18 Oct
2023
18 Oct
'23
6:56 p.m.
I am working on a deal which includes several PDP11/15 or 20s. I will be
looking at them next week and hope to get more details. I will look for
exact model numbers and configuration.At least 2 of them have non DEC
silkscreens on the front panel.
Also a selection of 11/05 and 11/10 including 5 1/4 box, BA11-D, and BA11-K
units.
If you are interested in a box or parts please email me off list.
Thanks, Paul
19 Oct
19 Oct
4:48 p.m.
I sincerely doubt I could afford a PDP-11/20 but I still have nostalgia for the first
machine I used at university. So I have to ask.
mcl
11:35 p.m.
I have a few systems in rough shape, and need parts. Let me know what you
find, i am interested. I mainly run my unibus 11/34 systems, but i have a
few q bus syatems in need of parts and repair.
Thanks,
Devin D.
On Thu, Oct 19, 2023, 8:02 PM Mark Linimon via cctalk <cctalk(a)classiccmp.org>
wrote:
I sincerely doubt I could afford a PDP-11/20 but I
still have nostalgia
for the first machine I used at university. So I have to ask.
mcl
20 Oct
20 Oct
1:58 a.m.
Hi Devin,
I'm up for a few minutes now, or call me after 7 or so any night.
Paul
On Fri, Oct 20, 2023 at 1:35 AM devin davison via cctalk <
cctalk(a)classiccmp.org> wrote:
I have a few systems in rough shape, and need parts.
Let me know what you
find, i am interested. I mainly run my unibus 11/34 systems, but i have a
few q bus syatems in need of parts and repair.
Thanks,
Devin D.
On Thu, Oct 19, 2023, 8:02 PM Mark Linimon via cctalk <
cctalk(a)classiccmp.org>
wrote:
I sincerely doubt I could afford a PDP-11/20 but
I still have nostalgia
for the first machine I used at university. So I have to ask.
mcl
1:59 a.m.
The RICM has an empty 11/20 chassis and the power supply. All it needs is
the processor backplanes. Is there any chance you have a set of backplanes
available?
On Fri, Oct 20, 2023, 2:35 AM devin davison via cctalk <
cctalk(a)classiccmp.org> wrote:
I have a few systems in rough shape, and need parts.
Let me know what you
find, i am interested. I mainly run my unibus 11/34 systems, but i have a
few q bus syatems in need of parts and repair.
Thanks,
Devin D.
On Thu, Oct 19, 2023, 8:02 PM Mark Linimon via cctalk <
cctalk(a)classiccmp.org>
wrote:
I sincerely doubt I could afford a PDP-11/20 but
I still have nostalgia
for the first machine I used at university. So I have to ask.
mcl
2 a.m.
I might. Do you need the boards also?
I'm up now if you want to call.
Paul
217
766
7690
On Fri, Oct 20, 2023 at 3:58 AM Michael Thompson via cctalk <
cctalk(a)classiccmp.org> wrote:
The RICM has an empty 11/20 chassis and the power
supply. All it needs is
the processor backplanes. Is there any chance you have a set of backplanes
available?
On Fri, Oct 20, 2023, 2:35 AM devin davison via cctalk <
cctalk(a)classiccmp.org> wrote:
I have a few systems in rough shape, and need
parts. Let me know what you
find, i am interested. I mainly run my unibus 11/34 systems, but i have a
few q bus syatems in need of parts and repair.
Thanks,
Devin D.
On Thu, Oct 19, 2023, 8:02 PM Mark Linimon via cctalk <
cctalk(a)classiccmp.org>
wrote:
I sincerely doubt I could afford a PDP-11/20 but
I still have nostalgia
for the first machine I used at university. So I have to ask.
mcl
9:11 a.m.
On 10/20/23 03:59, Michael Thompson via cctalk wrote:
The RICM has an empty 11/20 chassis and the power
supply. All it needs is
the processor backplanes. Is there any chance you have a set of backplanes
available?
I have a DD11-PK backplane (Part No. 70-11523) with a few
bent pins. None are bent so badly they can't be
straightened. From 11/04 or 11/34. Free if you pay shipping.
Jon
9:46 a.m.
On Fri, Oct 20, 2023 at 12:11 PM Jon Elson via cctalk
<cctalk(a)classiccmp.org> wrote:
On 10/20/23 03:59, Michael Thompson via cctalk wrote:
DD11-PK is for 11/34 (top two slots for CPU). PDP-11/04 uses standard
DD11-DK (single-board CPU, doesn't need special slots).
The 11/20 is entirely different. It has three 4-slot backplanes for
CPU boards with "random" wiring and Unibus out on AB of final slot.
It would be unusual but not impossible to see the 11/20 CPU backplane
assembly outside of a BA11-C cabinet.
