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- Newsgroups: alt.cd-rom
- Path: sparky!uunet!mcsun!sun4nl!relay.philips.nl!philica!adrie
- From: adrie@ica.philips.nl (Adrie Koolen)
- Subject: Re: Creative Labs CDROM and KODAK-CD
- Message-ID: <1992Nov10.082325.586@ica.philips.nl>
- Organization: Philips Consumer Electronics, Eindhoven, The Netherlands
- References: <1992Nov9.112859.28820@alf.uib.no>
- Date: Tue, 10 Nov 1992 08:23:25 GMT
- Lines: 29
-
- In article <1992Nov9.112859.28820@alf.uib.no> s400@brems.ii.uib.no (Kurt Hatlevik) writes:
- >A few days ago, I got my first Kodak Photo-CD.
- >I ran home to try it on my Creative Labs Multi-Media CDROM.
- >And guess what. I could not access it. It does not work.
- >Can anybody tell me why ???
-
- Yes. The Kodak PhotoCD Access software uses MSDOS, MSCDEX and the (.SYS)
- device driver to read the (.PCD) photo image files on the CDROM. A PhotoCD
- disc is a CDROM-XA disc, which means that all sectors on the XA track are
- mode-2 sectors. Each mode-2 sector (2352 bytes) can be formatted in 2
- different formats, form-1 and form-2. In form-1, the sector contains 2048
- bytes of data, together with the sync pattern, header, subheader, EDC and
- ECC fields. In form-2 sectors, the data, EDC and ECC are merged into one
- raw data area.
-
- If MSCDEX asks the driver for a `cooked' sector, it should deliver 2048
- bytes of data. A mode-1 sector (the format of `normal' yellow book CDROM's)
- can be read by all drivers. But most driver/drive combinations don't check
- if the sector is mode-2/form-1, so they generate an error or deliver the
- wrong data when they encounter a mode-2/form-1 sector.
-
- To make a long story short, your CDROM drive/driver doesn't read mode-2/
- form-1 sectors, or the XA bit in the status record isn't set. Most drivers
- need to be updated for XA compatibility. Call Creative Labs.
-
- Adrie Koolen (adrie@ica.philips.nl)
- Philips Consumer Electronics, Eindhoven, the Netherlands
-
- PS. This should be in the FAQ. Does alt.cd-rom have a FAQ?
-