What is the KH11-A? (was Re: Differences between the PDP-11/15 and PDP-11/20)

[Ethan Dicks]

On Mon, Aug 22, 2016 at 8:49 AM, Noel Chiappa <jnc at mercury.lcs.mit.edu> wrote:
>     > I recall reading _somewhere_ about some early PDP-11 memory management
>     > thing used on early PDP-11 Unix that supported the KE11 ... by having a
>     > small window that allowed user code access to the KE11. ...
>     > Does this ring any bells for anyone?
>
> Never mind - found it, it was in "Odd Comments and Strange Doings in Unix":
>
>   https://www.bell-labs.com/usr/dmr/www/odd.html

Ah... I have read that before, but I glossed over the anectode about
the KE11 and KS11.  All makes sense now.

> The memory management thing in question was the KS11; I looked, but could not
> find anything about it. Does anyone know of anything?

Nope. But I'm intrigued now.

-ethan