Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!voder!nsc!amdahl!twg.com!obelix!david From: david@twg.com (David Herron) Newsgroups: comp.sys.amiga Subject: Re: Multimedia Message-ID: <5698@gollum.twg.com> Date: 3 May 90 16:58:46 GMT References: <17644@snow-white.udel.EDU> <24445@pasteur.Berkeley.EDU> <984@tmiuv0.uucp> <17539@well.sf.ca.us> Sender: news@twg.com Reply-To: david@twg.com (David Herron) Organization: The Wollongong Group, Palo Alto, CA Lines: 44 In article <17539@well.sf.ca.us> farren@well.sf.ca.us (Mike Farren) writes: >rick@tmiuv0.uucp writes: >>Ah! But you can save to CD-ROM. The technology is called WORM (Write Once, >>Read Many). The gist of this is that you can write to the media ONCE, after >>that it's CD-ROM. Some WORM technologies do _not_ produce the same product >>as a standard CD-ROM, but some do. WORM doesn't use the same data format as CD-ROM.. sorry, it's not that simple a thing to do. As others have said the only choice is the expensive route through the CD-ROM stampers. Playing CD ROM's through an Amiga oughta be pretty simple. They just hook up as an SCSI device and it'd require another file system. No biggie. FYI-- SunOS 4.1 (just released last week) has stuff in it to read from CD ROM file systems and play the audio through the audio device. (Of course they're limitted to a single channel at 8khz resolution -- which was still enough to do credit to Jimi Hendrix at the Sun suite party at last sumer's Usenix, the music for the party was provided via a SparcStation 1 ...) >None do. Period. A standard CD-ROM is a device which relies on the mechanical >properties of the disk (the pits in the reflective surface) for its data >encoding. You CANNOT make a standard CD non-mechanically. You may never >be able to - and you absolutely, certainly cannot do so now. What about THOR? That vapourware from Tandy which is supposed to be the same format & all as CD ROM but recordable. Of course it's never seen light of day since that announcement and who knows when it'll be out.. Wouldn't it be possible to emulate CD ROM's with WORMS? Or even these magneto-optical drives that are starting to come out? They all have approx the same storage capacity (600 megs). Is the data throughput approx the same? The throughput I recall for CD ROM is 150 kbyte/sec which is more than a bit low for video so maybe that's not right. Rather -- the important thing is to be able to test your multi-media production before you send it to the CDROM stampers. (since they're expensive). So you write it onto a WORM or mag-opt and test away. -- <- David Herron, an MMDF weenie, <- Formerly: David Herron -- NonResident E-Mail Hack <- <- (funny quote under construction)