Talk:Rasters - Revision history

MacDeath at 13:45, 14 October 2009

2009-10-14T13:45:08Z

Arnoldemu at 13:34, 14 October 2009

2009-10-14T13:34:23Z

MacDeath at 13:02, 14 October 2009

2009-10-14T13:02:56Z

Arnoldemu at 09:04, 14 October 2009

2009-10-14T09:04:07Z

MacDeath: Blanked the page

2009-10-14T08:40:50Z

Blanked the page

MacDeath at 01:03, 13 October 2009

2009-10-13T01:03:54Z

Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /mnt/cpcwiki-httpdocs/includes/diff/DairikiDiff.php on line 434

MacDeath at 01:02, 13 October 2009

2009-10-13T01:02:47Z

MacDeath: Created page with 'Concepts : Raster, split raster, Raster lines or Scanlines. In programation, the raster is often referred as the act to modify the setting of inks between 2 scanlines. This is …'

2009-10-13T01:00:55Z

Created page with 'Concepts : Raster, split raster, Raster lines or Scanlines. In programation, the raster is often referred as the act to modify the setting of inks between 2 scanlines. This is …'

New page

Concepts : Raster, split raster, Raster lines or Scanlines.

In programation, the raster is often referred as the act to modify the setting of inks between 2 scanlines.

This is a way to display more than the usual [[Video modes]] number of colours.

The time between the display of 2 Scanlines by the CRTC allow the CPU to order the Gate array to modify the setting of inks.

The screen display at 50Hz...The [[CPU]] ([[Z80]]) runs at about 4 MgHz.

So It has enough cycles between 2 scanlines to order this.

You can also use Split rasterto "actually" display 2 different screens, sometoimes with different Video Modes.

==Links==

*[http://en.wikipedia.org/wiki/Raster Wikipedia link to Raster concepts]

==CPCWiki Links==

*[[Gate Array]]
*[[CRTC]]
*[[ASIC]]

*[[Programming:Simple Raster Example 1]]
*[[Programming:Simple Raster Example 2 (uses CPC plus features)]]
*[[Programming:Simple Raster Example 3 (uses CPC plus features)]]
*[[Programming:Simple Split Raster Example 1]]

[[Category:Graphic]][[Category:Programming]][[Category:Stub]]

← Older revision		Revision as of 13:45, 14 October 2009
Line 14:		Line 14:
	[[MacDeath]]		[[MacDeath]]

−	The updated page tells you now [[Kevin Thacker]]	+	*The updated page tells you now [[Kevin Thacker]]

← Older revision		Revision as of 13:34, 14 October 2009
Line 13:		Line 13:

	[[MacDeath]]		[[MacDeath]]
		+
		+	The updated page tells you now [[Kevin Thacker]]

← Older revision		Revision as of 13:02, 14 October 2009
Line 1:		Line 1:
−	The original page describe the rupture effect (seperate section scrolling), but rasters do not do this.	+	*The original page describe the rupture effect (seperate section scrolling), but rasters do not do this.

	My understanding of rasters is to make coloured bars, either vertically, horizontally, diagonally or messages scrolling.		My understanding of rasters is to make coloured bars, either vertically, horizontally, diagonally or messages scrolling.
		+
		+	*I'm probably not the better qualified to talk about this.
		+	I just put some overviews (some may be false) and links.
		+
		+	The problem is that the word Raster is over used in Demoscene but may have a bit different scientific definition.
		+
		+	The coloured horizontal bars are called rasters...but this is only a little use of rasters.
		+
		+	Also what is the difference between rasters and split rasters ? this is not always clear in my mind.
		+
		+	[[MacDeath]]

← Older revision	Revision as of 09:04, 14 October 2009
Line 1:	Line 1:
	+	The original page describe the rupture effect (seperate section scrolling), but rasters do not do this.

	+	My understanding of rasters is to make coloured bars, either vertically, horizontally, diagonally or messages scrolling.

← Older revision		Revision as of 08:40, 14 October 2009
Line 1:		Line 1:
−	~~Ok, a first try, please tell if this exist...~~
−	~~Also, should we use raster or maybe other terms ?~~
−	~~Concepts : Raster, split raster, Raster lines or Scanlines ?~~

−	~~In programation, the raster is often referred as the act to modify the setting of inks between 2 scanlines.~~
−
−	~~This is a way to display more than the usual [[Video modes]] number of colours.~~
−
−	~~The time between the display of 2 Scanlines by the CRTC allow the CPU to order the Gate array to modify the setting of inks.~~
−
−	~~The screen display at 50Hz...The [[CPU]] ([[Z80]]) runs at about 4 MgHz.~~
−
−	~~So It has enough cycles between 2 scanlines to order this.~~
−
−	~~You can also use Split rasterto "actually" display 2 different screens, sometoimes with different Video Modes.~~
−
−
−
−
−	~~==Links==~~
−
−
−	*[http://en.wikipedia.org/wiki/Raster Wikipedia link to Raster concepts]
−
−	~~==CPCWiki Links==~~
−
−	*[[Gate Array]]
−	*[[CRTC]]
−	*[[ASIC]]
−
−
−	*[[Synchronising with the CRTC and display]]
−
−
−	*[[Programming:Simple Raster Example 1]]
−	*[[Programming:Simple Raster Example 2 (uses CPC plus features)]]
−	*[[Programming:Simple Raster Example 3 (uses CPC plus features)]]
−	*[[Programming:Simple Split Raster Example 1]]
−
−
−	~~[[Category:Graphic]][[Category:Programming]][[Category:Stub]]~~

← Older revision		Revision as of 01:03, 13 October 2009
Line 1:		Line 1:
−	Concepts : Raster, split raster, Raster lines or Scanlines.	+	Ok, a first try, please tell if this exist...
		+	Also, should we use raster or maybe other terms ?
		+	Concepts : Raster, split raster, Raster lines or Scanlines ?

	In programation, the raster is often referred as the act to modify the setting of inks between 2 scanlines.		In programation, the raster is often referred as the act to modify the setting of inks between 2 scanlines.

← Older revision		Revision as of 01:02, 13 October 2009
Line 26:		Line 26:
	*[[CRTC]]		*[[CRTC]]
	*[[ASIC]]		*[[ASIC]]
		+
		+
		+	*[[Synchronising with the CRTC and display]]