[comp.sys.amiga.tech] Blitter and RastPort->Mask

jjfeiler@tybalt.caltech.edu (John J. Feiler) (06/13/89)

I've been mucking around with the blitter trying to get some images blitted
quickly to a 4-plane screen, and something is changing the Mask field
in the RPort structure of the window.  Is the blitter doing this?  I'm stuffing
the values into the blitter registers by hand, and the images are displaying
fine on the screen, but when I try to write text to the window, nothing 
works since the Mask field gets set to 0x0, instead of 0xFF.

Any, ideas??  Am I missing something simple?



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John Feiler				"Life's like a jigsaw, you get the
709 Locust #7				straight bits, but there's something
Pasadena, CA 91101			missing in the middle..."
jjfeiler@tybalt.caltech.edu				-- XTC
What's the difference between a duck?
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