From owner-freebsd-hardware Fri Jan 21 1:42: 6 2000 Delivered-To: freebsd-hardware@freebsd.org Received: from gw-nl4.philips.com (gw-nl4.philips.com [192.68.44.36]) by hub.freebsd.org (Postfix) with ESMTP id 84A0D15450 for ; Fri, 21 Jan 2000 01:42:03 -0800 (PST) (envelope-from robert.schofield@philips.com) Received: from smtprelay-nl1.philips.com (localhost.philips.com [127.0.0.1]) by gw-nl4.philips.com with ESMTP id KAA18548 for ; Fri, 21 Jan 2000 10:42:00 +0100 (MET) (envelope-from robert.schofield@philips.com) From: robert.schofield@philips.com Received: from smtprelay-eur1.philips.com(130.139.36.3) by gw-nl4.philips.com via mwrap (4.0a) id xma018525; Fri, 21 Jan 00 10:42:00 +0100 Received: from notessmtp-nl1.philips.com (notessmtp-nl1.philips.com [130.139.36.10]) by smtprelay-nl1.philips.com (8.9.3/8.8.5-1.2.2m-19990317) with ESMTP id KAA18919 for ; Fri, 21 Jan 2000 10:41:55 +0100 (MET) Received: from EHLMS01.DIAMOND.PHILIPS.COM (ehlms01sv1.diamond.philips.com [130.139.54.212]) by notessmtp-nl1.philips.com (8.9.3/8.8.5-1.2.2m-19990317) with ESMTP id KAA08410 for ; Fri, 21 Jan 2000 10:41:23 +0100 (MET) Received: by EHLMS01.DIAMOND.PHILIPS.COM (Soft-Switch LMS 4.0) with snapi via EMEA2 id 0056890008067062; Fri, 21 Jan 2000 10:41:21 +0100 To: Subject: RE: ATA drives with ATA66 (?) controller Message-ID: <0056890008067062000002L922*@MHS> Date: Fri, 21 Jan 2000 10:41:21 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; name="MEMO 01/21/00 10:38:58" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org K.J.Koster@research.kpn.com@SMTP@FreeBSD.ORG on 21/01/2000 09:26:34 Sent by: owner-freebsd-hardware@FreeBSD.ORG To: freebsd-hardware@FreeBSD.ORG@SMTP cc: =20 Subject: RE: ATA drives with ATA66 (?) controller Classification: Restricted > Does anyone know what CS stands for (Cable Select?) and what it is fo= r? This is something of a remnant from the days of the original IBM Wester= n Digital two-cable setup. All drives were manufactured with a primary disk and secondary disk select on the = connectors; a twist in the cable was needed to make sure that the cable select lines were delivered to the c= orrect pins on the disk. This stopped=20 both drives reacting to the same select line going active.=20 The jumper on the drive just replaces the twist (allowing for the use o= f a cheaper to make flat cable),and should be needed when you have two disks on the same cable as master and slave= . Rob Schofield -- "Not quick, but brilliant!" - quote from a (good) friend. OJ and Aspirin! = To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message