Changes

Basically, the Amstrad CPC Video work like a CGA video card from a PC. But extra features like a 16 colours mode exist.

But extra ==Colours==  *'''3-level RGB''' The Amstrad CPC (old) palette features 27 colours, despite the fact that the Video system ([[Gate Array]] and [[CRTC]]) could actually handle 32 colours. Because this is a 3-level RGB custom palette. This palette is used by the [[CPC|Amstrad CPC]] old series only and is not found in any other computers (but clones of course). :{| style="border-style: none" border="0" cellpadding="0"|-|| http://upload.wikimedia.org/wikipedia/commons/b/b0/AmstradCPC_palette_color_test_chart.png|| http://upload.wikimedia.org/wikipedia/commons/a/a1/AmstradCPC_palette.png|} The 3-level (not '''bits''') RGB uses three level for every red, green and blue color components, resulting in a 3³ = 27 colours palette.  * '''12-bit RGB''' Used by the Amstrad Plus series. It's like the good old Amiga 500 palette. :{| style="border-style: none" border="0" cellpadding="0"|-|| http://upload.wikimedia.org/wikipedia/en/d/d7/RGB_12bits_palette_color_test_chart.png|| http://upload.wikimedia.org/wikipedia/en/4/47/RGB_12bits_palette.png|} Systems with a 12-bit RGB palette use 4 bits (16 values) for each of the red, green, and blue color components. This results in a 16 ³ = 4096 colours mode existpalette.

It is the mode that made CPC a '''Colour ''' Personnal computer.

[http://www.en.wikipedia.org/wiki/List_of_8-bit_computer_hardware_palettes Wikipedia's pageon the different 8 Bit systems Hardware Palettes and Modes] including amstrad CPC of course... [http://en.wikipedia.org/wiki/List_of_monochrome_and_RGB_palettes#18-bit_RGB Wikipedia's page on RGB palette] including Amstrad CPC specific one