Sprite port-mirror Attribute 2 Register
From SpecNext official Wiki
| Number | $37 |
|---|---|
| Readable | No |
| Writable | Yes |
| Short Description | Nextreg port-mirror to write directly into "byte 3" of Sprite Attribute Upload ($xx57 / 87). |
Byte 3 is bitmapped:
| Bit | Description |
|---|---|
| 4-7 | Palette offset, added to each palette index from pattern before drawing |
| 3 | Enable X mirror |
| 2 | Enable Y mirror |
| 1 | Enable rotation |
| 0 | anchor sprite: MSB of X coordinate relative sprite: enable relative Palette offset (1 = the anchor Palette offset is added, 0 = independent Palette offset) |