From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: from minnie.tuhs.org (minnie.tuhs.org [IPv6:2600:3c01:e000:146::1]) by inbox.vuxu.org (Postfix) with ESMTP id 88E4C22874 for ; Fri, 6 Dec 2024 03:29:44 +0100 (CET) Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 16E5642780; Fri, 6 Dec 2024 12:29:41 +1000 (AEST) Received: from mail-ed1-x529.google.com (mail-ed1-x529.google.com [IPv6:2a00:1450:4864:20::529]) by minnie.tuhs.org (Postfix) with ESMTPS id 1D6FD4277F for ; Fri, 6 Dec 2024 12:29:37 +1000 (AEST) Received: by mail-ed1-x529.google.com with SMTP id 4fb4d7f45d1cf-5d0c098c870so2906990a12.1 for ; Thu, 05 Dec 2024 18:29:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1733452175; x=1734056975; darn=tuhs.org; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=0gvjYJUGjMjvdWhIbDDRRZrLPBOWjnc4KMQMf1MdJlY=; b=ZkzO5aFk7p50z1oRHS4oISsOFaqxViE+OgoFPSTeJy+GWLBlWHyPsBh9XW9EieT9Kr EwNyq3U5N/2uIsOWjvkP83Hi1G2DX8IlYEIi3CzYKc5RmQpio3peIOwu3C350+iL6IkU pyeY6o+sCVZnHnsTKcLSlr+7fazUzqvgH32jrCrZCUogH4fQSGFYegJLUcIrvSM9OeBM B7uct12WZ/aphDrAaYLvRM+/Rv/zhzHigESLAM/BRRqUONjaTrO6EDL43OP0th8bGWt6 +enQWIlGmyAJKRQ2qZsKoohkM2VyrseS60zvxMdCrbaEItgj7OfOQpn3au94gXX39HsR MeZw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733452175; x=1734056975; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=0gvjYJUGjMjvdWhIbDDRRZrLPBOWjnc4KMQMf1MdJlY=; b=k727Z/08ZXi1HNqxcikOBf2vqfsabErd8mnxmlbcYeoQlKr/7tDJdiTedTd4D6x7lS c3J7R1S095CEkkwU2ERdq/khXn8aZfar5qaNMC+GY4bIbLt9jSCG/JT7/5hftjNiAX8k ne+xdBUHFnIFSfKYGgFGRG8llgEh36H42C7Kv+10WobqDyy4dEORgc1vzdmyIfS9CS7V m+0TuCucS9i3zHWyTQBWq5VxS/+CwX8/3ll/CgV6ebHhACuInXkv1CtG61DZYvFWDUWw N/CXDoebteNI5Rsw1Ny6hzjs20KFTgycQtABBFS8/HHAi5y17mcILNyDAyFZPbbYz/th O7Qw== X-Forwarded-Encrypted: i=1; AJvYcCXQG5NmPwRrKoFPGxEayOYeqYj0xAJcLj15KOS76G0EzXrXdc6W12LRGQA5cOSIQ3+0dAuA@tuhs.org X-Gm-Message-State: AOJu0YxSZpvPl7k257afaNb1JzS8ZnzFqPr9+tAobI/6AvBiry/WjzDe XfD6oQ0solWTogebHxOhtVGgUo0JNu0n7zUxgyS6V6SQqjQw7IkNglqIX+aBR5w0IGYfA/GSo/I pEOoaC53YuNV0hwlYrQrEAH07pR96/g== X-Gm-Gg: ASbGncvZbV/Zg9Be4VOjvChKx+swjmq/gNM6C5vGgoM7x3XX6wQzb78cd9/vfPElF8m AzSgXldUG1qRHJNqRN7MZEdIzNHfm8KUtvTlW X-Google-Smtp-Source: AGHT+IHHjJRgGb64ETYa9bm2QGQvVfaNGLn6Yspj7a6siRmBSpkDZXPO6NG2l5x8bbyBZdzUoSMEOODtXTHEr44iqyM= X-Received: by 2002:a05:6402:4406:b0:5d0:b1c4:7081 with SMTP id 4fb4d7f45d1cf-5d3bd6479d4mr1507141a12.4.1733452175101; Thu, 05 Dec 2024 18:29:35 -0800 (PST) MIME-Version: 1.0 References: <568FD44F-01FB-441B-846B-7D42C3A8E1FB@canb.auug.org.au> <20241205030843.8552FAB1EDA5@ary.qy> <32bf4263-277d-8c8b-6bf7-e33df04a2c3c@taugh.com> In-Reply-To: From: Adam Thornton Date: Thu, 5 Dec 2024 19:29:24 -0700 Message-ID: To: Ron Natalie , The Eunuchs Hysterical Society Content-Type: multipart/alternative; boundary="00000000000021d5ac062890c9e2" Message-ID-Hash: 7YDS37QXQQ33Y2P5UC6YJKSW3PRWLYYX X-Message-ID-Hash: 7YDS37QXQQ33Y2P5UC6YJKSW3PRWLYYX X-MailFrom: athornton@gmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Pipes (was Re: After 50 years, what has the Impact of Unix been?) List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: --00000000000021d5ac062890c9e2 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable /23+, no? The basic 23 doesn't have an MMU, I'm pretty sure. On Thu, Dec 5, 2024 at 11:58=E2=80=AFAM Ron Natalie wr= ote: > I remember on MiniUnix (a stripped down kernel that would run on PDP11=E2= =80=99s > without memory management, in our case 11/03, 11/20, and an older 11/40) > there were no kernel pipes (and limited process concurrency). > The shell used the aforementioned emulation of pipe by just running the > output of one process into a temporary file subsequently loaded as stdin > of the other. > > We kind of put all that to bed when the 11/23s came out and we could run > our full up kernel on the micros. > > --00000000000021d5ac062890c9e2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
/23+, no?=C2=A0 The basic 23 doesn't = have an MMU, I'm pretty sure.

On Thu, Dec 5, 2= 024 at 11:58=E2=80=AFAM Ron Natalie <ron@ronnatalie.com> wrote:
I remember on MiniUnix (a stripped down kernel that wo= uld run on PDP11=E2=80=99s
without memory management, in our case 11/03, 11/20, and an older 11/40) there were no kernel pipes (and limited process concurrency).
The shell used the aforementioned emulation of pipe by just running the output of one process into a temporary file subsequently loaded as stdin of the other.

We kind of put all that to bed when the 11/23s came out and we could run our full up kernel on the micros.

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