From owner-freebsd-smp Tue Mar 16 19:53:39 1999 Delivered-To: freebsd-smp@freebsd.org Received: from palrel1.hp.com (palrel1.hp.com [156.153.255.242]) by hub.freebsd.org (Postfix) with ESMTP id 159BE1525F for ; Tue, 16 Mar 1999 19:52:55 -0800 (PST) (envelope-from darrylo@sr.hp.com) Received: from srmail.sr.hp.com (srmail.sr.hp.com [15.4.45.14]) by palrel1.hp.com (8.8.6/8.8.5tis) with ESMTP id TAA18891; Tue, 16 Mar 1999 19:52:23 -0800 (PST) Received: from mina.sr.hp.com by srmail.sr.hp.com with ESMTP (1.37.109.16/15.5+ECS 3.3) id AA189202737; Tue, 16 Mar 1999 19:52:17 -0800 Received: from localhost (darrylo@mina.sr.hp.com [15.4.42.247]) by mina.sr.hp.com with ESMTP (8.8.6 (PHNE_14041)/8.7.3 TIS 5.0) id TAA09370; Tue, 16 Mar 1999 19:52:16 -0800 (PST) Message-Id: <199903170352.TAA09370@mina.sr.hp.com> To: Bob Willcox Cc: John Preisler , freebsd-smp@FreeBSD.org Subject: Re: celeron smp hack Reply-To: Darryl Okahata In-Reply-To: Your message of "Sat, 13 Mar 1999 16:49:51 CST." <19990313164951.A41414@luke.pmr.com> Mime-Version: 1.0 (generated by tm-edit 1.1.1.1) Content-Type: text/plain; charset=US-ASCII Date: Tue, 16 Mar 1999 19:52:16 -0800 From: Darryl Okahata Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Bob Willcox wrote: > On Wed, Mar 10, 1999 at 11:52:27PM -0800, Darryl Okahata wrote: > > > That's the hard way. For the easier way, see the various dual > > celeron articles at: > > > > http://www.cpu-central.com/ > > Our preference would have been to do it the easier way (with the MSI > converter boards), but he was unable to locate any within the timeframe > that we would have needed them so we modified the slot 1 processor > boards. I've also heard that there are converter boards available with > jumpers to effect the change, though I've never seen them or anyplace > claiming to have them so they may not exist. A co-worker did the slot-1 modification (where you have to drill a hole). It works, but he's had problems with wires breaking (he had to solder a wire near the edge connector pins, and that wire is constantly breaking off -- the top of the motherboard socket can hit the wire and knock it loose). I did the socket-370-to-slot-1 modification, and it's easier -- no drilling, and just one wire to solder. I don't have any problems with breaking wires. However, the adapters I have use tin plated edge connectors, and so I may have oxidation problems later on; it works, though, and I'll look to replace them with gold-plated adapters someday. The soldering was tricky, though, due to the small wire and pads. You'll need a very fine-tipped soldering iron, at least, and a stereo microscope or magnifier (one of those circular fluorescent lamps with a huge magnifier in the middle) will make things much easier. You'll need very good eyes, otherwise. -- Darryl Okahata darrylo@sr.hp.com DISCLAIMER: this message is the author's personal opinion and does not constitute the support, opinion, or policy of Hewlett-Packard, or of the little green men that have been following him all day. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message