I tried to make myself understood in the first post. I was clearing the screen with an image that was 2/3 just black pixels. I thought it would be faster than performing a Cls and then performing a DrawBlock or DrawImage (because that's two commands) on the upper 1/3 of the screen.
I found out that using a Cls takes almost no time at all (remember, the 6 millisecs is 1000 Cls's), so there's nothing to lose by using a Cls and then RE-drawing over the same cleared screen with an image.
I found out that using a Cls takes almost no time at all (remember, the 6 millisecs is 1000 Cls's), so there's nothing to lose by using a Cls and then RE-drawing over the same cleared screen with an image.