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, MAILING_LIST_MULTI,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 25499 invoked from network); 1 May 2023 18:12:11 -0000 Received: from minnie.tuhs.org (2600:3c01:e000:146::1) by inbox.vuxu.org with ESMTPUTF8; 1 May 2023 18:12:11 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id AA43F402D3; Tue, 2 May 2023 04:12:05 +1000 (AEST) Received: from mx1.mythic-beasts.com (mx1.mythic-beasts.com [IPv6:2a00:1098:0:86:1000:0:2:1]) by minnie.tuhs.org (Postfix) with ESMTPS id 5773B402CE for ; Tue, 2 May 2023 04:11:47 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=quintile.net; s=mythic-beasts-k1; h=To:Subject:Date:From; bh=diwX1hoFRqAtNvPFpftW+P1831INd/YLhpphrMUnbyk=; b=dP1vPR77mVkrzAiNDS3GI8FEZQ szTWwdGmQiAE1HHv0rdrkbUX/ivFSOUjHZjzOjAtRYOCkq5x03QtO2Q6lGUtlb/ijEko2QnaLmcHA TR64g5/xUfCKsfTT8FW0hT1QLcWktP0rUpNk5rAvp3NHha76E7ZM21wznmdgR9qTngNwERvrg3BtO BbTk4eu1XLvj+SPvh8O+Xo+FmkfGi7zq/OcmvzbrydvXfwWbzNLsXOrtjrpkZ8v4EA9s7840RGwjB Y1H7eGlccyD0G/iJK5F4gzdxluARdyif+VFE+tLcG1ZARb5Mnsw3Z61TRdGTmTuidPE/T1/2l0nBS eIbzz/2A==; Received: by mailhub-cam-d.mythic-beasts.com with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1ptY00-00EBiQ-UI for tuhs@tuhs.org; Mon, 01 May 2023 19:11:45 +0100 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable From: Steve Simon Mime-Version: 1.0 (1.0) Date: Mon, 1 May 2023 19:11:31 +0100 Message-Id: To: tuhs@tuhs.org X-Mailer: iPhone Mail (20E252) X-BlackCat-Spam-Score: 19 Message-ID-Hash: BZZAD5B3GSWVN7LS2WJWEAVA24PYUYL3 X-Message-ID-Hash: BZZAD5B3GSWVN7LS2WJWEAVA24PYUYL3 X-MailFrom: steve@quintile.net X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; 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: UNIX "Machine Layer" List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: =E2=80=9Csoldering iron=E2=80=A6=E2=80=9D i do remember the fun of changing the baud rate of an async line on the Hone= ywell level 66 mainframe at college. This required shutting the whole machin= e down, removing one of the cards, and the (very careful) use of a wire wrap= tool. -Steve