Date: Thu, 23 May 1996 22:49:41 +0200 (MET DST) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-scsi@freebsd.org Cc: lada@ws2301.gud.siemens.co.at (Hr.Ladavac) Subject: Re: Hi again: PD optical drives Message-ID: <199605232049.WAA19115@uriah.heep.sax.de> In-Reply-To: <199605221045.AA188851902@ws2301.gud.siemens.co.at> from "Hr.Ladavac" at "May 22, 96 12:45:02 pm"
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(Moved to freebsd-scsi, seems more appropriate.) As Hr.Ladavac wrote: > > I've got an MO drive working with the `od' driver, in case this is > > what you mean. > > A relatively new "Phase Change" technology. Somewhat similar to MO, but > not quite - a rewritable purely optical. > > `od' driver could be interesting as a start, but these things combine > a SCSI CD-ROM reader on one LUN, and a Removable Media on another > (not at the same time, though.) Ah, ok. We're still in need for a good design of how to share the CD-ROM driver with the WORM driver (since all CD-R devices constitute a superclass of CD-ROM). So we should try to find a good way how to arrange for this functionality. Basically, a `pd' driver would be nothing else than an `od' driver on LUN 0, and a `cd' driver on LUN 1. The only specific code would be the driver probe. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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