Difference between revisions of "Video modes"
| Line 6: | Line 6: | ||
*'''Mode 3''': '''160x200''' pixels with 4 colors (2bpp) (this is not an official mode, but rather a side-effect of the hardware) | *'''Mode 3''': '''160x200''' pixels with 4 colors (2bpp) (this is not an official mode, but rather a side-effect of the hardware) | ||
| + | The Video modes are known to display pixels with different sizes. | ||
| + | |||
| + | ==Mode 0 graphics== | ||
| + | |||
| + | Mode 0 graphics are blockier thanks to the "2x1" ratio. | ||
| + | |||
| + | Yet the good amount of colours allows to use AntiAliasing technics to soften the shapes. | ||
| + | |||
| + | It is the mode that made CPC a Colour Personnal computer. | ||
| + | |||
| + | ==Mode 1 graphics== | ||
| + | |||
| + | The pixels are square, but the only 4 colours a bit... few. | ||
| + | |||
| + | Yet a massive amount of horizontal "split rasters" allows to multiply the number of colours displayed on the screen. | ||
| + | |||
| + | It's like using the colour attribute specificity (as on [[ZX spectrum]]) but with horizontal limitations. | ||
| + | |||
| + | |||
| + | ==Mode 2 graphics== | ||
| + | |||
| + | The pixels are 1x2, extremly slim. | ||
| + | |||
| + | This mode is difficult to use in a coloured way. | ||
| + | |||
| + | Better used as a Text Mode, yet it can be included in a splitted screen (games). | ||
| + | |||
| + | ==Border== | ||
| + | |||
| + | The border allows 1 another additionnal colour to be displayed on the screen with no tricks. | ||
| + | |||
| + | ==Amstrad Plus== | ||
| + | |||
| + | The Amstrad Plus display the same modes, but 15 more colours can naturally be displayed thanks to the Hardwired Sprites. | ||
| + | |||
| + | This means 32 colours per screen with no tricks (including Border). | ||
==Related pages== | ==Related pages== | ||
| Line 12: | Line 48: | ||
*[[Gate Array]] | *[[Gate Array]] | ||
*[[ASIC]] | *[[ASIC]] | ||
| + | |||
| + | ==External Links== | ||
| + | |||
| + | [http://sylvestre.grimware.org/cpc/ Les Sucres en Morceaux] the French site from supersly, shows many exemples and technics to use the different Video mode of the amstrad CPC. | ||
[[Category:Graphic]][[Category:Programming]] | [[Category:Graphic]][[Category:Programming]] | ||
Revision as of 18:54, 8 October 2009
The standard video modes are :
- Mode 0: 160×200 pixels with 16 colors (4 bpp)
- Mode 1: 320×200 pixels with 4 colors (2 bpp)
- Mode 2: 640×200 pixels with 2 colors (1 bpp)
- Mode 3: 160x200 pixels with 4 colors (2bpp) (this is not an official mode, but rather a side-effect of the hardware)
The Video modes are known to display pixels with different sizes.
Contents
Mode 0 graphics
Mode 0 graphics are blockier thanks to the "2x1" ratio.
Yet the good amount of colours allows to use AntiAliasing technics to soften the shapes.
It is the mode that made CPC a Colour Personnal computer.
Mode 1 graphics
The pixels are square, but the only 4 colours a bit... few.
Yet a massive amount of horizontal "split rasters" allows to multiply the number of colours displayed on the screen.
It's like using the colour attribute specificity (as on ZX spectrum) but with horizontal limitations.
Mode 2 graphics
The pixels are 1x2, extremly slim.
This mode is difficult to use in a coloured way.
Better used as a Text Mode, yet it can be included in a splitted screen (games).
Border
The border allows 1 another additionnal colour to be displayed on the screen with no tricks.
Amstrad Plus
The Amstrad Plus display the same modes, but 15 more colours can naturally be displayed thanks to the Hardwired Sprites.
This means 32 colours per screen with no tricks (including Border).
Related pages
External Links
Les Sucres en Morceaux the French site from supersly, shows many exemples and technics to use the different Video mode of the amstrad CPC.
