2 Sep
1999
2 Sep
'99
12:23 p.m.
I remember you mentioning the PMI modification that
makes the >11/73
into an 11/83 on INFO-pdp11 a few years ago. Could you please
give
step-by-step instructions on doing that here? Does
2.11BSD have the
smarts to use this, or is it a wholly-hardware-incarnated thing? I
notice my '73 lagging a bit on memory-intensive stuff.
All it takes is a KDJ11-B, the proper memory, and the proper ordering
of the CPU and memory in the backplane. I've forgotten the exact
designation for the memory, I think it is MSV11-J or MSV11-Q..
(don't quote me... I have to check)
The memory boards are placed in the bus before the CPU... if you have
one memory board, it goes in slot 1 and the CPU in slot 2. If you
have two memory boards, they go in slots 1 and 2 and the CPU goes
in slot 3.
Use of PMI is entirely hardware-related, with no specific software
support required to enable it.
I have three machines so configured.
Megan Gentry
Former RT-11 Developer
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