Appendix B
APPENDIX B AUDIO PLAYER COMMANDS
Addressing Modes
Block MMSSFF Specifies Minutes, Seconds, and Frames.
Index I I Specifies pre-mastered indices
Time MMSS Specifies Minutes and Seconds (Frame 0)
Track TT Specifies the beginning of track TT
Player Modes
P00 Home No disc is loaded. Magazine not inserted.
P00 Home No disc is loaded. Magazine inserted.
P01 Park The disc is loaded, but not spinning.
P03 Stop
P04 Play The drive is playing audio.
P06 Pause The disc is spinning, but audio play has been paused.
The following table lists the Command Mnemonic and explanation for each player command.
CM Command Drive Action
?A Address Request Returns a 10-digit string (TTIIMMSSFF) representing Track number, Index
number, and P-code time for the current address. In Park mode, the string is
XXXXXXXXXX, at lead-in 0000000000. At lead-out, the string is
AA01000000.
?B Block Request Returns a six digit string representing the current address in MMSSFF format.
In Park mode, XXXXXX is returned. 000000 is returned when the current
address is in the lead-in area.
BK Block Mode Sets the addressing mode to Block mode. All subsequent addresses must be in
MMSSFF format.
CL Clear Clears the buffer which stores the stop marker. Will also cancel search mode or
play modes.
?G Catalog Request Returns the disc's 13 digit catalog number. If the disc does not have a catalog
number, or if no disc is loaded, the string will be all "X"s.
?I Index Request Returns a four digit string representing the track number and index number. In
Park mode, XXXX is returned. 0000 is returned when the current address is in
the lead-in area, and AA01 when in the lead-out area.
