Rod Smallwood rodsmallwood52 at btinternet.com
Fri Jun 3 10:58:11 CDT 2016

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:
> 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


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