Quote:
Originally Posted by pmc
But on a 68000 equipped Amiga this wouldn't be faster than using the blitter to clear memory surely.
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Pretty common method to clear the screen on 68000 is this:
Clear the upper half using the blitter, clear the bottom half using the CPU [movem.l dx-ax,-(a7)]
Quote:
Originally Posted by frank_b
There is a draw back to the movem method to clear memory. Can you guess what it is?
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Depending on the size of memory you want to clear and the number of used registers in the movem loop, you may have to clear the last bytes with some extra move.b/w./.l instructions.