Sound Chip Register Write
From SpecNext Wiki
| Port Number | $BFFD |
|---|---|
| Decimal | 49149 |
| Short desc. | Writes to the selected register of the selected sound chip. |
| Bit Mask | %10-- ---- ---- --0- |
| Readable | No |
| Writable | Yes |
| Subsystem |
Readable if display-timing (NextReg:$03) is set to +3/Next (since core 3.1.1).