Enhanced CD Guide

One of a few Enhanced CD logos

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Attribution: Philips, Public domain, via Wikimedia Commons

Definition: Enhanced CD (AKA CD-Extra and CD-Plus) is a broad term used by the music industry for any disc with both audio tracks and data tracks. The data tracks are often but not exclusively for [IBM PC compatible Guide|IBM PC compatible] computers. For Redump.info purposes the term is used exclusively for multi-session CDs (Blue Book) and mixed-mode (Yellow Book) CDs where the disc's primary content is the audio tracks.

• If the data tracks are the primary content of the disc. Then add disc to the DAT where said Data tracks belong to instead.

• CD-I Ready discs while also often called Enhanced CDs are not considered such by Redump and should go under the CD-I DAT instead. Note to that there is at least one known disc mastered like a CD-I Ready one but with PC content. And any such examples are considered pure Audio CDs and should go under that DAT.

Please note! (03-26-23): Currently, Universal Hash is not implemented well for multisession / enhanced CDs. If Universal Hash exists in a submission or entry, please remove it until this feature is fully implemented.

Enhanced CDs may have languages added

Multisession Enhanced CDs have a gap of 11400 sectors between sessions

How to calculate multisession range (MPF should do this automatically now):

• Open disc.txt in logs and go to TOC
• Session 1 range is LBA 0 to (last sector in session 1 minus 11400)
• Session 2 range is (first sector in session 2 to last sector of disc)

Example:

Audio Track  1, LBA        0 -    14887, Length    14888
Audio Track  2, LBA    14888 -    15484, Length      597
Audio Track  3, LBA    15485 -   226234, Length   210750
Audio Track  4, LBA   226235 -   226831, Length      597
Audio Track  5, LBA   226832 -   227278, Length      447
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Session 1: 0-3487 -> (14887-11400)
Session 2: 14888-227278