From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HTML_MESSAGE,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 26030 invoked from network); 20 Jul 2020 17:26:32 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 20 Jul 2020 17:26:32 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 7B0CA9BA51; Tue, 21 Jul 2020 03:26:31 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 3D4759BA50; Tue, 21 Jul 2020 03:24:59 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=ccil-org.20150623.gappssmtp.com header.i=@ccil-org.20150623.gappssmtp.com header.b="RX/SBdxV"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 615CD9BA36; Tue, 21 Jul 2020 03:24:33 +1000 (AEST) Received: from mail-qk1-f178.google.com (mail-qk1-f178.google.com [209.85.222.178]) by minnie.tuhs.org (Postfix) with ESMTPS id F08AC9BA32 for ; Tue, 21 Jul 2020 03:24:31 +1000 (AEST) Received: by mail-qk1-f178.google.com with SMTP id d14so4463596qke.13 for ; Mon, 20 Jul 2020 10:24:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ccil-org.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=LenFKEIAQdJM5XWTKBhHWgD2FP4D3mScA9V3z1McdpY=; b=RX/SBdxVbdgvRypt+QpvtXBkuCGZgtDUC3lRhd9W40qTLt6EAr6bBgROXPD2e4ujUv KdMis74odlgPE7F4REgLChXpdeAHionlkwIIZObKj5EkPbYWLOGhbt6gOtOKJdNA7bKM 40ziR60gkzlZlGXrqpPtbhD+2Bxg8LEahzk/6r2cnEhJnH6YuCmGudsDjZuoYU0QNOce 2hHnPhAYZYRwdhF8r2mKc+fZvZFACIJsrnCg+qgHinaZlW9/TrOOpjptiYVE6e03my+S Db/dIYOMldR0OopHfvA87cO7L8OE1KwoXKW4hG+baOX9wWvRd4RYBls3KdlYr7bW/g/M jH8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=LenFKEIAQdJM5XWTKBhHWgD2FP4D3mScA9V3z1McdpY=; b=Sh4hTWX1Zfa90qVKhPufvk0b7+YYQhaF0hGXBF9746XUEmGadNH5ihcEhGWWU/6ZEC F3X9hnSY/mHfYyZZQVVeMuoYb41xIK8v22BgazLIHInF0lNP7T006jZRbwqt2uLTr+zm EgfnIo3Tqdld09TwzXH1/J2cmyW4gOihsEP5a4yPEK0W04HclUDAG/JV1/E3Vr3otLSg 7v3ULfcT6fs9vtQTPM1nEp0TmUQ4MtCutnN6LapSxesG3LbzmKX/OPRFuihmImguJlvQ 1bwmkSIina+5/5H5gEmho1IBkWsuFkDklc/FIsORqzWUxNZS953a3H3tzRAR3wyMfFS0 f/Lg== X-Gm-Message-State: AOAM533TIzgdjrhsiUll7UUFe5VOQt8IBI09/vcQ5/Z+oH1ZgOeMOlpD EV86r9/GHxJ+/6Cs5BYQ5kyFWbCzr0YQWdE4ofoH9g== X-Google-Smtp-Source: ABdhPJyc9Zdtaw0d7kTeRxl+DMlJJVQzqFK1MNb+5GTVRH4UIRSSwnrXyfxI47X5DSry1LGOBR9rHk3T8zSoWj+KCXs= X-Received: by 2002:a37:7803:: with SMTP id t3mr22813737qkc.358.1595265871170; Mon, 20 Jul 2020 10:24:31 -0700 (PDT) MIME-Version: 1.0 References: <77c0536b-87b8-44dd-96fd-76d8ceba30f2@localhost> <2135afdb-db52-05d2-9af6-24ad36367db3@tnetconsulting.net> <40a70393-894a-4b21-8678-a71bbca4aa69@localhost> <8e7efd45-a84e-cf20-9d30-8222357596a3@tnetconsulting.net> <202007200847.06K8l8DF026646@freefriends.org> <20200720114957.GL26294@mcvoy.com> In-Reply-To: <20200720114957.GL26294@mcvoy.com> From: John Cowan Date: Mon, 20 Jul 2020 13:24:20 -0400 Message-ID: To: Larry McVoy Content-Type: multipart/alternative; boundary="00000000000092da8405aae2c785" Subject: Re: [TUHS] A/UX [was Linux is on-topic] X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --00000000000092da8405aae2c785 Content-Type: text/plain; charset="UTF-8" On Mon, Jul 20, 2020 at 7:51 AM Larry McVoy wrote: > This isn't quite the same but Victor Yodaiken wrote a real time kernel > that ran all of Linux as a user process. The Bell Labs MERT system did almost the same thing: its low-priority process was a Unix emulator along the lines of MS WSL 1. See < https://en.wikipedia.org/wiki/Multi-Environment_Real-Time> for basics and links. Similarly, the PDP-8's modular real-time system RTS/8 had a symbiotic relationship with OS/8, the single-user operating system; you programmed and built instances of RTS/8 under OS/8 and then booted them, but if you had enough memory, you could include the OS8 [sic] task in the RTS build and it would run OS/8 as the lowest priority task. John Cowan http://vrici.lojban.org/~cowan cowan@ccil.org This great college [Trinity], of this ancient university [Cambridge], has seen some strange sights. It has seen Wordsworth drunk and Porson sober. And here am I, a better poet than Porson, and a better scholar than Wordsworth, somewhere betwixt and between. --A.E. Housman --00000000000092da8405aae2c785 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


=
On Mon, Jul 20, 2020 at 7:51 AM Larry= McVoy <lm@mcvoy.com> wrote:
<= /div>
=C2=A0
This isn't quite the same but Victor Yodaiken wrote a real time kernel<= br> that ran all of Linux as a user process.

Th= e Bell Labs MERT system did almost the same thing: its low-priority process= was a Unix emulator along the lines of MS WSL 1.=C2=A0 See <https://en.wikip= edia.org/wiki/Multi-Environment_Real-Time> for basics and links.

Similarly, the PDP-8's modular real-time system R= TS/8 had a symbiotic relationship with OS/8, the single-user operating syst= em; you programmed and built instances of RTS/8 under OS/8 and then booted = them, but if you had enough memory, you could include the OS8 [sic] task in= the RTS build and it would run OS/8 as the lowest priority task.



John Cowan =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0http://vrici.lo= jban.org/~cowan =C2=A0 =C2=A0 =C2=A0 =C2=A0cowan@ccil.org
This great college [Trinity], of this ancient u= niversity [Cambridge],
has seen some strange sights. It has seen Wordswo= rth drunk and Porson
sober. And here am I, a better poet than Porson, an= d a better scholar
than Wordsworth, somewhere betwixt and between. =C2= =A0--A.E. Housman
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