Problem to change colors palette

NewHome Forums C64 & ZX Spectrum Video Enhancement Problem to change colors palette

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  • #39885
    Serge COLIN
    Participant

    Hello all,

    I tried to change the colors of light blue (14) and light green (13) with the vid-enh-palgen-asm program.
    To do so, I changed the contrast and saturation levels. I saved the original values beforehand. When I adjust the levels
    I don’t see any visual change even when testing with option T.
    I then tried to flash the new colors.
    After that I restarted the C64. The colours did not change.

    Is it necessary to establish a physical link with the C64 motherboard to make the flash?
    My version is a v1.18. Do I have to change the firmware for the flash to work?

    Thanks for your help!

    #39896
    Hojo_Norem
    Participant

    Did you toggle your mode select switch as instructed on the palette editor’s first screen?

    #39903
    Serge COLIN
    Participant

    Hello Hojo
    Thanks for your help!
    But What does that mean? The switch on my card is positioned to the middle position, so to have a picture (the other position give me blured screen or blank screen).
    I don’t understand the meaning of the sentence ‘Please toggle your output mode switch). Flash is not allowed in the middle position?

    I’m using an ultimate cartridge… that could be the cause?

    #39904
    Hojo_Norem
    Participant

    To paraphrase the enhancement mod’s GitHub page (can be considered the de-facto instruction manual):

    “Before you can change the palette register contents, you need to switch the output mode switch to a different mode and back again (back is optional).”
    https://github.com/c0pperdragon/C64-Video-Enhancement#details-on-color-signal-reprogramming

    Switching between two modes/states/whatever can be referred to as ‘toggling’.

    Your Ultimate Cart has no bearing on the issue (I have a first issue 1541U-II). Just toggle your mode select switch when instructed on screen and enjoy!

    #39911
    Serge COLIN
    Participant

    Thank you very much
    I will try to do that… I will keep you informed

    I saw thru your link that by this way it prevents untrusted code to modify the settings

    Sorry for my mesundertanding about toggleing!

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