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- Path: news.ifm.liu.se!marcus
- From: marcus@lysator.liu.se (Marcus Comstedt)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Reading Audio-CD with CDROM player ?
- Date: 18 Feb 1996 17:11:03 GMT
- Message-ID: <4g7mj7$k3l@newsy.ifm.liu.se>
- References: <xCv17MD444aaz6@_dago.blackbox.shnet.org> <19960130.427290.EF3C@an184.du.pipex.com> <4eqoh4$rgq@hobbes.compusult.nf.ca> <411.6605T644T2633@crash.cts.com>
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- pwright@crash.cts.com (Phil Wright) writes:
-
- >On 01-Feb-96 21:08:04, Mark Worden was reported to have said:
- >>Can anyone tell me if the NEC CDR-25 external CD-ROM supports CDDA? If
- >>not, is there any fix for it?
-
- >No and no.
-
- >The SCSI Toshibas from the double speeds on up, the Sony CDU76S, the
- >Plextors, the later NEC drives (I think from the 3x on up?) and a couple
- >others. I believe it's a function of the SCSI2 CDROM command set.
-
-
- Unfortunately, this functionality is _not_ included in the SCSI2
- specification. (At least not in the r10c draft, which is what I am
- looking at.) Reading audio data is supported only through vendor
- specific commands, which is why every drive seems to do it differently.
-
- For example, my NEC CDR-222 drive (4x) uses the opcode 0xd4, which
- is a group 6 command. All of group 6 is reserved for vendor specific
- commands. Other drives may use other opcodes, or even the same opcode
- but with totally diferent parameters and semantics.
-
- ( For the interrested, the relevant parts of the SCSI2 standard are
- section 6 - SCSI Commands, and section 13 - CD-ROM Devices. )
-
- / Marcus
-
- --
- --------------------------------------------------------------------------
- Marcus Comstedt Lysator Academic Computer Society
- marcus@lysator.liu.se Linko"ping University, Sweden //
- ----------------------------------------------------------------------\X/-
-