fortran IV code with subroutines. 2. We

3/22/18

clasystems, … Dawson Rosell6

2/22/18

Small collection of files for you.

On Thu, Feb 22, 2018 at 9:57 PM, Dawson Rosell <rose...@d.umn.edu> wrote: Hi all! I had a

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Small collection of files for you.

On Thu, Feb 22, 2018 at 9:57 PM, Dawson Rosell <rose...@d.umn.edu> wrote: Hi all! I had a

2/22/18

CLASystems, Dawson Rosell3

1/26/18

Fwd: OS/8 corrected files

On Fri, Jan 26, 2018 at 1:24 PM, Dawson Rosell <rose...@d.umn.edu> wrote: Thanks! I'll

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Fwd: OS/8 corrected files

On Fri, Jan 26, 2018 at 1:24 PM, Dawson Rosell <rose...@d.umn.edu> wrote: Thanks! I'll

1/26/18

Dawson Rosell, … CLASystems14

12/1/17

Whetstones and Fortran

I don't recall exactly (haven't had a chance to check), but I believe its the KW12A. I'm

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Whetstones and Fortran

I don't recall exactly (haven't had a chance to check), but I believe its the KW12A. I'm

12/1/17

Dawson Rosell, … Peter Peterson4

11/6/17

Fortran and SIMH

Thank you! On Mon, Nov 6, 2017 at 1:45 PM, Dawson Rosell <rose...@d.umn.edu> wrote: Thanks!

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Fortran and SIMH

Thank you! On Mon, Nov 6, 2017 at 1:45 PM, Dawson Rosell <rose...@d.umn.edu> wrote: Thanks!

11/6/17

Michael Thompson

9/9/17

I am at the VCF. Where is everyone?

Sent from my iPhone

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I am at the VCF. Where is everyone?

Sent from my iPhone

9/9/17

Dawson Rosell, … Michael Thompson23

8/27/17

converting text to ptp

I found some example FORTRAN-IV programs on pdp-8.net and gave them a try on SIMH. They worked OK. I

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converting text to ptp

I found some example FORTRAN-IV programs on pdp-8.net and gave them a try on SIMH. They worked OK. I

8/27/17

Peter Peterson2

8/16/17

tribute to Warren

Oops, I forgot to add a link to the post: http://umdpdp12.blogspot.com/2017/08/warren-russel-stearns.

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tribute to Warren

Oops, I forgot to add a link to the post: http://umdpdp12.blogspot.com/2017/08/warren-russel-stearns.

8/16/17

Peter Peterson, CLASystems3

8/16/17

DNT article from today

I just wanted to update that Brooks at the DNT fixed up a few details that were wrong. On Saturday,

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DNT article from today

I just wanted to update that Brooks at the DNT fixed up a few details that were wrong. On Saturday,

8/16/17

Peter Peterson, … CLASystems3

8/11/17

Duluth News Tribune video from today

Which "spacewar" is the one in the article. I ask because it is clearly not POLY SPACEWAR [

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Duluth News Tribune video from today

Which "spacewar" is the one in the article. I ask because it is clearly not POLY SPACEWAR [

8/11/17

Michael Thompson, … CLASystems6

8/11/17

The Fortran IV run-time system doesn't really use the EAE when simulating the FPP-12/FPP-8/A

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The Fortran IV run-time system doesn't really use the EAE when simulating the FPP-12/FPP-8/A

8/11/17

Peter Peterson, … CLASystems12

8/10/17

kaleidoscope source / executable in loadable format?

On Thu, Aug 10, 2017 at 1:58 PM, Peter Peterson <pa...@d.umn.edu> wrote: Ah ha! Are there DIAL

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kaleidoscope source / executable in loadable format?

On Thu, Aug 10, 2017 at 1:58 PM, Peter Peterson <pa...@d.umn.edu> wrote: Ah ha! Are there DIAL

8/10/17

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