Palette Value Register
From SpecNext official Wiki
Revision as of 21:09, 22 December 2018 by wiki>Ped7g (Rewording a bit and adding info from web docs.)
| Number | $41 |
|---|---|
| Readable | Yes |
| Writable | Yes |
| Short Description | Use to set/read 8-bit colours of the ULANext palette. |
Bits 7-0 = Eight bit colour for the palette index selected by the Palette Index Register ($40).
Format is RRRGGGBB - Note the lowest blue bit of colour (ninth bit) will be set to an OR between bit 1 and bit 0.
After the write, the palette index is auto-incremented to the next index, if the auto-increment is enabled at Enhanced ULA Control Register ($43).
The modified palette remains until a Hard Reset.