Difference between revisions of "Palette Value Register"
From SpecNext official Wiki
(Rewording a bit and adding info from web docs.) |
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| Line 1: | Line 1: | ||
{{NextRegister | {{NextRegister | ||
|Number=$41 | |Number=$41 | ||
| − | |Readable= | + | |Readable=Yes |
|Writable=Yes | |Writable=Yes | ||
| − | |ShortDesc= | + | |ShortDesc=Use to set/read 8-bit colours of the ULANext palette. |
}} | }} | ||
| + | Bits 7-0 = Eight bit colour for the palette index selected by the {{NextRegNo|$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 {{NextRegNo|$43}}. | ||
| + | |||
| + | The modified palette remains until a Hard Reset. | ||
Revision as of 21:09, 22 December 2018
| 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.