[TUHS] Memory mapping device used on PDP-11/20 Unix

Ron Natalie ron at ronnatalie.com
Tue Sep 20 03:22:32 AEST 2016

You have two things.   First was the 11/20 memory extension option, the MX11
and then the memory protection system the KS11.   Both came out of the DEC
CSS (the Kludge department).     I believe the MX was the same as the other
non-split I/D memory extensions (like the 34/40).   Don't know about the KS.

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