>3. Is it possible to adjust the contrast of individual pixels, or do
>you have to adjust the contrast of the whole screen?Unfortunatly, only the whole screen. U use Port 2 for that. A bit of code:
ContDown:
ld a,($C008) ;since port 2 is read only, we must get the
dec a ;current contrast from a memory address
ld ($C008),a ;decriment it, then load it back to the mem
out (2),a ;and to the port also
ret ;return to calling codeIt is important that u load the new contrast to both places, else bad
things can happen!!Later,
CHICANE