5 Aug
2008
5 Aug
'08
8:37 a.m.
2008/8/5 Brian L. Stuart <blstuart at bellsouth.net>:
Probably doesn't count as a bona fide MMU, but I remember reading
something about an add-on for the 11/20 which did kernel/user memory
protection. IIRC it was called the KS11 and was some kind of special
order option, so there probably weren't that many made. Could it be
that that's what you were shown?
--
Steve Maddison
http://www.cosam.org/
And AFAIK
there is no MMU for the PDP11/20 (the first PDP11
Not as a product. However, lo these many years ago (neigh
on to 3 decades), I was shown an object that consisted of
numerous DEC modules and told that it was one of three MMUs
that had been built for the 11/20.