Re: RGB colors

[Alex Freed <alexf@mirrow.com>]

Knut Roll-Lund wrote:
> Actually I find that the CGA monitor has a quirk there with the number 5 
> color, brown has distinctly more red than green interpolated with the 
> rest of the colors it would have the RGB values R=170, G=170, B=0 but I 
> think what I found on the net 170, 85, 0 is correct. All colors except 
> brown are regular R,G,B gives 170 on the respective R,G,B while 
> intensity adds 85 to all three (170+85=255 and 0+85=85). (0=0/3, 85=1/3, 
> 170=2/3 and 255=3/3...)

No big surprize here: CGA is digital. It understands 1 bit for R, G and 
B plus one bit for intensity. So it can display 8 color plus the same 
colors at half brightness.

By contrast Apple needs an analog RGB to show colors close to NTSC colors.

-Alex.