> On May 2, 2021, at 1:25 PM, Josh Dersch wrote:
>
> Sorry for the delay, but finally, here's a pile of pictures of the +5V ECO on
> the backplane. Let me know if you need more detail on something:
>
> https://1drv.ms/u/s!Aqb36sqnCIfMpMAqf_6YvmsEEU-T0A?e=Y6WBfV
Oh, this is great, thanks! I
On Sun, Apr 25, 2021 at 11:26 PM Fritz Mueller wrote:
>
> > On Apr 24, 2021, at 7:02 PM, Josh Dersch wrote:
> > If you have notes on re-creating the harness, let me know.
>
> Hi Josh,
>
> A few pointers -- I think I left some of these in a comment on one of your
> fb posts, but will repeat here
> http://bitsavers.org/pdf/dec/pdp11/1145/KB11-A_revS_Engineering_Drawings_Dec1973.pdf
Thanks very much, Al!
On 4/28/21 10:19 AM, Fritz Mueller wrote:
Ohh... I'd be very, *very* interested to see versions of the /45 drawings
other than the two sets that are commonly available!
http://bitsavers.org/pdf/dec/pdp11/1145/KB11-A_revS_Engineering_Drawings_Dec1973.pdf
On Wed, 28 Apr 2021, Fritz Mueller wrote:
On Apr 28, 2021, at 9:51 AM, Al Kossow via cctalk wrote:
I have other 45/70 drawings that i haven't pdf'ed
I need to see if they are different revs than what I already have
Ohh... I'd be very, *very* interested to see versions of the /45
drawings ot
On 4/28/21 9:51 AM, Al Kossow via cctalk wrote:
On 4/28/21 9:14 AM, Noel Chiappa via cctalk wrote:
https://www.computerhistory.org/collections/catalog/102749003
so maybe Al will take pity on us and scan it!
I'll see what I can do.
I have other 45/70 drawings that i haven't pdf'ed
I need
> On Apr 28, 2021, at 9:51 AM, Al Kossow via cctalk
> wrote:
>
> I have other 45/70 drawings that i haven't pdf'ed
> I need to see if they are different revs than what I already have
Ohh... I'd be very, *very* interested to see versions of the /45 drawings
other than the two sets that are c
On 4/28/21 9:14 AM, Noel Chiappa via cctalk wrote:
https://www.computerhistory.org/collections/catalog/102749003
so maybe Al will take pity on us and scan it!
I'll see what I can do.
I have other 45/70 drawings that i haven't pdf'ed
I need to see if they are different revs than what I alr
> On Apr 28, 2021, at 9:14 AM, Noel Chiappa via cctalk
> wrote:
>
> ISTR a previous, un-fulfilled request for the -11/70 wirelist, so it's been
> missing for a while.
>
> We _might_ have the -11/45 wirelist:
>
>
> http://www.bitsavers.org/pdf/dec/pdp11/1145/1145_System_Engineering_Drawings
> From: Eric Smith
> The KB11-B (original 11/70) and KB11-C (later 11/70) have essentially
> the same changes as from the KB11-A to KB11-D
Speaking of which, two of the boards that are different in the KB11-D, from
the -A, are _identical_ to boards in the KB11-C - the M8123 ROM & ROM
Van: Noel Chiappa via cctalk<mailto:cctalk@classiccmp.org>
Verzonden: woensdag 28 april 2021 16:08
Aan: cctalk@classiccmp.org<mailto:cctalk@classiccmp.org>
CC: j...@mercury.lcs.mit.edu<mailto:j...@mercury.lcs.mit.edu>
Onderwerp: Re: DEC PDP-11/45 backplane +5 ECO
&g
> From: Henk Gooijen
> I have the M8120 and 4 M8121 boards (32kW bipolar RAM). It is a bit
> weird, but in the 11/55 are also two G114 boards (4kW MOS RAM), IIRC.
G114s? Those are the sense/inhibit module from the MM11-U/MJ11. Did you
mean G401s?
If so, one guess as to what happened
Wait, that 11/45 looks to have an MS11-LK memory board in it. I assume
that's just normal slow Unibus memory, or was it also able to be
installed on the FASTBUS?
