Date: Wed, 11 Sep 1996 11:26:00 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: kuku@gilberto.physik.rwth-aachen.de (Christoph Kukulies) Cc: freebsd-hackers@freefall.freebsd.org Subject: Re: IDE and ASUS P/I-P6NP5 Message-ID: <199609111826.LAA05182@phaeton.artisoft.com> In-Reply-To: <199609110905.LAA08284@gilberto.physik.rwth-aachen.de> from "Christoph Kukulies" at Sep 11, 96 11:05:42 am
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> 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.
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