  1:        : sequencer
  2: [ 1- 3]: digital audio playback
  3: [ 1- 7]: digital audio playback
  4: [ 1- 8]: digital audio playback
  5: [ 1- 9]: digital audio playback
  6: [ 1-10]: digital audio playback
  7: [ 1-11]: digital audio playback
  8: [ 1-12]: digital audio playback
  9: [ 1- 0]: hardware dependent
 10: [ 1]   : control
 11: [ 0- 0]: digital audio playback
 12: [ 0- 0]: digital audio capture
 13: [ 0- 1]: digital audio playback
 14: [ 0- 2]: digital audio capture
 15: [ 0- 0]: hardware dependent
 16: [ 0]   : control
 33:        : timer
