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Problems with DVI (DM6446)

Buntspecht
Prodigy 10 points
Other Parts Discussed in Thread: TFP410

Hey there,

i have a problem with the video output. The color bar from VPBE is show correctly on PAL signal (white/yellow/cyan/green/magenta/red/blue/black from left to right). If i draw the color bar with DVI output to a LCD monitor (PRGB), using the TFP410 DVI driver, i will have a wrong order of colors. The order will be yellow/white/green/cyan/red/magenta/black/blue from left to right. I think there will be a problem with blue color because the colors are switched by pairs.

Have you any ideas for this problem?

Thank you!
Buntspecht

  • 0
    TI__Mastermind 41665 points

    It does sound like your blue is being inverted somehow, since your color bars should have color values like:

    RR--RR--
    GGGG----
    B-B-B-B-

    But it sounds like they look like:

    RR--RR--
    GGGG----
    -B-B-B-B

    So to get the bar swapping you are seeing it would mean that blue is driving the opposite value it should be. At least this means you are not missing any data, but I am not sure how this problem could manifest itself, this could be happening anywhere along the signal chain at this point. If you try other output images other than color bars do they also look to align with the theory that the blue channel is being inverted?