Difference between revisions of "Global Transparency Register"
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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 and | + | 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}}. |
Latest revision as of 17:24, 6 September 2020
| Number | $14 |
|---|---|
| Readable | Yes |
| Writable | Yes |
| Short Description | 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 Sprites Transparency Index Register ($4B) for transparency, 4-bit Tilemap uses Tilemap Transparency Index Register ($4C).