19 Oct
2021
19 Oct
'21
5:50 p.m.
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.p…
>
>
> 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
>>>
