Notes supported by the BIOS sound functions

G2      EQU     $00               G = 1.5 8ves below middle C
GS2     EQU     $01               G sharp (second 8ve) , etc.
A2      EQU     $02
AS2     EQU     $03
B2      EQU     $04
C3      EQU     $05
CS3     EQU     $06
D3      EQU     $07
DS3     EQU     $08
E3      EQU     $09
F3      EQU     $0A
FS3     EQU     $0B
G3      EQU     $0C
GS3     EQU     $0D
A3      EQU     $0E
AS3     EQU     $0F
B3      EQU     $10
C4      EQU     $11
CS4     EQU     $12
D4      EQU     $13
DS4     EQU     $14
E4      EQU     $15
F4      EQU     $16
FS4     EQU     $17
G4      EQU     $18
GS4     EQU     $19
A4      EQU     $1A
AS4     EQU     $1B
B4      EQU     $1C
C5      EQU     $1D
CS5     EQU     $1E
D5      EQU     $1F
DS5     EQU     $20
E5      EQU     $21
F5      EQU     $22
FS5     EQU     $23
G5      EQU     $24
GS5     EQU     $25
A5      EQU     $26
AS5     EQU     $27
B5      EQU     $28
C6      EQU     $29
CS6     EQU     $2A
D6      EQU     $2B
DS6     EQU     $2C
E6      EQU     $2D
F6      EQU     $2E
FS6     EQU     $2F
G6      EQU     $30
GS6     EQU     $31
A6      EQU     $32
AS6     EQU     $33
B6      EQU     $34
C7      EQU     $35
CS7     EQU     $36
D7      EQU     $37
DS7     EQU     $38
E7      EQU     $39
F7      EQU     $3A
FS7     EQU     $3B
G7      EQU     $3C
GS7     EQU     $3D
A7      EQU     $3E
AS7     EQU     $3F