Date: Sun, 12 Jul 1998 17:30:13 -0500 (CDT) From: Chris Dillon <cdillon@wolves.k12.mo.us> To: Stefan Esser <se@FreeBSD.ORG> Cc: Julian Elischer <julian@whistle.com>, current@FreeBSD.ORG Subject: Re: TESTERS NEEDED: Softupdates looks Very good. Message-ID: <Pine.BSF.3.96.980712172232.15612A-100000@duey.hs.wolves.k12.mo.us> In-Reply-To: <19980711105643.41001@mi.uni-koeln.de>
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On Sat, 11 Jul 1998, Stefan Esser wrote: > Don't worry, that's just a precaution taken by the driver code. > There have been SCSI devices that are willing to accept any > data rate offered during negotiation, but actually can't handle > more than 5MHz. These are pre-SCSI-2 drives, which just knew > they are *that* fast, they can handle *any* data rate offered > by the host adapter (which was at most 5MHz at that time ;-) > > The driver won't negotiate data rates beyond 5MHz until the drive > has been identified as a SCSI-2 device, and that's when another > negotiation is started by the driver ... > > Negotiations may be started by both the drive or host adapter > at any time. But except for IBM, most vendors leave it up to > the host system to send the first message (which the driver > does after receiving the result of an INQUIRY command). Ok, makes sense.. I was just wondering. :-) And I guess that last part about IBM drives is a GoodThing? -- Chris Dillon - cdillon@wolves.k12.mo.us - cdillon@inter-linc.net /* FreeBSD: The fastest and most stable server OS on the planet. For Intel x86 and compatibles (SPARC and Alpha under development) (http://www.freebsd.org) */ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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