Thread: Amiga Vs ST
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Old 18 September 2010, 12:23   #347
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Join Date: Jun 2008
Location: Boston USA
Posts: 335
Originally Posted by skan View Post
"Most of the times"?
It's generally used for colour rasters and resetting the screen pointers/hw scroll values. If you're lucky it's used to get an extra background layer sans sprite DMA. It can be used to

1) trigger very accurate CPU interrupts
2) loop using skip/wait with a mask
3) drive the blitter for beam sync blits
4) generate horizontal rasters

It's very cool.
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