C
On 4/27/2021 12:36 PM, Michael Thompson via cctech wrote:
On 4/24/21 10:28 PM, Noel Chiappa via cctalk wrote:
Noel
PS:
>
>
> On 4/24/21 10:28 PM, Noel Chiappa via cctalk wrote:
> > Noel
> >
> > PS: I wonder how many people here have -11/45's? ISTR one other, but
> they aren't
> > common.
The Rhode Island Computer Museum has two. The pair were the interface
between fire pull boxes and the 911 dispatch system
On Sat, Apr 24, 2021 at 9:28 PM Noel Chiappa via cctalk <
cctalk@classiccmp.org> wrote:
> I had a look at my /45 (a later KB11-D - although I think the backplanes
> for
> the -A and -D are identical),
>
I did not think they used the same backplane, but 11/45 maintenance manual
(EK-11045-MM-007) c
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Fritz
Mueller via cctalk
> Sent: Monday, April 26, 2021 2:27 AM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: DEC PDP-11/45 backplane +5 ECO
>
>
> >
> On Apr 24, 2021, at 7:02 PM, Josh Dersch wrote:
> If you have notes on re-creating the harness, let me know.
Hi Josh,
A few pointers -- I think I left some of these in a comment on one of your fb
posts, but will repeat here in case others may find it useful:
* The wire list in the commonly
On 4/25/21 12:08 PM, Tom Uban via cctech wrote:
On 4/24/21 10:28 PM, Noel Chiappa via cctalk wrote:
> From: Fritz Mueller
> could I ask that you take some closeups around the Mate-n-Locks along
> the top? I'd be very interested to see the board traces and the details
> of th
Very interesting -- thanks for the info, folks! My backplane has none of this
wiring.
I'd really like to see if the traces also look the same, too, though there is
no real rush. Hopefully it will be more convenient for Josh to get some
straight-on pictures, since his backplane is already pull
> I had a look at my /45 ... and it seems to ... look just like those on
> Josh's. I'd really want to take pictures of mine .. so I can compare
> them directly, though, not depend on visual memory.
Yeah, mine (a late /55, actually) has the _exact_ same wires at Josh's.
So that's probab
I do. An early one from Stanford.
Sent from my iPhone
> On Apr 24, 2021, at 11:28 PM, Noel Chiappa via cctalk
> wrote:
>
>
>>
>> From: Fritz Mueller
>
>> could I ask that you take some closeups around the Mate-n-Locks along
>> the top? I'd be very interested to see the board traces and th
Van: Noel Chiappa via cctalk<mailto:cctalk@classiccmp.org>
Verzonden: zondag 25 april 2021 05:28
Aan: cctalk@classiccmp.org<mailto:cctalk@classiccmp.org>
CC: j...@mercury.lcs.mit.edu<mailto:j...@mercury.lcs.mit.edu>
Onderwerp: Re: DEC PDP-11/45 backplane +5 ECO
PS: I wonder ho
On 4/24/21 10:28 PM, Noel Chiappa via cctalk wrote:
> > From: Fritz Mueller
>
> > could I ask that you take some closeups around the Mate-n-Locks along
> > the top? I'd be very interested to see the board traces and the details
> > of the red bus wiring there.
>
> I had a look at my
Noel wrote...
> PS: I wonder how many people here have -11/45's? ISTR one other, but
> they aren't common.
Tony replied...
I do.
--
I have a dual bay 11/45 with RL02, RX02, BA11 expansion, and an early 3rd party
(CSI?) linktape. All restored, tested, and working with spares and docs
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Tony Duell
> via cctalk
> Sent: Saturday, April 24, 2021 11:56 PM
> To: Noel Chiappa; General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: DEC PDP-11/45 backplane +5 ECO
> PS: I wonder how many people here have -11/45's? ISTR one other, but they
> aren't
> common.
I do.
-tony
> From: Fritz Mueller
> could I ask that you take some closeups around the Mate-n-Locks along
> the top? I'd be very interested to see the board traces and the details
> of the red bus wiring there.
I had a look at my /45 (a later KB11-D - although I think the backplanes for
the -
On Sat, Apr 24, 2021 at 1:36 PM Fritz Mueller via cctalk <
cctalk@classiccmp.org> wrote:
> Hi Josh,
>
> Among the pictures linked from your message about the H742a parts, there
> is one picture of you backplane. I have been looking for some time for
> information about the following 11/45 ECO:
>
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