Date: Mon, 27 Oct 1997 17:00:29 -0100 (GMT) From: Remy NONNENMACHER <remy@synx.com> To: Doug White <dwhite@resnet.uoregon.edu> Cc: "David A. Allem" <bandit@aromatech.com>, freebsd-questions@freebsd.org Subject: Re: Ultra DMA Message-ID: <Pine.A32.3.91.971027164849.23272I-100000@rs1> In-Reply-To: <Pine.BSF.3.96.971026232606.12269P-100000@gdi.uoregon.edu>
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On Sun, 26 Oct 1997, Doug White wrote: > On Thu, 23 Oct 1997, David A. Allem wrote: > > > the hardware referred to as ultra dma or ultra ata, etc.. that supports > > a transfer rate of 33mb/s, is this something that is easily supported > > with free bsd, or is this not an option, i work at a computer store and > > i have a lot of clients and also family wondering about this , if you > > could please let me know i will be very appreciative > > It is supported directly in 3.0-CURRENT; otherwise you get the standard > IDE treatment. > Best say : supposed to be supported. 3.0 recognizes correctly IDE U-DMA chips but tests gave me half the perfs between the 3.0 and the 2.2.2 with same disk and same Hardware. Lack of chip exploitation ?, 3.0 disk handling diffs ? This would need some investigation. I would be happy to (humbly) offer some time to investigate this if some great chipset/disk driver writers can point me some lecture. All you *BSD* boys : THANKS FOR YOUR WORK !!.
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