Video modes - Revision history

Phi2x at 23:09, 4 July 2024

2024-07-04T23:09:43Z

Phi2x at 19:42, 4 July 2024

2024-07-04T19:42:16Z

Polluks at 13:46, 20 September 2023

2023-09-20T13:46:47Z

Polluks: /* 3-level RGB of the CPC */ typo

2023-06-06T23:51:44Z

‎3-level RGB of the CPC: typo

MacDeath: /* 3-level RGB of the CPC */

2020-08-09T16:05:35Z

‎3-level RGB of the CPC

Ythcal: /* Colours and Palettes */ corrected typos

2019-01-17T08:22:43Z

‎Colours and Palettes: corrected typos

Polluks: /* Specifications */

2015-10-07T12:04:48Z

‎Specifications

Polluks: /* Specifications */

2015-10-07T12:03:25Z

‎Specifications

MacDeath: /* 3-level RGB of the CPC */

2014-11-08T18:09:04Z

‎3-level RGB of the CPC

MacDeath: /* 3-level RGB of the CPC */

2014-11-08T18:08:37Z

‎3-level RGB of the CPC

@@ Line 1: / Line 1: @@
 ''Contains stuff from Wikipedia.''
-The standard [[video modes]] or '''Graphics Modes'''.
+The standard [[video modes]] or '''graphics modes'''.
 As a Colour Personal Computer, perhaps the Amstrad CPC best argument (beside being cheap, fully equipped and well rounded) was it's video capability. Yet this was also more demanding for the Z80 to handle compared to other lighter players such as ZX Spectrum.

@@ Line 1: / Line 1: @@
 ''Contains stuff from Wikipedia.''
-The standard [[video modes]] or '''Screen Modes'''.
+The standard [[video modes]] or '''Graphics Modes'''.
 As a Colour Personal Computer, perhaps the Amstrad CPC best argument (beside being cheap, fully equipped and well rounded) was it's video capability. Yet this was also more demanding for the Z80 to handle compared to other lighter players such as ZX Spectrum.

@@ Line 7: / Line 7: @@
 Also Amstrad's Video RAM was shared with the Z80 RAM. This and a cheap concept with fewer custom chips to ease the CPU could turn it into a sluggish snail if badly programmed.
-Yet colourful games with few scrolling requirements, reflection games such as KLAX... were perhaps the easiest medium for a CPC to shine above other 8 bit computers.
+Yet colourful games with few scrolling requirements, reflection games such as [[Klax (cartridge)|KLAX]]... were perhaps the easiest medium for a CPC to shine above other 8 bit computers.
 Too bad too few graphically-heavy Role-Playing Games were produced.

← Older revision		Revision as of 23:51, 6 June 2023
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−	*To set a CPC palette on modern Graphic ~~softwares~~.	+	*To set a CPC palette on modern Graphic software.

← Older revision		Revision as of 16:05, 9 August 2020
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	This kind of picture can be obtained on a real CPC (through mode0 and Rasters) in order to test the monitors, and also to understand at first sight how the Colours logic works.		This kind of picture can be obtained on a real CPC (through mode0 and Rasters) in order to test the monitors, and also to understand at first sight how the Colours logic works.
		+
		+	[[File:Stretched CPC palette macdeath.png]]

	==='''12-bit RGB of the PLUS'''===		==='''12-bit RGB of the PLUS'''===

@@ Line 193: / Line 193: @@
 *Also the official names of the colours may not be that accurate...
-"Purple" is more like some kind of Magenta while "Magenta" is more like some sort of MAuve and Mauve a Purple... and so on.
+"Purple" is more like some kind of Magenta while "Magenta" is more like some sort of Mauve and Mauve a Purple... and so on.
 "White" is actually grey while "bright white" is white...
@@ Line 217: / Line 217: @@
 As shown... the CPC original palette is good as it enable gradiants in Black and White + 3 shades for the 6 basic colours...
-Red, Green, Blue... and Yellow, Cyan and Magenta (purlple).
+Red, Green, Blue... and Yellow, Cyan and Magenta (purple).
 Added to those, there are a few special crossbreed colours such as "Mauve" (2 shades : Mauve and Pastel blue), orange (can mix with red and yellows), "Purple" (a bluer Red) and a lot of "light greeens"  (turning into Cyan or yellow).
@@ Line 252: / Line 252: @@
 [[File:Mire CPC.png]]
-This kind of picture can be obtained on a real CPC (through mode0 and Rasters) in order to test the monitors, aand also to understand at first sight how the Colours logic works.
+This kind of picture can be obtained on a real CPC (through mode0 and Rasters) in order to test the monitors, and also to understand at first sight how the Colours logic works.
 ==='''12-bit RGB of the PLUS'''===

