Concepts : Raster*The original page describe the rupture effect (seperate section scrolling), split raster, Raster lines or Scanlinesbut rasters do not do this.
In programation, the raster My understanding of rasters is often referred as the act to modify the setting of inks between 2 scanlinesmake coloured bars, either vertically, horizontally, diagonally or messages scrolling.
This is a way to display more than *I'm probably not the usual [[Video modes]] number of coloursbetter qualified to talk about this.I just put some overviews (some may be false) and links.
The time between problem is that the display of 2 Scanlines by the CRTC allow the CPU to order the Gate array to modify the setting of inksword Raster is over used in Demoscene but may have a bit different scientific definition.
The screen display at 50Hzcoloured horizontal bars are called rasters...The [[CPU]] ([[Z80]]) runs at about 4 MgHzbut this is only a little use of rasters.
So It has enough cycles Also what is the difference between 2 scanlines to order rasters and split rasters ? thisis not always clear in my mind.
You can also use Split rasterto "actually" display 2 different screens, sometoimes with different Video Modes.[[MacDeath]]
==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]]The updated page tells you now [[Category:StubKevin Thacker]]