From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: tuhs-bounces@minnie.tuhs.org X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE, T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.1 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id 88f546ca for ; Sun, 24 Jun 2018 14:42:22 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 5DC2EA187A; Mon, 25 Jun 2018 00:42:21 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 07B6A9EDE9; Mon, 25 Jun 2018 00:41:48 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=serissa.com header.i=@serissa.com header.b=NZcg7FPZ; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.b=Ln28sS9w; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id C75009EE0C; Mon, 25 Jun 2018 00:41:45 +1000 (AEST) Received: from out2-smtp.messagingengine.com (out2-smtp.messagingengine.com [66.111.4.26]) by minnie.tuhs.org (Postfix) with ESMTPS id BF1DC9EDE9 for ; Mon, 25 Jun 2018 00:41:44 +1000 (AEST) Received: from compute7.internal (compute7.nyi.internal [10.202.2.47]) by mailout.nyi.internal (Postfix) with ESMTP id E5E5420A8B; Sun, 24 Jun 2018 10:41:43 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute7.internal (MEProxy); Sun, 24 Jun 2018 10:41:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=serissa.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-sender :x-me-sender:x-sasl-enc; s=fm3; bh=KokXDnI0yQLKVYQ1N3wvonmSm0vZ/ rNe/T6J0uFpnro=; b=NZcg7FPZF0NnvIUTlP9mNFN1SMuEEUO5rQK0yqtPYfDfk MzAtem25x7T3ocd8xr80kv19TI8sM/IviYYvhRMFXpkpIVMJ9AKQzcNQZvDNo70Q wJCxqck4gkP0KIyOf4w3QfyDTOB06dbBkVZ0g9pmnzMSEnS8VtEEkANORsJ1e4p9 ADy9oi+tWD/bjb9Imt2Tzmh+qcq0flc35Cw63Skm++T3+ebRoMxC+1q9TivMzoi/ lNeeOmfXzD3qrPGNDHwei/R+GFYZDf4ncuUyowm8w2Wx66Mxtqh6RQHslLtVtSdv YWYtdPd+bqmwDS+jRUQq1HY9MqbrXl37pzvyMC6qg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=KokXDn I0yQLKVYQ1N3wvonmSm0vZ/rNe/T6J0uFpnro=; b=Ln28sS9wcjjzaVJ9SsPSuk 4ePMCAKJ1lV+vk7i1L9l1yNk5yZP7bLSoMH5rYj1h89yS2EyGwfAN+DoRQiovgL/ BPJHLdVN8WHHUoF9tJFS8jj64hUhqMas9chEzFEvX0Bf8iOWxXQPjJqwVntt/jyz CKNue21az3d4MMZCSD+d3WFAOdAIHVuELDQ6FeFglH9FSUSeR0cu643N8uvOhzvb yjjhwwAvVyGWmnLHF3zlroI191tKGym+UTEi2qPf1mGYDEAJC4G/VNcJ55q2TsYP ChO0R6NtsTMjlU/gge7YNrbRfPY9vgIfNEwnWuglc9IRFe0uLOMMW1vL5kXR36Ig == X-ME-Proxy: X-ME-Sender: Received: from kailua-display.stewart.org (pool-96-230-92-61.bstnma.fios.verizon.net [96.230.92.61]) by mail.messagingengine.com (Postfix) with ESMTPA id 87ADDE4117; Sun, 24 Jun 2018 10:41:43 -0400 (EDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.4 \(3445.8.2\)) From: Lawrence Stewart In-Reply-To: Date: Sun, 24 Jun 2018 10:41:42 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <07BD6DF6-66B3-4EF3-B3B0-F2E2EBB3A209@serissa.com> References: <20180624031454.4F9484422F@lignose.oclsc.org> To: Paul Winalski X-Mailer: Apple Mail (2.3445.8.2) Subject: Re: [TUHS] Old mainframe I/O speed (was: core) X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tuhs@tuhs.org Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" > On 2018, Jun 24, at 9:03 AM, Paul Winalski = wrote: >=20 > On 6/23/18, Norman Wilson wrote: >> Ron Minnich: >>=20 >> Jon Hall used to love telling the story of the VAX backplane with = the >> glue >> in the board slots, which clever customers managed to damage and = have >> repaired with a non-glued-up backplane. >=20 > That was the VAXstation-11/RC. Marketing wanted a VAXstation with > fewer backplane slots that it could sell at a cheaper price. Rather > than manufacture a different board, they just filled the extra > backplane slots with glue to render them unusable. "RC" officially > stood for "restricted configuration", but we in Engineering called it > "resin caulked". >=20 > -Paul W. Some customers of the 11/RC figured out how to buy the full backplane as = =E2=80=9Cspare parts=E2=80=9D which worked for a while. Every industry with up-front R&D or capital costs has the problem that = the marginal cost of goods is much lower than the average cost. It = happens to airlines, chip companies, system companies and especially = commercial software companies. Trying to introduce product = differentiation is one solution. Glue or microcode NOPs or DRM licence = unlock codes work, but they tend to damage your reputation. -L=