Looking for Limited Function Board

[Paul Anderson]

Hi Pontus,

I looked at my limited function front panels, and they were 54-11507s. I
have not looked at any prints. Where did you find the 54-11165 number?
Could it be for a Q-bus system?

The 50-XXXXX is the etched PCB. DEC usually added a 1 to that number to
make it complete board.

Thanks, Paul



On Mon, Feb 4, 2019 at 9:41 PM Paul Anderson <useddec at gmail.com> wrote:

> I have a few of the limited function and programmers panels. I do not
> recall either of them being dependent on particular backplane. I'll try to
> pull a few a few later and check the part number on them.
>
> Remember, a 54-XXXXX number can become a 70-XXXXX with the addition of a
> cable or something simple.
>
> Paul
>
> On Mon, Feb 4, 2019 at 12:51 PM Anders Sandahl via cctech <
> cctech at classiccmp.org> wrote:
>
>> > Date: Sun, 3 Feb 2019 22:22:42 +0100
>> > From: Pontus Pihlgren <pontus at Update.UU.SE>
>> > To: "General Discussion: On-Topic and Off-Topic Posts"
>> >       <cctalk at classiccmp.org>
>> > Subject: Looking for Limited Function Board
>> > Message-ID: <20190203212242.GF24947 at Update.UU.SE>
>> > Content-Type: text/plain; charset=us-ascii
>> >
>> > Hi
>> >
>> > I'm restoring a PDP-8/a with the help of some
>> > friends. The CPU is now passing the MAINDECs I've
>> > thrown at it. The memory is a modern semiconductor
>> > board my friend Anders Sandahl made.
>> >
>> > This machine is pieced together from several others
>> > and the limited function panel I got does not match
>> > the backplane I have.
>> >
>> > My theory is the DEC simplified the design of the
>> > boardto cut costs and simpler design is not
>> > compatible. Mine is labeled (on the PCB):
>> >
>> > "LIMITED FUNCTION BD.
>> > 5411507
>> > 5011506C-P2"
>> >
>> > And the one I need is:
>> >
>> > "LIMITED FUNCTION
>> > 5411165
>> > 5011167"
>> >
>> > However, the picture I have of the other is not so
>> > good. I may have read the numbera wrong.
>> >
>> > I would very much like to buy one to finish this
>> > project.
>> >
>> > /P
>>
>> Får du inget napp så ritar jag upp ett kort till dig, det borde gå att
>> flytta över brytarna från det du har. Lite synd att scrappa ett
>> originalkort bara, men är man försiktigt så man inte tar sönder det så går
>> det ju att återställa...
>>
>> /A
>>
>>