Date: Fri, 5 Dec 2003 12:28:01 -0800 (PST) From: Dan Strick <strick@covad.net> To: freebsd-hardware@FreeBSD.ORG Cc: dan@mist.nodomain Subject: Re: Incorrect identification of ultra dma ATA cables Message-ID: <200312052028.hB5KS1WN001285@mist.nodomain>
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Dan Strick wrote: > > I tried three different 80 conductor UDMA cables. I examined them > carefully. I even checked for correct wiring of the PDIAG/CBLID > signal lines with an ohmmeter. Then Bohdan Tashchuk wrote: > > I've got one simple idea for you to try. You probably did this already > but you don't say so explicitly. > > The 80 conductor cables are color coded. Blue connector goes to the > motherboard, black connector to the master drive, grey connector to the > slave drive. > > Did you plug the cable in the right way? Then Ion-Mihai Tetcu wrote: > > Well, I'm just sitting here and waching a few 80 conductor cables and > they are: > black - black - black x 3 > black - grey - black x 5 > blue - grey - black x 1 > red - grey - black x 1 > > And the nice thing is that all are from Gigabyte motherboards boxes. >>> Yes, I plugged the cables in the right way. The motherboard end, which is supposed to use a blue socket connector, is the end that is not connected to the PDIAG/CBLID signal line. My Gigabyte motheboard did come with some astonishingly gaudy UDMA cables. Two were bright yellow with green (instead of blue) host end connectors and a bright red stripe along the conductor#1 edge of the cable. One grey cable had a red (instead of blue) connector. As near as I can tell, the electrons still drift along at pretty much the same old speed regardless of the color. Dan Strick strick@covad.net
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