POKEY (POtentiometer and KEYboard Integrated Circuit) reference
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | ||
|---|---|---|---|---|---|---|---|---|---|
| $D200 (R) | POT0 | Potentiometer 0 input | |||||||
| $D200 (W) | AUDF1 | Frequency | |||||||
| $D201 (R) | POT1 | Potentiometer 1 input | |||||||
| $D201 (W) | AUDC1 | Sound Distortion | On/Off | Volume Control | |||||
| $D202 (R) | POT2 | Potentiometer 2 input | |||||||
| $D202 (W) | AUDF2 | Frequency | |||||||
| $D203 (R) | POT3 | Potentiometer 3 input | |||||||
| $D203 (W) | AUDC2 | Sound Distortion | On/Off | Volume Control | |||||
| $D204 (R) | POT4 | Potentiometer 4 input | |||||||
| $D204 (W) | AUDF3 | Frequency | |||||||
| $D205 (R) | POT5 | Potentiometer 5 input | |||||||
| $D205 (W) | AUDC3 | Sound Distortion | On/Off | Volume Control | |||||
| $D206 (R) | POT6 | Potentiometer 6 input | |||||||
| $D206 (W) | AUDF4 | Frequency | |||||||
| $D207 (R) | POT7 | Potentiometer 7 input | |||||||
| $D207 (W) | AUDC4 | Sound Distortion | On/Off | Volume Control | |||||
| $D208 (R) | POTST | POT7 | POT6 | POT5 | POT4 | POT3 | POT2 | POT1 | POT0 |
| $D208 (W) | AUDCTL | Distortion | C1 clock | C3 clock | C1+C2 | C3+C4 | C1 filter | C2 filter | base clock |
| $D209 (R) | KBCODE | CTRL | SHIFT | Key code | |||||
| $D209 (W) | STIMER | unused | |||||||
| $D20A (R) | RANDOM | Random generator value | |||||||
| $D20A (W) | SKSTRES | unused | |||||||
| $D20B (W) | POTGO | unused | |||||||
| $D20D (R) | SERIN | Data | |||||||
| $D20D (W) | SEROUT | Data | |||||||
| $D20E (R) | IRQST | BREAK | KBCODE | SERIN | SEROUT | EOT | Timer 4 | Timer 2 | Timer 1 |
| $D20E (W) | IRQEN | BREAK | KBCODE | SERIN | SEROUT | EOT | Timer 4 | Timer 2 | Timer 1 |
| $D20F (R) | SKSTAT | Frame E | KB E | SERIN E | SER E | SHIFT | KEY | SER Busy | unused ¹ |
| $D20F (W) | SKCTL | SPACE | Serial speed | Two Tone | Fast Pot | Key scan | Debounce | ||