Sprite Status/Slot Select
From SpecNext official Wiki
Revision as of 15:12, 18 August 2017 by wiki>Hyphz
| Number | $303B |
|---|---|
| Decimal | |
| Short desc. | Selects active sprite slot and palette address, and returns sprite status. |
| Bit Mask | |
| Readable | Yes |
| Writable | Yes |
| Subsystem | Sprites |
Used to select the sprite slot configured by Sprite Attribute Upload ($xx57 / 87) and Sprite Pattern Upload ($xx5B / 91). Once written, these ports may auto-increment the sprite number they are addressing. This auto-increment happens independently and so the two ports may end up addressing different sprites as a result. A write to this port will resynchronise them to the same sprite.
Also "initializes the address of the palette".