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,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 5803 invoked from network); 15 Aug 2020 03:07:49 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 15 Aug 2020 03:07:49 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 19ED69DFB8; Sat, 15 Aug 2020 13:07:48 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id C1B369B5EC; Sat, 15 Aug 2020 13:07:08 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="key not found in DNS" (0-bit key; unprotected) header.d=humeweb.com header.i=@humeweb.com header.b="J8BVwrhC"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 5F2A39B5EC; Sat, 15 Aug 2020 13:07:05 +1000 (AEST) X-Greylist: delayed 1266 seconds by postgrey-1.36 at minnie.tuhs.org; Sat, 15 Aug 2020 13:07:04 AEST Received: from gateway1.unifiedlayer.com (gateway1.unifiedlayer.com [74.220.221.221]) by minnie.tuhs.org (Postfix) with ESMTPS id 2EE779B5D7 for ; Sat, 15 Aug 2020 13:07:04 +1000 (AEST) Received: from cm3.websitewelcome.com (unknown [108.167.139.23]) by gateway1.unifiedlayer.com (Postfix) with ESMTP id A800E200A1C99 for ; Fri, 14 Aug 2020 21:45:57 -0500 (CDT) Received: from dallas136.arvixeshared.com ([23.91.70.4]) by cmsmtp with ESMTP id 6mCjkXsXzKgzS6mCjk20UZ; Fri, 14 Aug 2020 21:45:57 -0500 X-Authority-Reason: nr=8 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=humeweb.com ; s=default; h=To:References:Message-Id:Content-Transfer-Encoding:Cc:Date: In-Reply-To:From:Subject:Mime-Version:Content-Type:Sender:Reply-To:Content-ID :Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To: Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe :List-Post:List-Owner:List-Archive; bh=GErTGy4vQtALdE4TaVSYoxefT5lFVswxQTZpOK4L8gE=; b=J8BVwrhCpNqZpt+TBQXyy/rAX+ rbWfylETl7vLw2x7txv/lcsw8xi78r9wf3WDhfZRB1kyxIxS3W3WqPcKVkzoEauvlygGIQ5vy53E5 +oHHyyUPSZtMgvYjJRGSHSudXGQt8ET+TC5bVhmT6Xsor9FWsgJ+30xfBQ0LRb0rlUXk=; Received: from 99-98-248-85.lightspeed.irvnca.sbcglobal.net ([99.98.248.85]:57702 helo=[192.168.2.77]) by dallas136.arvixeshared.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from ) id 1k6mCj-001rij-9s; Fri, 14 Aug 2020 21:45:57 -0500 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.80.23.2.2\)) From: Andrew Hume In-Reply-To: Date: Fri, 14 Aug 2020 19:45:56 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: <176D143B-8C1A-4CAB-94E9-5433DBE7E4A6@humeweb.com> References: <202008141739.07EHdn2U1381389@darkstar.fourwinds.com> <4F69D0BB-C6C8-443C-A5A2-0F0C1E5578B0@cfcl.com> To: Dave Horsfall X-Mailer: Apple Mail (2.3608.80.23.2.2) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - dallas136.arvixeshared.com X-AntiAbuse: Original Domain - tuhs.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - humeweb.com X-BWhitelist: no X-Source-IP: 99.98.248.85 X-Source-L: No X-Exim-ID: 1k6mCj-001rij-9s X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 99-98-248-85.lightspeed.irvnca.sbcglobal.net ([192.168.2.77]) [99.98.248.85]:57702 X-Source-Auth: andrew@humeweb.com X-Email-Count: 1 X-Source-Cap: YWh1bWU7YWh1bWU7ZGFsbGFzMTM2LmFydml4ZXNoYXJlZC5jb20= X-Local-Domain: yes 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" not on the cyber 72 we shared, dave. it was, in fact, a length of wire. the 72 had one length, and the 76 had a shorter length. (i guess you could call that a sort-of timing capacitor?) i watched a cyber technician change the wires for the purposes of doing a verification test. > On Aug 14, 2020, at 7:02 PM, Dave Horsfall wrote: >=20 > On Fri, 14 Aug 2020, Rich wrote: >=20 >> On a vaguely related note, I found it amusing that there was a well = known hack for Cray's (or perhaps 6600's) which were misbehaving: put a = Tektronix scope probe on a test point that generally had one there = during final system checkout. The load (extremely mnimal by design) was = just enough to stabilize the system. >=20 > There was also the story about the major difference between a Cyber 72 = and a Cyber 73 was just a timing capacitor... Very expensive capacitor = :-) >=20 > -- Dave