Richard Atkinson wrote: > One of the luminance outputs of the GTIA had to be removed in order to > free up pins for the VCO interface, so the SECAM Atari 800/XL/XE only has > eight luminance levels (128 colours) rather than the sixteen (256 colours) > of the NTSC and PAL GTIAs. Although out of scope for cbm-hackers, does this in some way relate to the SECAM version of the TIA used in the Atari 2600? While the NTSC and PAL versions output a bit over 100 colours each (the exact numbers vary and I can't be bothered to look them up), the SECAM Atari 2600 only outputs the eight base colours black, white, red, green, blue, cyan, magenta, yellow. I never tried to figure out /why/ that is, but your very detailed explanation of SECAM and removed luminance on the GTIA sounds like something similar but yet more extreme had to be done with the 2600. Best regards -- Anders Carlsson Message was sent through the cbm-hackers mailing listReceived on 2011-11-02 14:00:27
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