A86: accessing video memory


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A86: accessing video memory



i tried accessing the video memory and xoring it with %11111111 (making it opposite color). it worked ok until i tried using
call _PDspGrph at the beginning of the program so i could the same at the graph screen.  it starts up and then turns off like
I hit the off key except the it totally locks up too.  the end question being y cant i do this on the gaph screen? and if not
is there another address for accessing the graph memory w/o ipoint?

Thnx
Patrick


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