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https://github.com/JetSetIlly/Gopher2600.git
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62f7218456
clarified how VideoBlack and ZeroBlack are related in the 2600 ZeroBlack is now a generated and cached colour for both legacy and new colour models, rather than an implied zero RGB value the result of this is that VideoBlack and ZeroBlack are now affected by colour adjustment in the same way, as it is on real hardware. this happens because the 2600 outputs 0.0 IRE for VideoBlack and not 7.5 IRE as you might expect. the most immediate recent change to colour generation used a VideoBlack value of 7.5 we don't yet emulate RGB mods that do use 7.5 for VideoBlack legacy PAL palette corrected so that the four VideoBlack values are zero |
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