The Unix Heritage Society mailing list
 help / color / mirror / Atom feed
From: dot@dotat.at (Tony Finch)
Subject: [TUHS] Harvard and Von Neumann Architectures and Unix
Date: Mon, 27 Nov 2017 14:50:04 +0000	[thread overview]
Message-ID: <alpine.DEB.2.11.1711271445360.4416@grey.csi.cam.ac.uk> (raw)
In-Reply-To: <6b6fd55e-d1f9-5ee2-42ac-309d6b2923b3@gmail.com>

Will Senn <will.senn at gmail.com> wrote:

> In my naive understanding, the PDP-11 itself, with the Unibus and
> apparently agnostic ISA seem to summarily reject the Harvard
> Architecure...
>
> My question is - was there tension around Harvard and Von Neumann
> architectures in Unix circles and if so, how was it resolved?

Well, there were PDP-11 models with split instruction and data address
spaces, so you could address 64K of code and 64K of data without overlays.

Tony.
-- 
f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/  -  I xn--zr8h punycode
Shannon, Rockall, Malin, Hebrides, Bailey: North or northwest 5 to 7,
occasionally gale 8 except in Shannon. Rough or very rough, occasionally
moderate. Squally showers. Good.


  parent reply	other threads:[~2017-11-27 14:50 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-24 19:25 Will Senn
2017-11-24 19:28 ` Jon Steinhart
2017-11-27 14:50 ` Tony Finch [this message]
2017-11-24 21:43 Noel Chiappa
2017-11-24 21:50 ` Jon Steinhart
2017-11-25 21:55   ` William Cheswick
2017-11-25 23:15     ` Dave Horsfall
2017-11-24 22:20 ` Mike Markowski
2017-11-24 22:31   ` Dave Horsfall
2017-11-25  3:14 Doug McIlroy
2017-11-25  4:16 ` Jon Steinhart
2017-11-25  5:17   ` ron minnich
2017-11-25 14:23 ` Ralph Corderoy
2017-11-25 14:24 Noel Chiappa
2017-11-25 15:58 ` Lawrence Stewart
2017-11-25 16:10 ` Lars Brinkhoff
2017-11-25 19:59 ` Steve Simon
2017-11-25 21:59 ` Bakul Shah
2017-11-25 17:34 Doug McIlroy
2017-11-27 16:11 Noel Chiappa
2017-11-27 16:50 ` Larry McVoy
2017-11-27 17:08   ` Clem Cole
2017-11-27 18:21     ` Lawrence Stewart
2017-11-27 18:30       ` Lars Brinkhoff
2017-11-27 18:14   ` Warner Losh
2017-11-27 18:26     ` Paul Winalski
2017-11-27 17:35 ` Ian Zimmerman
2017-11-28 14:55 ` Tim Bradshaw
2017-11-28 19:45   ` Paul Winalski
2017-11-27 17:11 Noel Chiappa
2017-11-28  0:23 ` Dave Horsfall

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=alpine.DEB.2.11.1711271445360.4416@grey.csi.cam.ac.uk \
    --to=dot@dotat.at \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).