From owner-freebsd-scsi Tue Nov 20 8:39: 2 2001 Delivered-To: freebsd-scsi@freebsd.org Received: from aslan.scsiguy.com (aslan.scsiguy.com [63.229.232.106]) by hub.freebsd.org (Postfix) with ESMTP id C15C837B418 for ; Tue, 20 Nov 2001 08:38:57 -0800 (PST) Received: from scsiguy.com (localhost [127.0.0.1]) by aslan.scsiguy.com (8.11.5/8.11.5) with ESMTP id fAKGcbY96331; Tue, 20 Nov 2001 09:38:37 -0700 (MST) (envelope-from gibbs@scsiguy.com) Message-Id: <200111201638.fAKGcbY96331@aslan.scsiguy.com> To: "Jose M. Alcaide" Cc: scsi@FreeBSD.ORG Subject: Re: weird problems with on-board Adaptec 7880 In-Reply-To: Your message of "Tue, 20 Nov 2001 14:50:37 +0100." <20011120145037.A1056@v-ger.we.lc.ehu.es> Date: Tue, 20 Nov 2001 09:38:36 -0700 From: "Justin T. Gibbs" Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org >On Mon, Nov 19, 2001 at 03:08:48PM -0700, Justin T. Gibbs wrote: >> I don't think the syncrate problem is at all related to why the bus does >> not work. The bus doesn't work because termination *on the controller* >> is not set correctly. Your test with the 2940U can't detect all termination >> issues. > >Maybe. I supposed that termination at the controller side was working. >However, if termination on the controller is always on, then it should >work when there are devices attached to only one of the two SCSI onboard >connectors. OTOH, if termination is always off, then it should work when >there are terminated device chains attached to both onboard SCSI >connectors... or am I wrong? It really depends on how the MB is wired. Some MBs don't allow any software control of the termination from the aic7xxx chip. Since I haven't used your board, I can't say. >> The dump is only useful with an understanding of the corresponding >> SCSI Select settings. Please go into SCSI select and set the transfer >> rate from fastest to slowest across the SCSI IDs. This will provide >> a better understanding of how this BIOS is setting the SEEPROM. Also >> include the SCSI BIOS version for this controller. > >Well, I did the following tests (logs attached): I'm on my way out of town so I will not be able to look at these until next Monday. In the mean time, can you send me one last log with each of the 16 devices set to a different transfer rate. It is much easier to look at a single dump that shows all possible speeds (highest to lowest), then to piece together 5 different logs that don't cover all of the possible settings. -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message