Revisiting the quest for the most accurate NES palette:

Discuss technical or other issues relating to programming the Nintendo Entertainment System, Famicom, or compatible systems. See the NESdev wiki for more information.

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lidnariq
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Re: Revisiting the quest for the most accurate NES palette:

Post by lidnariq »

Zepper wrote:RAW... OK... but how to parse the file, as RGB or any other format?
Implement a PAL or NTSC decoder. Raw values are just direct immediate voltages, higher = brighter.
NewRisingSun
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Re: Revisiting the quest for the most accurate NES palette:

Post by NewRisingSun »

tepples wrote:In case it isn't obvious to others reading this, the reason you don't get Hanover bars from a broadcast signal is the 90 degree swing of broadcast TV's color burst compared to the nonstandard 120 degree swing from the 2C07.
You're confusing the phase of the color subcarrier relative to the horizontal sync signal with the phase of the color subcarrier relative to itself. The 2C07 does not switch the phase of the color subcarrier relative to itself by 120 degrees from scanline to scanline, and so the 2C07's non-standard scanline duration has nothing to do with the presence or absence of Hanover bars.
lidnariq
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Re: Revisiting the quest for the most accurate NES palette:

Post by lidnariq »

... You know, I actually saw evidence of this phase error when I made my bitbanged RS170 test. The colorburst was always a little greener than the corresponding field of hue 8, and it changed depending on the nominal brightness of that field of hue 8.

And I didn't know what I was looking at and told myself it was experimental error at the time. Oops!
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zeroone
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Re: Revisiting the quest for the most accurate NES palette:

Post by zeroone »

It looks like FireBrandX updated his palettes yet again. It sounds like "PVM Style D93 (FBX)" would be probably be the most applicable one.
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