From owner-freebsd-hackers Fri Sep 6 06:01:28 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id GAA00680 for hackers-outgoing; Fri, 6 Sep 1996 06:01:28 -0700 (PDT) Received: from gatekeeper.alcatel.no ([155.4.1.1]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id GAA00674 for ; Fri, 6 Sep 1996 06:01:24 -0700 (PDT) Received: from stku50.alcatel.no.norkrets by gatekeeper.alcatel.no (8.7.3/Alcanet-SC) id PAA14129; Fri, 6 Sep 1996 15:00:00 +0200 (MET DST) Received: from stku50 (localhost.alcatel.no) by stku50.alcatel.no.norkrets (4.1/SMI-4.1) id AA26568; Fri, 6 Sep 96 14:59:58 +0200 Message-Id: <32301FF7.41C67EA6@alcatel.no> Date: Fri, 06 Sep 1996 14:58:31 +0200 From: Arve Ronning X-Mailer: Mozilla 2.0 (X11; I; SunOS 4.1.3_U1 sun4m) Mime-Version: 1.0 To: jonathan@cc.odu.edu Cc: arver@sn.no, freebsd-hackers@freebsd.org Subject: Re: could someone mail me... References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Jonathan Sturges wrote: > > On Mon, 2 Sep 1996, Arve Ronning wrote: > > > Jonathan Sturges wrote: > > > > > > ...the atapi.[ch] and wcd.[ch] from 2.1.5R? > > > > > > I'm still wrestling with my stupid Hitachi CDR-7730 and was hoping that > > > these files had been improved from those in 2.1R. > > > > > > > I was wrestling too -- with 2.1.5R -- until I found an ATA violation in atapi.c . > > The following is the patch that made my CDR-7730 work (note that the probe was ok, > > but I got '...: Device not configured' when I tried to 'mount_cd9660'). > > As you can see, the code in 2.1.5R is almost a year old so I don't think you will > > win your wrestling match without this patch. > > Thanks for the patch!! It worked great... Great ! :-). > > Maybe they'll incorporate this into later versions of atapi.c, as long as > it isn't hampering performance on better cd-roms. I have submitted the patch (by send-pr), so let's hope it gets included :). It won't reduce performance on faster drives. Btw I'm a little surprised that so many ATAPI CDROM drives have worked so well with FreeBSD. This is really a violation of the ATA spec in that the driver didn't wait for the drive to signal 'ready' before sending a command packet to it ! So, don't blame the Hitachi CDR-7730. It works fine for me now. I did a small experiment copying 16 Meg from a CDROM to disk and got an average transfer rate of 500 kByte/s which is not so bad for a $65 drive (some of my old IDE disks didn't do better :). - Arve