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PiDP-8
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Discussion group for the PiDP-8.
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Jeff Shrager
, …
Warren Young
6
Feb 11
Anyone else have trouble getting LAS/OSR to work?
On Feb 11, 2025, at 10:19, Jeff Shrager <jshr...@gmail.com> wrote: > > I once submitted
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Anyone else have trouble getting LAS/OSR to work?
On Feb 11, 2025, at 10:19, Jeff Shrager <jshr...@gmail.com> wrote: > > I once submitted
Feb 11
Jeff Shrager
, …
Mike Katz
16
Feb 7
Problems with new install
Thanks! The problem stemmed from google legacy page confusion. I started from this page: https://
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Problems with new install
Thanks! The problem stemmed from google legacy page confusion. I started from this page: https://
Feb 7
Roberto
,
William Cattey
3
Jan 30
Increase LED brightness
Thanks Bill, I did the test and the brightness is still low, I also have another Pidp8 and it always
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Increase LED brightness
Thanks Bill, I did the test and the brightness is still low, I also have another Pidp8 and it always
Jan 30
Roberto
, …
timr...@gmail.com
20
Jan 30
Send and receive bytes with the pidp-8 via a serial port
Great job! Il giorno martedì 28 gennaio 2025 alle 21:55:18 UTC+1 timr...@gmail.com ha scritto: I got
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Send and receive bytes with the pidp-8 via a serial port
Great job! Il giorno martedì 28 gennaio 2025 alle 21:55:18 UTC+1 timr...@gmail.com ha scritto: I got
Jan 30
djatm...@gmail.com
, …
timr...@gmail.com
12
Jan 27
when entering value 7 or 8, both LEDs are burning
My PiDP-8i runs TSS/8 and I can watch the null job running by the AC counting. This is the first type
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when entering value 7 or 8, both LEDs are burning
My PiDP-8i runs TSS/8 and I can watch the null job running by the AC counting. This is the first type
Jan 27
Rick Adams
Jan 26
Remote access to OS/8 -- pitfalls
I wanted to be able to access my OS/8 system remotely, so I put these lines in /opt/pidp8i/share/boot
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Remote access to OS/8 -- pitfalls
I wanted to be able to access my OS/8 system remotely, so I put these lines in /opt/pidp8i/share/boot
Jan 26
timr...@gmail.com
, …
Roberto
4
Jan 26
This is my latest undertaking for the PiDP-8i
You did a great job! Il giorno giovedì 23 gennaio 2025 alle 21:51:39 UTC+1 timr...@gmail.com ha
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This is my latest undertaking for the PiDP-8i
You did a great job! Il giorno giovedì 23 gennaio 2025 alle 21:51:39 UTC+1 timr...@gmail.com ha
Jan 26
Rick Adams
2
Jan 25
What's the password for TSS8 account 77,77?
Well, how about that. It doesn't HAVE a password! .LOGIN 7777 and you're in! Nevermind... On
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What's the password for TSS8 account 77,77?
Well, how about that. It doesn't HAVE a password! .LOGIN 7777 and you're in! Nevermind... On
Jan 25
MogensB
,
William Cattey
7
12/28/24
scanswitch returns 8 even if I have no panel connected?
Of course, you did the hard work, so the least I can do is a little testing :-) TL;DR everything
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scanswitch returns 8 even if I have no panel connected?
Of course, you did the hard work, so the least I can do is a little testing :-) TL;DR everything
12/28/24
Obsolescence
, …
Warren Young
15
12/26/24
Proposal for add-on package to pidp8i
On Dec 25, 2024, at 21:37, William Cattey <bill....@gmail.com> wrote: As the author of most
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Proposal for add-on package to pidp8i
On Dec 25, 2024, at 21:37, William Cattey <bill....@gmail.com> wrote: As the author of most
12/26/24
ggrinton
,
William Cattey
3
12/25/24
Observations on a rebuild
Thanks Bill. As noted in another thread, once I moved to the current source most of these are
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Observations on a rebuild
Thanks Bill. As noted in another thread, once I moved to the current source most of these are
12/25/24
Casey Bralla
, …
Warren Young
4
12/25/24
Serial USB Port / simh Script File Location?
Beware that a good many USB to serial adapters have speed floors above what PDP-8 era equipment could
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Serial USB Port / simh Script File Location?
Beware that a good many USB to serial adapters have speed floors above what PDP-8 era equipment could
12/25/24
ggrinton
, …
Steve Tockey
7
12/23/24
TSS/8 not starting cleanly
If you can recreate the TSS-8 hang, please let us know what the Program Counter lights (top row) look
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TSS/8 not starting cleanly
If you can recreate the TSS-8 hang, please let us know what the Program Counter lights (top row) look
12/23/24
cava...@avantguardsystems.com
, …
Flavio Villanustre
12
12/19/24
updating
Thanks everyone for the feedback. As you'll see Flavio helped me a lot. In the end I burned the
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updating
Thanks everyone for the feedback. As you'll see Flavio helped me a lot. In the end I burned the
12/19/24
Obsolescence
,
William Cattey
3
12/5/24
Updated install instructions after the Pi 5 merge
Will fix Right Now! Thanks, Oscar.
