From owner-freebsd-hackers Wed Sep 11 11:28:05 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id LAA20060 for hackers-outgoing; Wed, 11 Sep 1996 11:28:05 -0700 (PDT) Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.211]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id LAA20054 for ; Wed, 11 Sep 1996 11:28:03 -0700 (PDT) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id LAA05182; Wed, 11 Sep 1996 11:26:00 -0700 From: Terry Lambert Message-Id: <199609111826.LAA05182@phaeton.artisoft.com> Subject: Re: IDE and ASUS P/I-P6NP5 To: kuku@gilberto.physik.rwth-aachen.de (Christoph Kukulies) Date: Wed, 11 Sep 1996 11:26:00 -0700 (MST) Cc: freebsd-hackers@freefall.freebsd.org In-Reply-To: <199609110905.LAA08284@gilberto.physik.rwth-aachen.de> from "Christoph Kukulies" at Sep 11, 96 11:05:42 am X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > The Pentium Pro ASUS P/I-P6NP5 board claims to support > onboard IDE (bus master) at 17 MB/s in PIO mode and 22MB/s in > DMA mode. > > How useful is this under FreeBSD-current? Does the IDE driver support > this? Are there any IDE disk drives allowing for transfer rates > in the range of those achieved by SCSI drives? Would that rule out > SCSI as the choice when you want to have really fast disk access? DMA mode isn't supported AFAIK. I think the problem is still that it is impossible to reliably detect support for the mode without crashing older (WD1007, etc.?) hardware. The wonderful think about the ATAPI standard is that there are so many non-interoperable implementations to choose from! Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.