Difference between revisions of "Sprite port-mirror Attribute 2 Register"
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(Core 2.00.22 changes, and forum knowledge from Jim Bagley distilled.) |
(Core 2.00.27 (or 28) changes to relative sprite system.) |
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| Line 17: | Line 17: | ||
| 1 || Enable rotation | | 1 || Enable rotation | ||
|- | |- | ||
| − | | 0 || MSB of X coordinate | + | | 0 || '''anchor''' sprite: MSB of X coordinate<br /> |
| + | '''relative''' sprite: enable relative Palette offset (1 = the anchor Palette offset is added, 0 = independent Palette offset) | ||
|} | |} | ||
Revision as of 01:59, 11 February 2019
| 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) |