PDP-11/94-E

[Rod Smallwood]

On 03/06/2016 16:43, Jerome H. Fine wrote:
> >Rod Smallwood wrote:
>
>> [Snip]
>>
>> 4.  I have what I believed is a working 11/83 in my computer room
>>
>> 5 . I'm going to try my processor in there and yes I know about PMI 
>> and  the backplane.
>
> Just a bit of information from what I seem to remember - I hope
> the information is correct.
>
> The M8190-BF board I have supports:
> (a) PMI memory placed ABOVE the CPU
> (b) Non-PMI memory placed BELOW the CPU (I never
>     attempted to place non-PMI memory ABOVE the
>     CPU)
> (c)  When the PMI memory was placed into the backplane
>       BELOW the CPU, then the memory would act as
>      normal non-PMI memory.
>
> Under RT-11, the command:
>
> SHOW  CONFIG
>
> will conclude that the following CPU is present:
>
> (a)  PDP-11/83
> (b)  PDP-11/73
> (c)  PDP-11/73
>
> So other than when PMI memory is placed BELOW the CPU
> as in (c) and it therefore takes longer to access the memory, I don't
> think the question of PMI memory will really make any difference.
>
> Jerome Fine
Hi its a KDJ11-B all memory on CPU board

Rod