From: Jim Brain (
Date: 2004-11-01 04:33:20

>>Want to know one of the more time-consuming operations in 3D graphics?
>>Clearing the screen.  No matter how fast of a plotting algorithm I have,
>>it still takes at least 8*40*25*4=32000 cycles to clear a full screen --
>>about two frames.  If you had a way to instantly clear out a section of
Since we're talking about extra HW here anyway, you can do this in 8000 
cycles with an REU, correct, by tying the source address in the REU to a 
zero byte, and DMAing 8000 copies.


Jim Brain, Brain Innovations                      
Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times!

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