GMC SN76489AN Frequencies
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Game Master Cartridge
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SN76489AN Note Frequency Worksheet
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Clock (Hz)4000000
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A4 Freq (Hz)440
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NoteFreq. (Hz)10-bit value1st Byte2nd Byte
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A027.53FF0F3F
10
29.135235093FF0F3F
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30.867706313FF0F3F
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C132.703195633FF0F3F
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34.647828833FF0F3F
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36.708095933FF0F3F
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38.890872893FF0F3F
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41.203444523FF0F3F
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43.653528813FF0F3F
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46.24930273FF0F3F
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48.999429333FF0F3F
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51.9130873FF0F3F
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A1553FF0F3F
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58.270470173FF0F3F
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61.735412623FF0F3F
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C265.406391263FF0F3F
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69.295657653FF0F3F
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73.416191853FF0F3F
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77.781745773FF0F3F
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82.406889033FF0F3F
29
87.307057623FF0F3F
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92.49860543FF0F3F
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97.998858663FF0F3F
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103.8261743FF0F3F
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A21103FF0F3F
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116.54094033FF0F3F
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123.47082523F4043F
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C3130.81278253BB0B3B
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138.59131533850538
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146.83238373530335
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155.56349153230332
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164.81377812F6062F
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174.61411522CB0B2C
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184.99721082A3032A
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195.997717327D0D27
44
207.6523482590925
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A32202380823
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233.08188072180821
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246.94165051FA0A1F
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C4261.6255651DD0D1D
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277.18263061C2021C
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293.66476741A9091A
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311.12698311910119
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329.627556117B0B17
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349.22823051650516
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369.99442161510115
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391.995434713E0E13
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415.30469612C0C12
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A444011C0C11
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466.163761410C0C10
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493.88330090FD0D0F
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C5523.25113010EE0E0E
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554.36526120E1010E
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587.32953480D4040D
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622.25396620C8080C
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659.25511230BD0D0B
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698.4564610B2020B
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739.98884320A8080A
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783.990869309F0F09
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830.60939210960609
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A588008E0E08
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932.32752270860608
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987.766601807E0E07
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C61046.502260770707
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1108.7305220700007
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1174.6590706A0A06
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1244.5079320640406
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1318.51022505E0E05
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1396.9129220590905
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1479.9776860540405
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1567.98173904F0F04
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1661.21878404B0B04
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A617600470704
82
1864.6550450430304
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1975.53320403F0F03
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C72093.0045203B0B03
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2217.4610450380803
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2349.3181390350503
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2489.0158650320203
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2637.02044902F0F02
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2793.82584402C0C02
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2959.95537302A0A02
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3135.9634770270702
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3322.4375680250502
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A735200230302
94
3729.3100910210102
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3951.06640701F0F01
96
C84186.00904101D0D01
97
4434.9220901C0C01
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4698.63627901A0A01
99
4978.0317290190901
100
5274.0408980170701
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