Looking for info on memory

[Nigel Johnson Ham]

In all the hundreds of systems I have shipped, I have never put the CPU
in slot 3! I was VP Operations of Transduction, DEC's biggest components
group OEM in Canada.

No, I don't know if the CPU is good (it is a dual-width KDF11-A btw),
but it is in slot 1 AB with a DLV11J in slot 2AB.  The memory has been
in slot 3 as well as lower.  Since there is nothing above or below it on
the CD side there cannot be any interference in the CD connectors.

I do have an 11/73 dual width board arriving tomorrow so will see if I
get the same results with it.

Thanks for reading,

Nigel


On 2021-10-19 7:55 p.m., Chris Zach via cctalk wrote:
> Hm, ok all my Plessy boards are dual height, 1mb boards. Are you sure
> the 11/23+ is working, and do you have the CPU in slot 3 with the
> memory board in slot 4 (staying away from the PMI slots)?
>
> C
>
> On 10/19/2021 6:51 PM, Nigel Johnson Ham via cctalk wrote:
>> It's just a memory board and looks like one!
>>
>> Picture here:
>>
>> https://www.mediafire.com/file/ive7i7ax6zdibv3/Screenshot_20211019_185019.png/file
>>
>>
>> cheers,
>>
>> Nigel
>>
>>
>> On 2021-10-19 5:21 p.m., Chris Zach via cctalk wrote:
>>> Sounds familiar, got a picture of the board somewhere?
>>>
>>> C
>>>
>>> On 10/19/2021 12:57 PM, Nigel Johnson Ham via cctalk wrote:
>>>> I am trying to bring up an 11/23 system in a BA23 box, and the only
>>>> memory i have is an obscure Plessey one. The only identification is
>>>> the
>>>> p/n 705920 with dash-100 in white ink. By counting the chips I make it
>>>> 4MB, but it does not respond. Since it takes the full 22-bit memory
>>>> space I can't see how any jumpers would change its accessibility. Does
>>>> anybody have a manual?
>>>>
>>>> any help appreciated,
>>>>
>>>> Nigel Johnson
>>>>