From owner-freebsd-stable Tue Aug 6 5:57: 2 2002 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D882137B400 for ; Tue, 6 Aug 2002 05:56:58 -0700 (PDT) Received: from kiln.isn.net (kiln.isn.net [198.167.161.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id DC8D143E4A for ; Tue, 6 Aug 2002 05:56:57 -0700 (PDT) (envelope-from mburke@isn.net) Received: from pinky.isn.net (mburke@pinky.isn.net [198.167.161.253]) by kiln.isn.net (8.12.2/8.12.2) with ESMTP id g76Cux9O016083 for ; Tue, 6 Aug 2002 09:56:59 -0300 Subject: Re: atapi_dma while burning Cds with Promise Ata/133 Tx2 From: Michael Burke To: freebsd-stable@FreeBSD.ORG In-Reply-To: <20020806144800.A573@gicco.cablecom.ch> References: <20020806144800.A573@gicco.cablecom.ch> Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Evolution/1.0.2 Date: 06 Aug 2002 09:57:00 -0300 Message-Id: <1028638621.4703.5.camel@pinky> Mime-Version: 1.0 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 On Tue, 2002-08-06 at 09:48, Hanspeter Roth wrote: > I have a Cdwriter connected to a Promise ATA133 Tx2 controller. > I tried a Plextor Cdwriter PX-W4012A and a Memorex SixteenMAXX 1040. > > Burning works without DMA. If DMA is enabled the system hangs as > soon as burning starts. I have also had this problem with a Promise ATA100 controller and a Plextor 1610T, and also in Linux. In Windows, I don't even have an option to enable DMA as the card's drivers claim it is a SCSI card... In the Promise FAQ, there is mention of not having the option to enable DMA (in Windows) because the card determines which devices should use DMA; and I also recall that they suggest only using hard drives on a Promise card, as other devices will work but not optimally (I can't remember exactly -- check their site for the real wording). My ultimate solution was rather drastic -- got a new motherboard, with a VIA 8233a controller (my old board, ABIT KT7A, seemed to have a buggy 686B chipset that stole way too much CPU time even in DMA mode, and the Promise card caused its own problems...) Mike. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message