From owner-freebsd-hardware@FreeBSD.ORG Thu Jul 24 13:47:27 2008 Return-Path: Delivered-To: hardware@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 97C921065677 for ; Thu, 24 Jul 2008 13:47:27 +0000 (UTC) (envelope-from jhs@berklix.org) Received: from flat.berklix.org (flat.berklix.org [83.236.223.115]) by mx1.freebsd.org (Postfix) with ESMTP id 1E2C28FC1B for ; Thu, 24 Jul 2008 13:47:26 +0000 (UTC) (envelope-from jhs@berklix.org) Received: from js.berklix.net (p549A5E57.dip.t-dialin.net [84.154.94.87]) (authenticated bits=0) by flat.berklix.org (8.13.8/8.13.8) with ESMTP id m6ODHZEC031348; Thu, 24 Jul 2008 15:17:37 +0200 (CEST) (envelope-from jhs@berklix.org) Received: from fire.js.berklix.net (fire.js.berklix.net [192.168.91.41]) by js.berklix.net (8.13.8/8.13.8) with ESMTP id m6ODHPwj045243; Thu, 24 Jul 2008 15:17:26 +0200 (CEST) (envelope-from jhs@berklix.org) Received: from fire.js.berklix.net (localhost [127.0.0.1]) by fire.js.berklix.net (8.13.8/8.13.8) with ESMTP id m6ODHA80093562; Thu, 24 Jul 2008 15:17:15 +0200 (CEST) (envelope-from jhs@fire.js.berklix.net) Message-Id: <200807241317.m6ODHA80093562@fire.js.berklix.net> To: hardware@freebsd.org From: "Julian Stacey" Organization: http://berklix.com BSD Linux Unix Consultancy, Munich Germany. User-agent: EXMH on FreeBSD http://berklix.com/free/ X-URL: http://berklix.com/~jhs/cv/ Date: Thu, 24 Jul 2008 15:17:10 +0200 Sender: jhs@berklix.org Cc: Michael Elbel , Gary Jennejohn Subject: Voltages on older PCs X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jul 2008 13:47:27 -0000 Hi hardware@ (cc Gary & Michael) Comment welcome before I return a FreeBSD-7.0 host to service, (taken away for analysis after it fell off line a few times). I've long since rebuilt world, (still 7.0-REL), & built a few needed ports/, but much reduced ports/ than before, Many less auto start processes load from local/etc/rc.d & especially, no mailman, (cos I've seen thrashing from mailman on FreeBSD before). I'd checked temps long since too, with a real probe, not BIOS, they're OK (& the normal remote site has good power & very cool ) Checked Volts last night (Yes AT style 2 adjacent 6 pin connectors): PIN COLOUR NOMINAL Slim Test P9.[4-6] Red +5 +5.14V +5~ P9.3 Green -5 +0.282V -5~ P8.[56] P9.[12] Black 0 - - P8.4 Blue -12 -11.94V 0.56 P8.3 Yellow +12 +11.9V +12.3 P8.2 Purple +5 +5.11V +5 P8.1 Grey ? +2.4V +5 Notes: P8.1: OTS book says: "Power Good" but no V. is specified. Slim: The remote server in question Test: For comparison: Open frame pentium I test cards with. I recall some old PCs needed an extra negative (-5 or -12 ?), for RAM refresh, (& another also -12 for proper RS232, though rarely if ever did PCs use more than 0/5 on cua/tty, thus not Real RS232), but that some negatives got abandoned on some m. boards as no longer needed (I think refresh requirements changed). Curious thing is these 2 boards both run, but with different low voltage pins. Can anyone cast insight ? If not, I'm inclined to shrug & return server to service (where it's largely a backup anyway, not domain critical). Thanks for any insight, Cheers, Julian -- Julian Stacey: BSDUnixLinux C Prog Admin SysEng Consult Munich www.berklix.com Mail plain ASCII text. HTML & Base64 text are spam. www.asciiribbon.org