[chbot] Seeking PDP-11 Miscellaneous Discussion

Wed May 8 07:42:25 BST 2024

Hi,

I likely don't need anything from your 11/44, my 11/40 is very complete but
I have very few spare parts. What I would like to track down is a heap
of original 74 series chips from about 1970.

I know someone in the North Island who also has an 11/44, they're coming
down on Monday to view a PDP-8 Straight.

When my 11/40 is up and running properly I plan to have a day where anyone
can come see it and have some hands-on time with it. I suspect that might
be quite a while away but maybe I'll get lucky.

If you or anyone is interested in seeing it over the weekend send me an
email because I will be spending about 4 days with it so that's a good time
as it will be running.

Thanks

On Tue, May 7, 2024 at 11:00 PM <chchrobotics-request at lists.ourshack.com>
wrote:

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> Today's Topics:
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>    1. Seeking PDP-11 Unibus Terminators (Ashlin Inwood)
>    2. Re: Seeking PDP-11 Unibus Terminators (Andy Gardner)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 7 May 2024 20:51:01 +1200
> From: Ashlin Inwood <ashlin.inwood+robotics at gmail.com>
> To: chchrobotics at lists.ourshack.com
> Subject: [chbot] Seeking PDP-11 Unibus Terminators
> Message-ID:
>         <CANmz1+2NsZ9PWLpmSYSFDTPcTy=0g7bYdmb=
> z+XePtQDEp_2DA at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi all,
>
> This is a bit of a long shot but I am looking to borrow or acquire a Unibus
> backplane and terminators. In general, any DEC tools equipment, or
> parts would also be very helpful.
>
> I am restoring a PDP-11/40, I have just finished making a Unibone (a
> BeagleBone on a Unibus card). I wish to get a backplane to test the
> Unibone in isolation without dismantling my 11/40.
>
> The system is at least partially functional, it runs exceptionally simple
> programs with minimal issues. The computer is built mostly from 74 series
> logic so as you would imagine it can be a little bit difficult to tell if
> it's operating correctly. With the Unibone I will be emulating some core
> memory and running through some test programs.
>
> I have one RK05 up and running as well, I need to calibrate the heads at
> some point but the first step is the processor. I've got 4 days off
> starting on Friday so I hope to make some serious progress towards that.
>
> Here is a link to some images if you are interested:
> https://imgur.com/a/8HxYRI8
>
> Sincerely,
> Ashlin
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> ------------------------------
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> Message: 2
> Date: Tue, 7 May 2024 21:52:40 +1200
> From: Andy Gardner <ceo at andygardner.com>
> To: chchrobotics at lists.ourshack.com
> Subject: Re: [chbot] Seeking PDP-11 Unibus Terminators
> Message-ID: <1dca5c12-3b78-495f-87f9-bd39735d2ab1 at andygardner.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
>
> I LOVE YOU AND I WANT TO HAVE YOUR BABIES.
>
> Whoops. I mean. Errr. (Blush) Ermmmm. Awkward.
>
> I have a PDP11/44 here if that has anything you need (to borrow).
>
> Pretty sure I snaffled a Unibus backplane of the Junk Table a while
> back, but it'll take a bit of effort to find it.
>
> Would love to see an 11/40 up and running again!
>
>
> On 7/05/24 20:51, Ashlin Inwood wrote:
> > Hi all,
> >
> > This is a bit of a long shot but I am looking to borrow or acquire
> > a Unibus backplane and terminators. In general, any DEC tools equipment,
> > or parts would also be very helpful.
> >
> > I am restoring a PDP-11/40, I have just finished making a Unibone (a
> > BeagleBone on a Unibus card). I wish to get a backplane to test the
> > Unibone in isolation without dismantling my 11/40.
> >
> > The system is at least partially functional, it runs exceptionally
> > simple programs with minimal issues. The computer is built mostly from
> > 74 series logic so as you would imagine it can be a little bit difficult
> > to tell if it's operating correctly. With the Unibone I will
> > be emulating some core memory and running through some test programs.
> >
> > I have one RK05 up and running as well, I need to calibrate the heads at
> > some point but the first step is the processor. I've got 4 days off
> > starting on Friday so I hope to make some serious progress towards that.
> >
> > Here is a link to some images if you are interested:
> > https://imgur.com/a/8HxYRI8 <https://imgur.com/a/8HxYRI8>
> >
> > Sincerely,
> > Ashlin
> >
> >
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