A fast and easily customised operating system
for ARM devices
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ColourTrans Overview
Programmer's Reference Manuals
» Part 8 - Non-kernel input/output
» ColourTrans
» Overview
Overview
Within this section of the Programmer's Reference Manuals the following terms are used, and thus need to be understood.
- GCOL is a colour number used only within 256 colour screen modes.
- Colour number is the actual value written to the screen to achieve a specific colour in
specific mode - Palette entry is a word that contains a description of a physical colour in levels of red, green and blue. It is usually used to refer to the required colour that is passed to the ColourTrans SWI
- Palette pointer is a pointer to a list of palette entries. For any given screen mode, there should be one entry for each logical colour. A 256 colour mode would only have 16 entries, as there are only 16 palette registers
- Closest colour is the colour in palette that is the closest match to the palette entry passed
- Furthest colour is the colour in the palette that is the least closest match to the palette entry