64 SFX exist in memory. Each SFX is also 64 rows long and each row is one byte. The range of values in each byte define the command and data applied.
| Byte Values | Parameter Range | Definition |
|---|---|---|
| 000-024 | 1-25 | Positive Pitch Offset |
| 025-049 | 1-25 | Negative Pitch Offset |
| 050-074 | 1-25 | Positive Note Offset |
| 075-099 | 1-25 | Negative Note Offset |
| 100-114 | 1-15 | Positive Volume Offset |
| 115-129 | 1-15 | Negative Volume Offset |
| 130-145 | 1-16 | Positive Noise Offset |
| 146-161 | 1-16 | Negative Noise Offset |
| 162-169 | 1-8 | Positive EG Period Offset |
| 170-177 | 1-8 | Negative EG Period Offset |
| 178-178 | - | Envelope Flag Off |
| 179-179 | - | Envelope Flag On |
| 180-180 | - | Tone Flag On |
| 181-181 | - | Tone Flag Off |
| 182-182 | - | Noise Flag On |
| 183-183 | - | Noise Flag Off |
| 184-186 | 1-3 | Skip Condition |
| 187-187 | - | Filter Off |
| 188-191 | 1-4 | Filter |
| 192-201 | 1-10 | Delay |
| 202-220 | 1-19 | Set Counter |
| 221-221 | - | End SFX |
| 222-246 | 0-24 | Loop Offset back from current row |
| 247-247 | - | Random Delay |
| 248-248 | - | Random Noise |
| 249-249 | - | Random Volume |
| 250-250 | - | Random Note |
| 251-251 | - | Random Pitch |
| 252-255 | 1-4 | EG Cycle |