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Atari coding BBS
| Re: Sync Scroll CPU Usage |
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Posted by: leonard
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Aug,27.2009-21:59
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Hi!
It depends about what kind of scrolling you want to do: fullscreen or not (adress multiple of 2 or 8 bytes), vertical only scroller etc.
But for the general case, ULM, me and others do it in 5+1 lines (+1 stands for the first synchro line).
4+1 scroller can be acheived using some weird line size, but is not working on every ST.
Last but not least, this is the number of lines used, but it use a little CPU more to setup the scroler. (maybe 1/2 scanline :-)).
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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