Global Transparency Colour Register
From SpecNext Wiki
| Next Register 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 NextReg:$4B for transparency, 4-bit Tilemap uses NextReg:$4C.