From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id aece75d7 for ; Thu, 21 Nov 2019 11:59:18 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 521C39B5BE; Thu, 21 Nov 2019 21:59:17 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 2234593DBE; Thu, 21 Nov 2019 21:58:55 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="XhW8+M8z"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 0121393DBE; Thu, 21 Nov 2019 21:58:52 +1000 (AEST) Received: from mail-qv1-f67.google.com (mail-qv1-f67.google.com [209.85.219.67]) by minnie.tuhs.org (Postfix) with ESMTPS id EA57293D9E for ; Thu, 21 Nov 2019 21:58:51 +1000 (AEST) Received: by mail-qv1-f67.google.com with SMTP id i3so1258825qvv.7 for ; Thu, 21 Nov 2019 03:58:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=NFQGzqqwceCY4ZG6JsHI8Uj2EMELoQrhaZSGRc0gtog=; b=XhW8+M8zaFXqWjPLDm3INSvONSz8j10Kx5HMFvN2QaUhN4VuFjr7LMi4obdZ7SxGwO KJF9grk8zi8oXTi7gL0fFnj5hA4i4ab/b/Ibq8nVXdnZu88slH/K6jVgEBBcruV6z0CS 4Qwp3331stMTB9293o+jK4+kdwXQX8ctNFgD6R0ALUX9842th5M2kaTgmaW/Y9OUR8h7 AHVp7diCGOKtxgxvZH9kRkf1/lKSqEq9J3RzoAwgiaj4EutMLH3nmKZ8+WJYlOTBw3xH jKLsNmvhFDXXzeSvuAlRQ+Ieble8QWoE1lgJzW85MwP18bx1RViQhDfOEJiZA/nIcj3L 9bOw== 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=NFQGzqqwceCY4ZG6JsHI8Uj2EMELoQrhaZSGRc0gtog=; b=XKvqS+4J9ruczUNY5YxGVyuTEMgEhvUYDF0JfKSaT39ykfFA1sE6E5zWJEd8+4tQqN tQnmRJEPMzIZSWQ/04VA9U7i43HtFj2VmWT3QpJFEyoRBR/AFYBPcJAtfggd1n4QZ5MO Lbfys98S+kd7RnSnikRHmbhe/5rRLjeI2qG5O+Li7ziKKE7Ea4yHstT1flUv0Nt13reP t2iEgolmwCUFLz89zOKE4JYZJrWcy4UPZB6VFh2XffJZiria2vljKasHF2AVGzayN5sX GgR9tyI6htwNlzQJLw2pLvckOoHi7aYoN6jhr7wiBGkFAETpuZho2oqR81NGRkYgOz1o J02A== X-Gm-Message-State: APjAAAUBDvfcBNvrWuxO9gJQ7JxtkmI+ixuUjFDxPhCJVSnF/MeDY3vx fr2ZfLW/A1rUijch0eLuUz4m+4iMz29yN7D8HWOtIu+7 X-Google-Smtp-Source: APXvYqy9zwtBVHPjIWo3cs8JFYCOXkrT+WzsWHDFop9JDc8pnjAzwxLaI2UNipQWgVJnn5umVEFPFZlb6zynlc/5dc0= X-Received: by 2002:a05:6214:14b2:: with SMTP id bo18mr7876046qvb.72.1574337530923; Thu, 21 Nov 2019 03:58:50 -0800 (PST) MIME-Version: 1.0 References: <86352c85-1b06-6035-de4a-5b5a64f1cf98@technologists.com> <20191106000600.GD26959@mit.edu> <479EA77E-E0A7-4B27-AEBB-42948309C03E@technologists.com> <03867014-5806-aa15-f4e4-db5fe1c376a5@bitsavers.org> In-Reply-To: <03867014-5806-aa15-f4e4-db5fe1c376a5@bitsavers.org> From: Dan Cross Date: Thu, 21 Nov 2019 06:58:38 -0500 Message-ID: To: Al Kossow Content-Type: multipart/alternative; boundary="00000000000049911f0597da0533" Subject: Re: [TUHS] AOS and IBM/RT [Re: Amdahl UTS, AIX/370, AIX/ESA 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: TUHS main list Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --00000000000049911f0597da0533 Content-Type: text/plain; charset="UTF-8" On Thu, Nov 21, 2019, 1:33 AM Al Kossow wrote: > > > On 11/5/19 11:59 PM, SPC wrote: > > > > > > Is it AOS stuff saved and available (including source code) > > un some place on the Internet? > > It was, and may still be in the afs heirarchy > I'm not going to say where, or how complete what was there is > I also seem to remember it still sat on top of an AIX microkernel > and didn't go down to bare metal. > No, that's not true. AOS was basically 4.3BSD Tahoe plus NFS and it ran on bare RT hardware. There was source code available to universities, though as I recall some bits related to memory management were missing and distributed as object files. I gathered, at the time, this was due to some obscure intellectual property reasons. People later tried to Port e.g. 4.4BSD to aging RT hardware and found it challenging because the memory subsystem was so different. But anyway, there was no hypervisor involved. - Dan C. --00000000000049911f0597da0533 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Thu, Nov 21, 2019, 1:33 AM Al Kossow <aek@bitsavers.org> wrote:


On 11/5/19 11:59 PM, SPC wrote:
>
>
> Is it AOS stuff saved and available (including source code)
> un some place on the Internet?

It was, and may still be in the afs heirarchy
I'm not going to say where, or how complete what was there is
I also seem to remember it still sat on top of an AIX microkernel
and didn't go down to bare metal.

No, that's not true. AOS was basi= cally 4.3BSD Tahoe plus NFS and it ran on bare RT hardware. There was sourc= e code available to universities, though as I recall some bits related to m= emory management were missing and distributed as object files. I gathered, = at the time, this was due to some obscure intellectual property reasons. Pe= ople later tried to Port e.g. 4.4BSD to aging RT hardware and found it chal= lenging because the memory subsystem was so different.

But anyway, there was no hypervisor involved= .

=C2=A0 =C2=A0 =C2=A0 = =C2=A0 - Dan C.

--00000000000049911f0597da0533--