Difference between revisions of "Sprite Status/Slot Select"
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| − | Used to select the sprite slot configured by {{PortNo|$xx57}} and {{PortNo|$xx5B}}. Also "initializes the address of the palette". | + | Used to select the sprite slot configured by {{PortNo|$xx57}} and {{PortNo|$xx5B}}. 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". | ||
Revision as of 16:12, 18 August 2017
| 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".