From owner-freebsd-hardware Tue Dec 11 22:41: 3 2001 Delivered-To: freebsd-hardware@freebsd.org Received: from femail30.sdc1.sfba.home.com (femail30.sdc1.sfba.home.com [24.254.60.20]) by hub.freebsd.org (Postfix) with ESMTP id 9D4E537B416 for ; Tue, 11 Dec 2001 22:40:59 -0800 (PST) Received: from home.com ([24.3.185.85]) by femail30.sdc1.sfba.home.com (InterMail vM.4.01.03.20 201-229-121-120-20010223) with ESMTP id <20011212064059.SQNJ26611.femail30.sdc1.sfba.home.com@home.com>; Tue, 11 Dec 2001 22:40:59 -0800 Message-ID: <3C16FC24.3BD0C3F1@home.com> Date: Wed, 12 Dec 2001 01:41:40 -0500 From: "Gary T. Corcoran" X-Mailer: Mozilla 4.76 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Robert Clark Cc: Brett Glass , hardware@FreeBSD.ORG, " =?iso-8859-1?Q?S=F8ren?= Schmidt" Subject: Re: Where to put the CD on an IDE system? References: <200112120307.UAA07750@lariat.org> <20011211212347.A55653@darkstar.gte.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Robert Clark wrote: > > I've heard that putting a slow CDROM and a faster > HD on the same cable causes that cable to run > at the slower of the two speeds. > > IE PIO/DMA/33/66, etc. This used to be the case, but apparently is NOT a limitation of the IDE interface itself. On my Windows machine, I have the latest/greatest Intel IDE driver for the Intel IDE interface in my chipset. It allows each device to run at the maximum speed of the device, regardless if you mix fast/slow devices on the same cable. So the interesting question is what does the latest/greatest FreeBSD IDE driver do when you mix fast/slow devices on the same cable... ;-) Gary To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message