Sprite Attribute 2 Register: Difference between revisions
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Core 2.00.22 changes, and forum knowledge from Jim Bagley distilled. |
m Xalior moved page Sprite port-mirror Attribute 2 Register to Sprite Attribute 2 Register: match formal nextreg.txt name |
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| 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) | |||
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Latest revision as of 10:52, 14 October 2025
| Number | TBRegisterNumber::$37 |
|---|---|
| Readable | TBRegisterReadable::No |
| Writable | TBRegisterWritable::Yes |
| Short Description | [[ShortDesc::Nextreg port-mirror to write directly into "byte 3" of {{#ask:
PortNumber::$xx57 }} ($xx57{{#ask: PortNumber::$xx57 |mainlabel=- |headers=hide |intro= / |?NumberDec#- }}).]] |
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) |