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Updated install instructions after the Pi 5 merge
Will fix Right Now! Thanks, Oscar.
12/5/24
David Betz
, …
Obsolescence
4
11/25/24
Raspberry Pi 5?
All, Just to leave a note to future readers: Thanks to the work of Bill Cattey et al, the Pi 5 now
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Raspberry Pi 5?
All, Just to leave a note to future readers: Thanks to the work of Bill Cattey et al, the Pi 5 now
11/25/24
David Betz
,
Obsolescence
2
11/25/24
Versions of the PiDP-8
David, There were 3 versions. 2015-2016: one with white switches that you had to paint themselves.
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Versions of the PiDP-8
David, There were 3 versions. 2015-2016: one with white switches that you had to paint themselves.
11/25/24
William Cattey
, …
Vincent Slyngstad
42
11/24/24
Let's merge pi5 and ils2 but not cycle realistic into trunk right now.
Well, I did some benchmarking, and the results so far are a 20-30% speedup in non-CR mode.
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Let's merge pi5 and ils2 but not cycle realistic into trunk right now.
Well, I did some benchmarking, and the results so far are a 20-30% speedup in non-CR mode.
11/24/24
Mike Katz
,
Glenn Babecki
5
11/4/24
The other dectape
In a era where magtape was dumb and had no positional information on it, MIT/DEC created an
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The other dectape
In a era where magtape was dumb and had no positional information on it, MIT/DEC created an
11/4/24
Mike Katz
, …
Heinz-Bernd Eggenstein
23
10/20/24
Step Counter LED question
I think an importnat point is that the "cycle realistic" code version is doing other things
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Step Counter LED question
I think an importnat point is that the "cycle realistic" code version is doing other things
10/20/24
Mike Katz
,
William Cattey
2
10/18/24
Initial Benchmark Results for Trunk, PI5, PI5 ILS & PI5 ILS/Cycle
I suspect that the reason why the number of instructions per second on the Pi4 and Pi5 is so much
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Initial Benchmark Results for Trunk, PI5, PI5 ILS & PI5 ILS/Cycle
I suspect that the reason why the number of instructions per second on the Pi4 and Pi5 is so much
10/18/24
Mike Katz
10/18/24
SiMH Benchmark Graphed
Below is a graph of the emulated instructions per second by build and PI type. If the graphic doesn
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SiMH Benchmark Graphed
Below is a graph of the emulated instructions per second by build and PI type. If the graphic doesn
10/18/24
Mike Katz
10/16/24
Initial Benchmark Results
Here are the initial Benchmark Results:
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Initial Benchmark Results
Here are the initial Benchmark Results:
10/16/24
Mike Katz
10/10/24
Benchmark Video
Here is a short video of the PiDP-8/I running the benchmark test: https://drive.google.com/file/d/
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Benchmark Video
Here is a short video of the PiDP-8/I running the benchmark test: https://drive.google.com/file/d/
10/10/24
Bill Cattey
10/8/24
Re: Benchmarking
Those look correct to me. Though, according to the list of branches at https://tangentsoft.com/pidp8i
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Re: Benchmarking
Those look correct to me. Though, according to the list of branches at https://tangentsoft.com/pidp8i
10/8/24
Casey Bralla
, …
timr...@gmail.com
5
9/28/24
Limiting ssh to 110 Baud
Love the idea of a "TTY" with a pdp-8 as that is what was normally used at least until
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Limiting ssh to 110 Baud
Love the idea of a "TTY" with a pdp-8 as that is what was normally used at least until
9/28/24
Martin Reilly
9/28/24
Troubleshooting - lowest five bits of PC lit?
I finally got back to my started-but-not-finished PiDP8 recently. Originally gave up because it was
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Troubleshooting - lowest five bits of PC lit?
I finally got back to my started-but-not-finished PiDP8 recently. Originally gave up because it was
9/28/24
Franck Lopez
, …
Obsolescence
8
9/2/24
For the reference of the diodes
Yes, 1N4148. But the diodes have minimal requirements in this schematic, most anything that says
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For the reference of the diodes
Yes, 1N4148. But the diodes have minimal requirements in this schematic, most anything that says
9/2/24
Christer Karlsson
, …
hansj...@gmail.com
5
9/1/24
Two problems
I mean PDP-8 of course, but the same config applies to the PiDP-11 On Saturday, August 31, 2024 at 4:
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Two problems
I mean PDP-8 of course, but the same config applies to the PiDP-11 On Saturday, August 31, 2024 at 4:
9/1/24
Mike Katz
, …
Steve Tockey
12
8/29/24
PiDPI-8/I revision question - version 2 - reposted
Mike, Sorry I don't know the answer. Oscar is quite open to sharing things so I'm sure he
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PiDPI-8/I revision question - version 2 - reposted
Mike, Sorry I don't know the answer. Oscar is quite open to sharing things so I'm sure he
8/29/24