If one had 12 DEC backplane blocks, one could make a replacement but
it would be quite an undertaking. Might be easier to make a PCB-based
replacement with modern connectors. Could also upgrade power input
scheme while at it.
-ethan
The RICM has an empty 11/20 chassis and the power
supply. All it needs is
the processor backplanes. Is there any chance you have a set of backplanes
available?
I have a DD11-PK backplane (Part No. 70-11523) with a few
bent pins. None are bent so badly they can't be
straightened. From 11/04 or 11/34. Free if you pay shipping.
21 Oct
21 Oct
9:16 a.m.
On 10/20/23 11:46, Ethan Dicks via cctalk wrote:
On Fri, Oct 20, 2023 at 12:11 PM Jon Elson via cctalk
<cctalk(a)classiccmp.org> wrote:
Right. I was just noting that I had this backplane
available, if anyone needed it.
Jon
On 10/20/23 03:59, Michael Thompson via cctalk
wrote:
DD11-PK is for
11/34 (top two slots for CPU). PDP-11/04 uses standard
DD11-DK (single-board CPU, doesn't need special slots).
The 11/20 is entirely different. It has three 4-slot backplanes for
CPU boards with "random" wiring and Unibus out on AB of final slot.
The RICM has an empty 11/20 chassis and the power
supply. All it needs is
the processor backplanes. Is there any chance you have a set of backplanes
available?
I have a DD11-PK backplane (Part No. 70-11523) with a few
bent pins. None are bent so badly they can't be
straightened. From 11/04 or 11/34. Free if you pay shipping. 
9:42 a.m.
Interesting. Would a DD11-PK be usable as a normal Unibus/SPC backplane
for a 11/05? I do need one but I'm not sure if the PK has a true "Unibus
in" on say slot 2 that I could put a jumper into from the 11/05's backplane.
Anyone know?
C
On 10/21/2023 12:16 PM, Jon Elson via cctalk wrote:
On 10/20/23 11:46, Ethan Dicks via cctalk wrote:
On Fri, Oct 20, 2023 at 12:11 PM Jon Elson via
cctalk
<cctalk(a)classiccmp.org> wrote:
Right. I was just noting that I had this backplane available, if
anyone needed it.
Jon
On 10/20/23 03:59, Michael Thompson via cctalk
wrote:
DD11-PK is for
11/34 (top two slots for CPU). PDP-11/04 uses standard
DD11-DK (single-board CPU, doesn't need special slots).
The 11/20 is entirely different. It has three 4-slot backplanes for
CPU boards with "random" wiring and Unibus out on AB of final slot.
The RICM has an empty 11/20 chassis and the power
supply. All it
needs is
the processor backplanes. Is there any chance you have a set of
backplanes
available?
I have a DD11-PK backplane (Part No. 70-11523) with a few
bent pins. None are bent so badly they can't be
straightened. From 11/04 or 11/34. Free if you pay shipping.
6:23 p.m.
The DD11-PK is used only on the 11/04 and 11/34.
The 11/05 had 4 dedicated backplanes to use. Pick the one you want to match
the configuration you need.
Paul
On Sat, Oct 21, 2023 at 11:42 AM Chris Zach via cctalk <
cctalk(a)classiccmp.org> wrote:
Interesting. Would a DD11-PK be usable as a normal
Unibus/SPC backplane
for a 11/05? I do need one but I'm not sure if the PK has a true "Unibus
in" on say slot 2 that I could put a jumper into from the 11/05's
backplane.
Anyone know?
C
On 10/21/2023 12:16 PM, Jon Elson via cctalk wrote:
On 10/20/23 11:46, Ethan Dicks via cctalk
wrote:
On Fri, Oct 20, 2023 at 12:11 PM Jon Elson via
cctalk
<cctalk(a)classiccmp.org> wrote:
Right. I was just noting that I had this backplane available, if
anyone needed it.
Jon
On 10/20/23 03:59, Michael Thompson via cctalk
wrote:
> The RICM has an empty 11/20 chassis and the power supply. All it
> needs is
> the processor backplanes. Is there any chance you have a set of
> backplanes
> available?
>
I have a DD11-PK backplane (Part No. 70-11523) with a few
bent pins. None are bent so badly they can't be
straightened. From 11/04 or 11/34. Free if you pay shipping.
DD11-PK is for 11/34 (top two slots for CPU). PDP-11/04 uses standard
DD11-DK (single-board CPU, doesn't need special slots).
The 11/20 is entirely different. It has three 4-slot backplanes for
CPU boards with "random" wiring and Unibus out on AB of final slot.
30 Oct
30 Oct
12:26 a.m.
Hi Michael,
I might be able to part out a system. Any idea what one is worth?
