From owner-freebsd-questions Thu Jan 23 00:01:22 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id AAA05205 for questions-outgoing; Thu, 23 Jan 1997 00:01:22 -0800 (PST) Received: from gatekeeper.barcode.co.il (gatekeeper.barcode.co.il [192.116.93.17]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id AAA05198 for ; Thu, 23 Jan 1997 00:01:16 -0800 (PST) Received: (from smap@localhost) by gatekeeper.barcode.co.il (8.7.5/8.6.12) id JAA21213; Thu, 23 Jan 1997 09:58:48 +0200 (IST) X-Authentication-Warning: gatekeeper.barcode.co.il: smap set sender to using -f Received: from localhost.barcode.co.il(127.0.0.1) by gatekeeper.barcode.co.il via smap (V1.3) id sma021208; Thu Jan 23 09:58:29 1997 Message-ID: <32E71A1C.2EAD@barcode.co.il> Date: Thu, 23 Jan 1997 09:58:20 +0200 From: Nadav Eiron X-Mailer: Mozilla 3.0 (X11; I; SunOS 5.5 sun4m) MIME-Version: 1.0 To: Doug White CC: Jen and Luke , questions@FreeBSD.ORG Subject: Re: EIDE drives References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-questions@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Doug White wrote: > > On Wed, 22 Jan 1997, Nadav Eiron wrote: > > > Doug White wrote: > > > > > > On Fri, 17 Jan 1997, Jen and Luke wrote: > > > > > > > Hi I'm running 2.2-ALPHA and recently upgraded most of my computer, i > > > > was reading through the LINT kernel config file, and it says 'EIDE is > > > > not supported' . After lurking on the list, seeing people with 540M+ ide > > > > drives, i get the impression this is not the case. Can i actually use > > > > eide drives under FreeBSD ? and if so , someone should change that line > > > > in the LINT file ( all my hardware upgrade decisions were based on > > > > comments in the file :) > > > > > > There is no *explicit* support for these drives (ie, 32 bit access), but > > > they do work as regular IDE drives. > > > > There *is* support for 32bit access, as well as for multiblock transfers > > in the wdc driver. At least it does that for me (you need to enable it > > explicitly in the configuration file by setting the correct flags > > though). > > That's right -- I run my disks on multi-block mode, I should know that. > > Here I go trying to understand the difference between EIDE and IDE and > screw it up massively. :-) Will someone please fill me in? I don't > consider a difference between the two. I guess the major difference is the support of the faster transfer rates (PIO mode 3 and 4 and the such). I remember some basic paper about the evolution of IDE someplace. It might have been Seagate's web site or something, but I don't remember. There was also an article in Byte about a year ago on the subject. I don't think FreeBSD's wdc driver uses these faster moeds, but I haven't checked (IDE sucks anyhow). > > Doug White | University of Oregon > Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant > http://gladstone.uoregon.edu/~dwhite | Computer Science Major Nadav