The most beautiful memory map

Osc 1 Bit 7 6 5 4 3 2 1 0
Dez 128 64 32 16 8 4 2 1
Hex $80 $40 $20 $10 $08 $04 $02 $01
    0 $D400 54272 Frequency
LowByte
0 – 255 
(rarely used as the effect is small)
    1 $D401 54273 Frequency
HighByte
0 – 255
    2 $D402 54274 PulseWidth
LowByte
0 – 255
    3 $D403 54275 PulseWidth
HighByte
  0 – 15 
(rarely used either)
    4 $D404 54276 WaveForm Noise Square Saw Tri Test Ring Sync Gate
    5 $D405 54277 Attack
Decay
A: 0 – 15 (16 – 240) D: 0 – 15
    6 $D406 54278 Sustain
Release
S: 0 – 15 (16 – 240) R: 0 – 15
Osc 2 Bit 7 6 5 4 3 2 1 0
Dez 128 64 32 16 8 4 2 1
Hex $80 $40 $20 $10 $08 $04 $02 $01
  0 7 $D407 54279 Frequency
LowByte
0 – 255
  1 8 $D408 54280 Frequency
HighByte
0 – 255
  2 9 $D409 54281 PulseWidth
LowByte
0 – 255
  3 10 $D40A 54282 PulseWidth
HighByte
  0 – 15
  4 11 $D40B 54283 WaveForm Noise Square Saw Tri Test Ring Sync Gate
  5 12 $D40C 54284 Attack
Decay
A: 16 – 240 D: 0 – 15
  6 13 $D40D 54285 Sustain
Release
S: 16 – 240 R: 0 – 15
Osc 3 Bit 7 6 5 4 3 2 1 0
Dez 128 64 32 16 8 4 2 1
Hex $80 $40 $20 $10 $08 $04 $02 $01
0 7 14 $D40E 54286 Frequency
LowByte
0 – 255
1 8 15 $D40F 54287 Frequency
HighByte
0 – 255
2 9 16 $D410 54288 PulseWidth
LowByte
0 – 255
3 10 17 $D411 54289 PulseWidth
HighByte
  0 – 15
4 11 12 $D412 54290 WaveForm Noise Square Saw Tri Test Ring Sync Gate
5 12 19 $D413 54291 Attack
Decay
A: 16 – 240 D: 0 – 15
6 13 20 $D414 54292 Sustain
Release
S: 16 – 240 R: 0 – 15
All Bit 7 6 5 4 3 2 1 0
Dez 128 64 32 16 8 4 2 1
Hex $80 $40 $20 $10 $08 $04 $02 $01
7 14 21 $D415 54293 Cutoff
LowByte
  0 – 7
8 15 22 $D416 54294 Cutoff
HighByte
0 – 255
9 16 23 $D417 54295 Resonance
Filter Enable
Res: 16 – 240 Extern Filter3 Filter2 Filter1
10 17 24 $D418 54296 Volume
Filter Type
Osc3
Off
High Band Low Vol: 0 – 15
11 18 25 $D419 54297 Poti 1 Read: 0 – 255 (only with externally applied R + C)
12 19 26 $D41A 54298 Poti 1 Read: 0 – 255 (only with externally applied R + C)
13 20 27 $D41B 54299 Osc 3 Read: 0 – 255
14 21 28 $D41C 54300 Env Osc 3 Read: 0 – 255

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