Paul
On Fri, Oct 20, 2023 at 3:58 AM Michael Thompson via cctalk <
cctalk(a)classiccmp.org> wrote:
The RICM has an empty 11/20 chassis and the power
supply. All it needs is
the processor backplanes. Is there any chance you have a set of backplanes
available?
On Fri, Oct 20, 2023, 2:35 AM devin davison via cctalk <
cctalk(a)classiccmp.org> wrote:
I have a few systems in rough shape, and need
parts. Let me know what you
find, i am interested. I mainly run my unibus 11/34 systems, but i have a
few q bus syatems in need of parts and repair.
Thanks,
Devin D.
On Thu, Oct 19, 2023, 8:02 PM Mark Linimon via cctalk <
cctalk(a)classiccmp.org>
wrote:
I sincerely doubt I could afford a PDP-11/20 but
I still have nostalgia
for the first machine I used at university. So I have to ask.
mcl
12:34 a.m.
I think a complete system would be worth more than the sum of its parts.
On Mon, Oct 30, 2023, 3:27 AM Paul Anderson via cctalk <
cctalk(a)classiccmp.org> wrote:
Hi Michael,
I might be able to part out a system. Any idea what one is worth?
Paul
On Fri, Oct 20, 2023 at 3:58 AM Michael Thompson via cctalk <
cctalk(a)classiccmp.org> wrote:
The RICM has an empty 11/20 chassis and the power
supply. All it needs is
the processor backplanes. Is there any chance you have a set of
backplanes
available?
On Fri, Oct 20, 2023, 2:35 AM devin davison via cctalk <
cctalk(a)classiccmp.org> wrote:
> I have a few systems in rough shape, and need parts. Let me know what
you
> find, i am interested. I mainly run my
unibus 11/34 systems, but i
have a
> few q bus syatems in need of parts and
repair.
>
> Thanks,
>
> Devin D.
>
> On Thu, Oct 19, 2023, 8:02 PM Mark Linimon via cctalk <
> cctalk(a)classiccmp.org>
> wrote:
>
> > I sincerely doubt I could afford a PDP-11/20 but I still have
nostalgia
for the first machine I used at university. So I have
to ask.
mcl
24 Oct
24 Oct
9 a.m.
On Wed, Oct 18, 2023 at 20:56 Paul Anderson via cctalk <
cctalk(a)classiccmp.org> wrote:
I am working on a deal which includes several PDP11/15
or 20s. I will be
looking at them next week and hope to get more details. I will look for
exact model numbers and configuration.At least 2 of them have non DEC
silkscreens on the front panel.
Also a selection of 11/05 and 11/10 including 5 1/4 box, BA11-D, and BA11-K
units.
If you are interested in a box or parts please email me off list.
Thanks, Paul
Hi I’m interested in an 11/20. I would also be interested in seeing some
photos of the stuff and a list of items from the lot. You can message me at
708 247 7336 I can also accept calls on this number. Thanks.
28 Jan
28 Jan
8:37 p.m.
A quick update: The seller and I have not been able to reach a deal on any
of this. He is looking for ebay or higher prices, and nothing is complete.
It appears it is bits and pieces leftover from scrapping years ago.
Thanks, Paul
On Wed, Oct 18, 2023 at 8:56 PM Paul Anderson <useddec(a)gmail.com> wrote:
I am working on a deal which includes several PDP11/15
or 20s. I will be
looking at them next week and hope to get more details. I will look for
exact model numbers and configuration.At least 2 of them have non DEC
silkscreens on the front panel.
Also a selection of 11/05 and 11/10 including 5 1/4 box, BA11-D, and
BA11-K units.
If you are interested in a box or parts please email me off list.
Thanks, Paul
10:09 p.m.
The RICM got a complete 11/20 donation a few weeks ago, so we no longer
need parts to complete the empty chassis.
On Sun, Jan 28, 2024, 11:37 PM Paul Anderson via cctalk <
cctalk(a)classiccmp.org> wrote:
A quick update: The seller and I have not been able to
reach a deal on any
of this. He is looking for ebay or higher prices, and nothing is complete.
It appears it is bits and pieces leftover from scrapping years ago.
Thanks, Paul
On Wed, Oct 18, 2023 at 8:56 PM Paul Anderson <useddec(a)gmail.com> wrote:
I am working on a deal which includes several
PDP11/15 or 20s. I will be
looking at them next week and hope to get more details. I will look for
exact model numbers and configuration.At least 2 of them have non DEC
silkscreens on the front panel.
Also a selection of 11/05 and 11/10 including 5 1/4 box, BA11-D, and
BA11-K units.
If you are interested in a box or parts please email me off list.
Thanks, Paul
100
days inactive
202
days old
15 comments
8 participants
participants (8)
-
Chris Zach -
devin davison -
Ethan Dicks -
Jon Elson -
Mark Linimon -
Michael Thompson -
Paul Anderson -
Ron Strojny