## Storage Device Driver Reference

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### DDTT CD-ROM Test Grammar Function Calls

Test scripts are ASCII text files containing calls to DDTT commands, global functions, and device-specific functions (the latter two are defined by grammar files). The following is a list of the CD-ROM-specific grammar functions:

CDROM_OPEN
CDROM_CLOSE
CDROM_GETDEVPARAMS
CDROM_QUERYDRIVELETTER
CDROM_EJECT
CDROM_LOCKDOOR
CDROM_UNLOCKDOOR
CDROM_QUERYAUDIODISKINFO
CDROM_QUERYAUDIOSTATUS
CDROM_QUERYDRIVERINFO
CDROM_QUERYSECTORINFO
CDROM_QUERYVOLUMESIZE
CDROM_QUERYAUDIOTRACKINFO
CDROM_QUERYSTATUS
CDROM_QUERYUPC
CDROM_QUERYCHANINFO
CDROM_QUERYAUDIOCHANINFO
CDROM_AUDIOCHANINFO
CDROM_RESET
CDROM_STOPAUDIO
CDROM_RESUMEAUDIO
CDROM_PLAYAUDIO
CDROM_SEEK
CDROM_DRIVELOCATION
CDROM_READFILE
CDROM_READ2048
CDROM_READ2352
CDROM_READPRE2352
CDROM_CHECKSECTOR
CDROM_CHECKRETURN
CDROM_CHECKVALUE