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- Newsgroups: alt.cd-rom
- Path: sparky!uunet!pipex!ibmpcug!impmh!cm
- From: cm@impmh.uucp (Colin Manning)
- Subject: ** Question re: mode 2 CD-ROM access under MSCDEX
- Message-ID: <1993Jan23.154504.23310@impmh.uucp>
- Summary: mode 2 CD-ROM access under MSCDEX
- Keywords: MSCDEX mode-2
- Organization: Integrated Micro Products Ltd
- Date: Sat, 23 Jan 1993 15:45:04 GMT
- Lines: 32
-
- Reading the documentation that comes with MSCDEX I noticed that
- (a) it allows a buffer size 2336 bytes for mode 2 CD-ROM acces
- (b) to do this, the hardware dependent driver must support 'raw' access
- (c) it states that very few drivers do indeed provide this raw mode access,
- since it is not needed for 'normal' mode-1 CD-ROMs (which only
- return 2048 bytes per block).
-
- I have an application which needs to read mode-2 CD-ROM's. [In fact, they
- are XA disks, but I do not need an 'XA' drive since I will be processing
- all data, including sound, once I have read it from the drive.]
-
- What I would like to know is how many drivers/drives will support mode-2
- operation under MSCDEX ?
-
- In particular, does anyone know if Adaptec's ASPICD.SYS and the CorelSCSI
- drivers support mode 2 access ?
-
- Also, am I likely to have problems with SCSI CD-ROM drives that wont allow
- the reading of mode-2 data ? As I understand it, you select the blocksize
- you want to read off the drive using a standard SCSI command, and therefore
- all SCSI CD-ROM drives should support mode-2. Or have I got it wrong somewhere ?
-
- Please reply by e-mail to cm@ebpe.demon.co.uk (note that is NOT the address
- I posted this msg from).
-
-
-
- Many thanks in advance,
-
-
- --
- Colin Manning cm@impmh.uucp Tel: +44 753 516599
-