@@ Line 28: / Line 28: @@
 This then allows with a video memory of 24&nbsp;KB (approximately) to displays on the standard screen up to :
 * Full screen '''Mode 0''': '''192×272''' pixels with 16 colors (4 bpp)
-* Full screen'''Mode 1''': '''384×272''' pixels with 4 colors (2 bpp)
+* Full screen '''Mode 1''': '''384×272''' pixels with 4 colors (2 bpp)
-* Full screen'''Mode 2''': '''768×272''' pixels with 2 colors (1 bpp)
+* Full screen '''Mode 2''': '''768×272''' pixels with 2 colors (1 bpp)
 Also the use of scanlines to increase vertical resolution is not "easly" possible on Amstrad CPC.
-When dealing with Full screen on real Hardware, the vertical limit of 256 pixels is the "safely displayed zone". As the actually displayed zone may vary depending the time your monitor ran (warmed ?) or from individual hardware to another.
+When dealing with Full screen on real Hardware, the vertical limit of 256 pixels is the "safely displayed zone". As the actually displayed zone may vary depending the time your monitor ran (warmed ?) or from individual hardware to another. The same goes for horizontal diplay as we deal with old electronic.
 The same goes for horizontal diplay as we deal with old electronic.
 ==Colour attributes==

@@ Line 18: / Line 18: @@
 *'''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)
+*'''Mode 3''': '''160×200''' 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.
@@ Line 24: / Line 24: @@
 Basically, the Amstrad CPC Video works like a CGA video card from a PC. But extra features like a 16 colours mode exist.
-The dimensions in pixels given could be raised with clever use of FullScreen Trick (often dubbed erronuously as "overscan mode".)
+The dimensions in pixels given could be raised with clever use of FullScreen Trick (often dubbed erronuously as "[[Programming:Overscan|overscan mode]]".)
-This then allows with a video memory of 24Ko (approximately) to displays on the standard screen up to :
+This then allows with a video memory of 24&nbsp;KB (approximately) to displays on the standard screen up to :
-* Full screen '''Mode 0''': '''192x272''' pixels with 16 colors (4 bpp)
+* Full screen '''Mode 0''': '''192×272''' pixels with 16 colors (4 bpp)
-* Full screen'''Mode 1''': '''384x272''' pixels with 4 colors (2 bpp)
+* Full screen'''Mode 1''': '''384×272''' pixels with 4 colors (2 bpp)
-* Full screen'''Mode 2''': '''768x272''' pixels with 2 colors (1 bpp)
+* Full screen'''Mode 2''': '''768×272''' pixels with 2 colors (1 bpp)
 Also the use of scanlines to increase vertical resolution is not "easly" possible on Amstrad CPC.

@@ Line 71: / Line 71: @@
 It is Cubic, generated by "Trigits" (ternary digits)
-This palette is used by the [[CPC|Amstrad CPC]] old series only and is almost not found in any other computers (but clones of course).
+* This palette is used by the [[CPC|Amstrad CPC]] old series only and is almost not found in any other computers (but clones of course).
-The Toshiba [[PASOPIA 7]] is known to feature the same 3-level RGB palette as the Amstrad CPC, its video modes are different than Amstrad CPC's ones though.
+* The Toshiba [[PASOPIA 7]] is known to feature the same 3-level RGB palette as the Amstrad CPC, its video modes are different than Amstrad CPC's ones though.
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