Bitfields for CD-ROM device parameters:
Bit(s)	Description	)
 0	door open
 1	door unlocked
 2	supports raw reading in addition to cooked
 3	writable
 4	can play audio/video tracks
 5	supports interleaving
 6	reserved
 7	supports prefetch requests
 8	supports audio channel control
 9	supports Red Book addressing in addition to HSG
 10	audio is playing
 11	no disk in drive
 12	supports R-W subchannels