home .. forth .. misc mail list archive ..

Re: videoprocessor



> If you program the video coprocessor to act as a windows accelerator
> then you need a few extra jump instructions and delay instructions and
> a bigger video frame.  Then you can move things around by manipulating
> a few video coprocessor jump instructions.  It makes the relationship
> between address and X Y location in a window a bit more complex.

Just what I was considering... have thought a bit on how to build a simple but 
fast architecture for 2D acceleration/window handling, thought the misc-thing 
was a good place to start. Where some kind of similar construction in the 
amiga video chips, but it wasn't fast enough to handle X-positioning properly. 
Where used for color setup (not fixed as yours seems to be, but 
register-number based), Y-position handling for graphic contexts ("screens") 
etc. What I want is some way to handle arbitrary such graphical contexts on 
screen without need for this awful copy-everything, rescale-colors thing...

> 
> Jeff Fox


Mucho Gracias

	/Tor Silfverberg