Global Transparency Colour Register: Difference between revisions
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Updated information about 1-bit tilemaps. |
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This value is 8-bit only, so the transparency is compared only by the MSB bits of the final colour. | This value is 8-bit only, so the transparency is compared only by the MSB bits of the final colour. | ||
This only affects Layer 2, ULA, LoRes and 1-bit ("text mode") tilemap. Sprites use {{NextRegNo|$4B}} for transparency, 4-bit Tilemap uses {{NextRegNo|$4C}}. | This only affects Layer 2, ULA, LoRes and 1-bit ("text mode") tilemap. Sprites use {{NextRegNo|$4B}} for transparency, 4-bit Tilemap uses {{NextRegNo|$4C}} except in text mode. | ||
Revision as of 11:24, 3 November 2024
| Number | TBRegisterNumber::$14 |
|---|---|
| Readable | TBRegisterReadable::Yes |
| Writable | TBRegisterWritable::Yes |
| Short Description | ShortDesc::Sets the "transparent" colour for Layer 2, ULA and LoRes pixel data. |
Transparency color value (0xE3 after a reset).
This value is 8-bit only, so the transparency is compared only by the MSB bits of the final colour.
This only affects Layer 2, ULA, LoRes and 1-bit ("text mode") tilemap. Sprites use {{#ask: TBRegisterNumber::$4B }} ($4B) for transparency, 4-bit Tilemap uses {{#ask: TBRegisterNumber::$4C }} ($4C) except in text mode.