| Read/Write | ADR | HEXADR | NAME | Description | shadow | OS |
|---|---|---|---|---|---|---|
| Read | 53761 | $D201 | POT1 | Pot/paddle 1 | 625 | all |
| Write | 53761 | $D201 | AUDC1 | Audio channel 1 control | none | all |
| Bit | Description |
|---|---|
| 7,6,5 | Distortion |
| 4 | Volume only |
| 3,2,1,0 | Volume |
Volume from 0 to 15 (16 steps)
| 7 | 6 | 5 | description of distortion |
|---|---|---|---|
| 1 | 1 | 1 | rectangular curve |
| 1 | 1 | 0 | 4-bit poly |
| 1 | 0 | 1 | rectangular curve |
| 1 | 0 | 0 | 17-bit-poly |
| 0 | 1 | 1 | 5-bit poly |
| 0 | 1 | 0 | 5-bit poly, then 4-bit-poly |
| 0 | 0 | 1 | 5-bit poly |
| 0 | 0 | 0 | 5-bit poly, then 17-bit-poly |