RE: 6502 core / 128 mode (re: J-Board) (fwd)

From: Jeri Ellsworth (cm_easy_at_yahoo.com)
Date: 2001-03-13 17:41:06

Hi,
  I'e decided to us 16 bit color to save space to add
other fun goodies instead.  The scheme will go like
this.  Five bit's RGB and on bit tied to the msb of
the DAC.  This keeps the color LUT's smaller and
inside the fpga.

Jeri


--- Professor Dredd <profdredd@yahoo.com> wrote:
> Wow MV!
> 
> You're either highly intelligent or quite insane
> (both
> maybe?) I'll assume intelligent  ;-)
> 
> I have suggested 16-bit color because in my
> experience
> browsing the web on a PC, that is enough to view
> most
> pages quite well.
> 
> I suggested 16-bit color as a minimum requirement
> because if it can be better without compromising
> other
> features then it should be.
> 
> --- MagerValp <MagerValp@cling.gu.se> wrote:
> > >>>>> "WL" == William Levak
> <wlevak@cyberspace.org>
> > writes:
> > 
> > WL> 24 bits is enough to produce 4,000,000 colors,
> > which is more than
> > WL> enough since the human eye can only see
> > 3,000,000.
> > 
> > 24 bits = 16777216 different colours, but it's not
> > enough -- human
> > eyes can make out more shades; the 3000000 figure
> > just isn't compar-
> > able. 24 bits means 8 bits each for red, green and
> > blue. If you have a
> > nice, linear shade across the screen from 0
> > intensity green to 255
> > intensity green, it'll appear nice and smooth with
> > no visible banding.
> > Now try it with light beige to light grey --
> there's
> > lots of banding.
> > For a perfectly images, you need somewhere between
> > 30 and 36 bits per
> > pixel.
> > 
> > -- 
> >     ___          .     .  .         .       . +  .
>  
> >       .      o   
> >   _|___|_   +   .  +     .     +         .   . 
> Per
> > Olofsson, konstnär
> >     o-o    .      .     .   o         +         
> > MagerValp@cling.gu.se
> >      -       +            +    .    
> > http://www.cling.gu.se/~cl3polof/
> > -
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> 
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