NotesAndDurations.bs2

' {$STAMP BS2}
' {$PBASIC 2.5}
' NotesAndDurations.bs2: Frere Jacques with a semi-intelligent parser!

notes DATA "C","D","E","C","C","D","E","C","E","F","G","E","F","G","Q"
times DATA 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 4, 4, 2

wholeNote CON 2000 'Arbitrarily defining the tune to run at 120 BPM
index VAR Byte
index=0 'C programmer's instincts kicking in here-never assume that a variable is initialized to anything unless you do it yourself!
				'In case you didn't know, in C, variables are not guaranteed to be initialized to anything-they could contain some random junk from
        'whatever was left over in RAM from some other program.
offset VAR Nib
noteName VAR Byte
noteFreq VAR Word
noteTime VAR Word

DO UNTIL noteName="Q"
  READ notes+index, noteName
  LOOKDOWN noteName, ["a", "b", "B", "C", "d", "D", "e", "E", "F", "g", "G", "a", "P", "Q"], offset 'Lowercase letters are flat
  LOOKUP offset, [1760, 1865, 1976, 2093, 2217, 2349, 2489, 2637, 2794, 2960, 3136, 3322, 0, 0], noteFreq
  READ times+index, noteTime
  noteTime=WholeNote/noteTime
  FREQOUT 9, noteTime, noteFreq
  index=index+1
LOOP
END