From owner-freebsd-current Wed Oct 2 20:20:39 2002 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C93C737B401 for ; Wed, 2 Oct 2002 20:20:37 -0700 (PDT) Received: from newtrinity.default-network.net (newtrinity.default-network.net [62.159.128.162]) by mx1.FreeBSD.org (Postfix) with ESMTP id DCFE043E65 for ; Wed, 2 Oct 2002 20:20:36 -0700 (PDT) (envelope-from corex@newtrinity.default-network.net) Received: from newtrinity.default-network.net (markus@localhost [127.0.0.1]) by newtrinity.default-network.net (8.12.3/8.12.3/DEFAULT-NETWORK.NET) with ESMTP id g933KK4H051825; Thu, 3 Oct 2002 05:20:20 +0200 (CEST) (envelope-from corex@newtrinity.default-network.net) Received: (from corex@localhost) by newtrinity.default-network.net (8.12.3/8.12.3/Submit) id g933K8mH051822; Thu, 3 Oct 2002 05:20:08 +0200 (CEST) (envelope-from corex) Date: Thu, 3 Oct 2002 05:20:08 +0200 From: marius@alchemy.franken.de To: "Long, Scott" Cc: "'attila!'" , FreeBSD-CURRENT , Eric Hodel , "Justin T.Gibbs" Subject: Re: aic7890/91 controller Message-ID: <20021003052008.H96711@newtrinity.default-network.net> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: ; from Scott_Long@adaptec.com on Wed, Oct 02, 2002 at 07:53:27PM -0700 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wed, Oct 02, 2002 at 07:53:27PM -0700, Long, Scott wrote: > > > > The aic 7890/91 is a dual 160 MB controller. > > No, the 7890/91 is 80MB/s max. The Tyan S2462UNG has an aic-7899w. > > > Adaptec's > > documentation expliciely states that the bus speed is the > > rate of the _slowest_ device on the channel. > > No it does not. Well, the whole bus will switch to SE-speed if a SE-device is connected, guess that's what he meant. > > > Did you try > > placing the cd on the B channel or vice-versa? Tyan, in > > their 2642 SMP manual, recommends that the faster (and > > boot) drives be placed on the B bus. > > I can't imagine why it would say this. Can you provide a > reference? > Me neither but my 2642 additionally only boots from channel B. The manual is available at: ftp://ftp.tyan.com/manuals/thunder/m_s2462_100.pdf He was refering to: "You can connect Ultra160 and Ultra2 SCSI devices to the 68-pin Low Voltage Differential/Single-Ended (LVD/SE) connectors on both SCSI channels. Or you can operate the newer Ultra160 and Ultra2 devices at their maximum speed on Channel B while at the same time using legacy SCSI devices on Channel A." (page 47) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message