Re: RGB colors

["Knut" <see-sig@online.no>]

Linards

...
> I got another one here, this is the "theoretical" colors I calculated from 
> the way the Apple and NTSC actually work according to the specifications:
>
> http://service.gmx.net/mc/QBkBCp4Qzaa0USSZiN7gyFL1haS6HA
>
...
> "apple-col-ntsc.png" give the colors in a way that should look right when 
> viewed on an NTSC TV screen, "apple-col-srgb.png" in a way that should 
> look right on most modern PC monitors.
...

I'm wondering about that the gray "colors" are the same. All the emulators 
do Grey 1 darker than Grey 2 but when I look at NTSC I agree with your 
calculation, they are same. Is this correct? Is the difference something 
that came with RGB cards and RGB output of IIc and/or IIgs? I think there 
was a difference on PAL but I might be mistaking there (it's a pity I never 
grabbed an image there, the frame grabber does both NTSC and PAL). Or is 
there a difference between II, II+ or IIe. Mine is a IIe now with enhanced 
US motherboard (NTSC).

I was toying with the idea to make a summing-network for XRGB (RGBI) to 
create the proper colors on an analog monitor (or TV with RGB in scart). I 
would use a PAL (actually GAL) to control a couple of resistors for each 
color but I need to know what to make... To mimic the KEGS emulator might be 
a good idea.

Knut