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today while ranting about something on tumblr I realized something weird about PC video connectors:

CGA is RGB (I).
VGA is also RGB.

EGA is not. It's rRGBgb, because it has two bits per channel, but they're ordered like that, instead of RrGgBb or RGBrgb.

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(it's because the EGA connector is somewhat compatible with the CGA connector: They stuck the second bit of each color into unused pins or replacing the intensity pin)

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