Date: Fri, 06 Sep 1996 14:58:31 +0200 From: Arve Ronning <Arve.Ronning@alcatel.no> To: jonathan@cc.odu.edu Cc: arver@sn.no, freebsd-hackers@freebsd.org Subject: Re: could someone mail me... Message-ID: <32301FF7.41C67EA6@alcatel.no> References: <Pine.SUN.3.91.960905193209.14113F@maui.cc.odu.edu>
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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
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