From: Rudi Blom <rudi.j.blom@gmail.com>
To: tuhs <tuhs@minnie.tuhs.org>
Subject: [TUHS] Any oldtimers remember anything about the KS11 on the 11/20?
Date: Sun, 23 Jun 2019 09:37:19 +0700 [thread overview]
Message-ID: <CAMYpm87WDShNVfhGMnJEAFMoO8xnioaF+TqROpsYjrV55eDMyQ@mail.gmail.com> (raw)
Probably already known, but to be sure
Interesting options: MX11 - Memory Extension Option: this enabled the
usage of 128 KW memory (18-bit addressing range); KS11: this option
provided hardware memory protection, which the plain /20 lacked. Both
options were developed by the Digital CSS (Computer Special Systems).
http://hampage.hu/pdp-11/1120.html
PS the page listed below has a very nice picture of the 'two fathers
of UNIX" working on a PDP-11/20
http://hampage.hu/unix/unix1.html
next reply other threads:[~2019-06-23 2:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-23 2:37 Rudi Blom [this message]
2019-06-23 12:16 ` Ron Natalie
2019-06-23 22:01 Noel Chiappa
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