Speaking of 11/73s

From: Megan <mbg_at_world.std.com>
Date: Thu Sep 2 19:23:39 1999

> 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

| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
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Received on Thu Sep 02 1999 - 19:23:39 BST

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