From owner-freebsd-questions Sun Apr 22 8: 1:42 2001 Delivered-To: freebsd-questions@freebsd.org Received: from harrier.mail.pas.earthlink.net (harrier.mail.pas.earthlink.net [207.217.121.12]) by hub.freebsd.org (Postfix) with ESMTP id A619337B424 for ; Sun, 22 Apr 2001 08:01:40 -0700 (PDT) (envelope-from dleimbac@earthlink.net) Received: from 1Cust127.tnt1.starkville.ms.da.uu.net (1Cust127.tnt1.starkville.ms.da.uu.net [63.30.107.127]) by harrier.mail.pas.earthlink.net (EL-8_9_3_3/8.9.3) with ESMTP id IAA07370; Sun, 22 Apr 2001 08:01:30 -0700 (PDT) Message-Id: <200104221501.IAA07370@harrier.mail.pas.earthlink.net> Date: Sun, 22 Apr 2001 10:03:07 CDT From: Dave Leimbach To: "Ted Mittelstaedt" Cc: questions@freebsd.org Subject: RE: Duplicating Audio CDs Reply-To: dleimbac@earthlink.net X-Mailer: Spruce 0.6.5 for X11 w/smtpio 0.7.9 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > I have heard that the ATAPI standard for CDROM's basically is the > SCSI standard - the ATAPI developers stole most of the SCSI commands > from SCSI-2 and put it on ATAPI. I would suspect that an emulation layer > would not be tremendously difficult to write - for at least a basic > CDROM. Of course the devil is in the details and it would rapidly get > more complicated as more and more oddball devices were supported. This is true the ATAPI and SCSI standards are very close. Both are packet based protocols with almost exactly the same commands. I worked with Jens Axboe a bit trying to figure out some strange behavior or the ATAPI drivers. The stuff that didn't work in raw ATAPI the way it should in any linux kernel after 2.2.14 suddenly worked when SCSI emulation was enabled. But I still have to say that since burncd works so well I have no inclination to write such a layer for FBSD. Dave To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message