On Tuesday 17 April 2001 22:12, you wrote:
> > That's incorrect; VDP(10)=vdp(10)xor2 only changes the refresh rate, not
> > the colours, as well. Also, VDP(10)=0 does the same thing (to change to
> > 60Hz); VDP(10)=2 does the same to change it to 50Hz.
>
> bad, bad. that way you change all kinds of settings (for example the number
> of lines displayed). You should use VDP(10)=VDP(10) AND 253 for 60Hz and
> VDP(10)=VDP(10) OR 2 for 50Hz.
>
> okay, I confess, I also use VDP(10)=0.
> but that's not the point.
>
Laurens already responded in my place. Thanks Laurens
And I also tried to be generic so that PAL people could switch to NTSC and
viceversa !! Also color encodation can not be changed an a software base IIRC.
Ther are some badly document bits in the VDP but nobody seems to notice any
effect if those values are changed.
David Heremans
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