Basic frequency register table

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This frequency table is used in 2A03, MMC5, and VRC6 pulse channels. The lowest frequency register is FFF, however only the VRC6 uses the 12th bit.

A note's frequency can be calculated using the formula below:

               1789772.727 รท 16
Frequency = ----------------------
            Frequency register + 1

2A03 has a bug that resets the duty phase when switching between certain frequencies. This can be heard as a pop and might be noticeable when using vibrato or pitch slides across those frequencies. The breaks between those groups have been marked in the chart below with asterisks.

Pitch NTSC PAL
A-07F1760
A#077F6F6*
B-0713692
C-16AD*634
C#164D5DB*
D-15F3*586
D#159D537
E-154C4EC*
F-15004A5
F#14B8*462
G-1474423
G#14343E8*
A-13F8*3B0
A#13BF37B
B-1389349
C-2356319
C#23262ED*
D-22F9*2C3
D#22CE29B
E-22A6275
F-2280252
F#225C231
G-223A211
G#221A1F3*
A-21FB*1D7
A#21DF1BD
B-21C41A4
C-31AB18C
C#3193176
D-317C161
D#316714D
E-315213A
F-313F129
F#312D118
G-311C108
G#310CF9*
A-3FD*EB
A#3EFDE
B-3E1D1
C-4D5C6
C#4C9BA
D-4BDB0
D#4B3A6
E-4A99D
F-49F94
F#4968B
G-48E84
G#4867C
A-47E75
A#4776E
B-47068
C-56A62
C#5645D
D-55E57
D#55952
E-5544E
F-54F49
F#54B45
G-54641
G#5423E
A-53F3A
A#53B37
B-53834
C-63431
C#6312E
D-62F2B
D#62C29
E-62926
F-62724
F#62522
G-62320
G#6211E
A-61F1D
A#61D1B
B-61B19
C-71A18
C#71816
D-71715
D#71514
E-71413
F-71312
F#71211
G-71110
G#710F
A-7FE
A#7ED
B-7DC
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