From owner-freebsd-hardware Mon Mar 13 11: 0:30 2000 Delivered-To: freebsd-hardware@freebsd.org Received: from chmls06.mediaone.net (chmls06.mediaone.net [24.128.1.71]) by hub.freebsd.org (Postfix) with ESMTP id 9BD3E37BD8B; Mon, 13 Mar 2000 11:00:18 -0800 (PST) (envelope-from pulsifer@mediaone.net) Received: from ahp3 (ahp.ne.mediaone.net [24.128.184.250]) by chmls06.mediaone.net (8.8.7/8.8.7) with SMTP id OAA17141; Mon, 13 Mar 2000 14:00:10 -0500 (EST) From: "Allen Pulsifer" To: "Satoshi Asami" Cc: Subject: RE: IDE bus transfer speed Date: Mon, 13 Mar 2000 14:00:11 -0500 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) In-Reply-To: <200003131825.KAA08189@silvia.hip.berkeley.edu> X-Mimeole: Produced By Microsoft MimeOLE V5.00.2314.1300 Importance: Normal Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org The typical maximum throughput of an IDE controller in a PC-AT in those days was about 3-5 MB/s. I'm not sure which IDE modes were in use back then, and what their maximum burst transfer rates where, but if you really need this you might be able to find it at http://www.ata-atapi.com/ or http://www.t13.org/. The T13 web site has the last revision of each draft specification, which is a pretty accurate reflection of the actual standard. You can check the document release dates to see what was in use in 1991. Allen > -----Original Message----- > From: owner-freebsd-hardware@FreeBSD.ORG > [mailto:owner-freebsd-hardware@FreeBSD.ORG]On Behalf Of Satoshi Asami > Sent: Monday, March 13, 2000 1:25 PM > To: hardware@FreeBSD.ORG > Subject: IDE bus transfer speed > > > Hi, > > Does anyone have a list of old IDE bus transfer speeds? In > particular, I'd like to know what the bus transfer speed was on a > typical system in 1991 (33MHz 386, 128MB HDD, etc.). > > Note I'm asking for bus transfer speed, not what the disk can do. > (The answer is "160MB/s" for the fastest SCSI today, for instance.) > > TIA! > > Satoshi > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hardware" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message