3 Jun
2016
3 Jun
'16
8:58 a.m.
On 03/06/2016 16:43, Jerome H. Fine wrote:
Hi its a KDJ11-B all memory on CPU board
Rod
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