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=-1.0 required=5.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,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 d93c335f for ; Mon, 31 Dec 2018 20:07:27 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 92953AF370; Tue, 1 Jan 2019 06:07:26 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id EF8AFAF363; Tue, 1 Jan 2019 06:07:06 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=bsdimp-com.20150623.gappssmtp.com header.i=@bsdimp-com.20150623.gappssmtp.com header.b="M3jigxhX"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 724EFAF363; Tue, 1 Jan 2019 06:07:04 +1000 (AEST) Received: from mail-qk1-f170.google.com (mail-qk1-f170.google.com [209.85.222.170]) by minnie.tuhs.org (Postfix) with ESMTPS id ACE3F94140 for ; Tue, 1 Jan 2019 06:07:03 +1000 (AEST) Received: by mail-qk1-f170.google.com with SMTP id d15so1594951qkj.0 for ; Mon, 31 Dec 2018 12:07:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=LxjFOmjS2Jd4vU5IdJqMTZSB3yJ5gdS36cvDGxCKINo=; b=M3jigxhXjVGZWPAKgqJy/OhpHClbfn/kL78NzPW6OiADrWran1gDPwmCswjK0vP2A6 niPnF6Ah0tVZfbd1QATLgpAEXlYQ8mIO8QiV68SR508Og1t4hIjvfuXC/n6F/VpUGid9 Y4WDqhqjYrHzGoWNex+2yDKl1sZ9VwVkbYG290crIVxRK39NvmtGM6ijhZbIXvLQN4En xKjfgZPHqztyPr2r15Gs0GvJkUc+k/A6bZoKmBTSgXUitD70bqIum7Jth2LxRhOICG5P 3mZ/vS4oAiKhNKL+d5n/V1F3RNZBqrN02TMSDIjIYv8GTCkwWub4sRa3tS55jDV2q5td ZyrA== 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=LxjFOmjS2Jd4vU5IdJqMTZSB3yJ5gdS36cvDGxCKINo=; b=Hz5QEoVWJ0L5aL4iQjb8ozG1o6cGi4rxlC8IfxgZtQmc+hqHFVScez/i2eFVyVemQG LPEnCIKmn2C2vmdjAK9hqWiB3HqiUcbkguVlSZypDrhc7Vgc6EssVfcbyNvgJ5kMrNC9 MRL4T9bILelUQYfwNpbNehL3eRRTGhUFrUJQDcWzE+E+2XBgun8Zwr82xSi+Eue7wnU/ fnIlkH1xVuDEDf8WVRK7DygeuX8PsZK9SHvPfu2nGrLlFXOKB8W39Qw8sk2JDNNA+Njb xQwoD/lEhNXkKtXOioZfvm46QGbPi+fDTmvKTDptzxMLGRIlLLqn4RwxUrRkC2VYQS83 7gCQ== X-Gm-Message-State: AJcUukdADPoX4GhART/eeok8dYMh/Uob3hkKNsmaZyGlJOKZ9j8VvQNb DMMhQweVohk7kul/Le0yMriODPH7lD+INzY8nCdreWjd X-Google-Smtp-Source: ALg8bN6f8QRfrn+1tAfDce+tULwWgmV+EnyjGAIRtyyXkXxAcTx2v8iY9Zi+83Vyx5BgIDQ3bohydV1ENIMGJ3pmmmA= X-Received: by 2002:a37:6c05:: with SMTP id h5mr35755068qkc.175.1546286822692; Mon, 31 Dec 2018 12:07:02 -0800 (PST) MIME-Version: 1.0 References: <20181231183804.71A6618C073@mercury.lcs.mit.edu> In-Reply-To: <20181231183804.71A6618C073@mercury.lcs.mit.edu> From: Warner Losh Date: Mon, 31 Dec 2018 13:06:50 -0700 Message-ID: To: Noel Chiappa Content-Type: multipart/alternative; boundary="000000000000c9ade8057e56f4fb" Subject: Re: [TUHS] Upgrading from 11/40 to 11/45 in Unix v6 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" --000000000000c9ade8057e56f4fb Content-Type: text/plain; charset="UTF-8" On Mon, Dec 31, 2018, 1:38 PM Noel Chiappa > From: Paul Winalski > > > What is magic number 0411? That one I've never heard of before. > > It's a PDP-11-ism. Separate I+D. > Venix/86, a v7 sys iii hybrid that ran on 8086/286 also uses it for basically the same thing... its compiler was limited to one 64k code segment and one 64k data / stack segment. The syscall interface depends on this quirk as well... Warner > --000000000000c9ade8057e56f4fb Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


= On Mon, Dec 31, 2018, 1:38 PM Noel Chiappa <jnc@mercury.lcs.mit.edu wrote:
=C2=A0 =C2=A0 > From: Paul Winalski

=C2=A0 =C2=A0 > What is magic number 0411?=C2=A0 That one I've never= heard of before.

It's a PDP-11-ism. Separate I+D.

Venix/86, a v7 sys iii hybrid that ra= n on 8086/286 also uses it for basically the same thing... its compiler was= limited to one 64k code segment and one 64k data / stack segment. The sysc= all interface depends on this quirk as well...

<= /div>
Warner
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