Wave ROM organization:

Each ROM contains 4 waves, 8bit unsigned format, with the following data:
2048 samples octave 0
2048 samples octave 1
1024 samples octave 2
1024 samples octave 3
512 samples octave 4
512 samples octave 5
512 samples octave 6
512 samples octave 7

Standard waves:
HN613256P-T70	1-4
HN613256P-T71	5-8
HN613256P-CB4	9-12
HN613256P-CB5	13-16

Expansion waves ("Version E"):
EXP-1		1-4
EXP-3		5-8
EXP-2		9-12
EXP-4		13-16
