Palette Index Register: Difference between revisions
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Rewording a bit and adding info from web docs. |
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{{NextRegister | {{NextRegister | ||
|Number=$40 | |Number=$40 | ||
|Readable= | |Readable=Yes | ||
|Writable=Yes | |Writable=Yes | ||
|ShortDesc=Chooses | |ShortDesc=Chooses an ULANext palette index to configure. | ||
}} | }} | ||
Palette indices 0-127 are INK colours. Entries 0-7 are the standard Spectrum INK colours (except full ink colour mode, when all 0-255 indices are INK colour). | |||
Palette | Palette indices 128-255 are PAPER colours. Entries 128-135 are the standard Spectrum PAPER colours and BORDER colours (even in "full INK" mode). | ||
Higher colours can only be used by enabling ULANext mode via {{NextRegNo|$43}}. | |||
Layer 2 and Sprite palettes work as "full ink" always, INK/PAPER concept does apply only to Enhanced ULA palette. | |||
Revision as of 21:03, 22 December 2018
| Number | TBRegisterNumber::$40 |
|---|---|
| Readable | TBRegisterReadable::Yes |
| Writable | TBRegisterWritable::Yes |
| Short Description | ShortDesc::Chooses an ULANext palette index to configure. |
Palette indices 0-127 are INK colours. Entries 0-7 are the standard Spectrum INK colours (except full ink colour mode, when all 0-255 indices are INK colour).
Palette indices 128-255 are PAPER colours. Entries 128-135 are the standard Spectrum PAPER colours and BORDER colours (even in "full INK" mode).
Higher colours can only be used by enabling ULANext mode via {{#ask: TBRegisterNumber::$43 }} ($43).
Layer 2 and Sprite palettes work as "full ink" always, INK/PAPER concept does apply only to Enhanced ULA palette.