Posted By
siz
on 2022-02-10
06:56:07
|  Re: Is there such a thing as an interlaced picture for the +4?
> The PAL color inversion is a very easy trick, just change line evenness in $FF1C-1D and get it. Plus4emu supports this - there was a minor error in the emulation but it works for most cases. Every line for a PAL picture has color information (burst) and for odd and even frames it is created in a different way. When we change the line evenness this forces the TED to think that it must generate the color signal for another evenness.
Are you sure about this? I have to admit that I'm not that familiar with PAL standard but IMHO TED (and VIC too) generates the same frame twice for the odd and even PAL lines. $FF1C-1D just changes the line number within the current half-frame and not between frames. But that's just my opinion.
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