From owner-freebsd-stable Tue Jan 29 6:42:29 2002 Delivered-To: freebsd-stable@freebsd.org Received: from smtpproxy2.mitre.org (smtpproxy2.mitre.org [128.29.154.90]) by hub.freebsd.org (Postfix) with ESMTP id 5A1B037B405 for ; Tue, 29 Jan 2002 06:42:23 -0800 (PST) Received: from avsrv2.mitre.org (avsrv2.mitre.org [128.29.154.4]) by smtpproxy2.mitre.org (8.11.3/8.11.3) with ESMTP id g0TEgLc11991; Tue, 29 Jan 2002 09:42:21 -0500 (EST) Received: from MAILHUB1 (mailhub1.mitre.org [129.83.20.31]) by smtpsrv2.mitre.org (8.11.3/8.11.3) with ESMTP id g0TEgKi29677; Tue, 29 Jan 2002 09:42:20 -0500 (EST) Received: from dhcp-105-164.mitre.org (128.29.105.164) by mailhub1.mitre.org with SMTP id 8997407; Tue, 29 Jan 2002 09:41:42 -0500 Message-ID: <3C56B4CB.5FD5E46C@mitre.org> Date: Tue, 29 Jan 2002 09:42:19 -0500 From: Jason Andresen Organization: The MITRE Corporation X-Mailer: Mozilla 4.75 [en]C-20000818M (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: Dennis Dai Cc: FreeBSD-Stable@freebsd.org Subject: Re: Multiple Promise controllers References: <20020129001127.96035.qmail@web14704.mail.yahoo.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Dennis Dai wrote: > > (Please cc me as I'm not on the list.) > > I used to plug 5 promise Ultra100 TX2 cards in one computer. All of > them were recognized. But when I plugged 12 drives into those cards, > only 8 drives were recognized correctly (or maybe I need to MAKEDEV?). > I remember reading somewhere (probably in one of the source code either > in FreeBSD or in Linux kernel) that promise has a upper limit of 12 > drives in one system but only the first 8 will be in DMA mode and the > last 4 in PIO with some treak (burst? can't remember). That's exactly the behavior I saw. They were in PIO4 mode IIRC, although FreeBSD detected them in UDMA100 mode, the first time I tried to access them they dropped back down to PIO4 (I think). The drives don't show up in the BIOS boot screen either. -- \ |_ _|__ __|_ \ __| Jason Andresen jandrese@mitre.org |\/ | | | / _| Network and Distributed Systems Engineer _| _|___| _| _|_\___| Office: 703-883-7755 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message