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From: Rich Alderson <news@alderson.users.panix.com>
Newsgroups: alt.sys.pdp11,comp.sys.dec,vmsnet.pdp-11
Subject: Re: Y3K for PDP-11 Operating Systems
Date: 26 May 2011 16:27:00 -0400
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Rob Brown <mylastname@gmcl.com> writes:

> On Wed, 25 May 2011 at 21:20 -0400, Rich Alderson wrote:

>> Neither RSX-11S nor RSX-11M require an MMU to run, although -11M can 
>> make use of an MMU if present and SYSGEN'd to do so.

> According to the SPD for RSX-11S V2.1 (1978! the latest I found on 
> BitSavers), RSX-11S can use the MMU as well.

OK, I'm willing to believe that.  What I know about -11S is from the joint
description with -11M in an old handbook.  Since I wasn't interested in
-11S, I never researched it further than that.  -11M is the parent of -20F,
used in the front end processor (an 11/40, unmapped) of the KL-10 based
DEC-20/DEC-10.  Development work for RSX-20F is done in -11M.

-- 
Rich Alderson                                   news@alderson.users.panix.com
    the russet leaves of an autumn oak/inspire once again the failed poet/
    to take up his pen/and essay to place his meagre words upon the page...