Re: Double hires mode color artifacts

[Jerry <SNIPawanderin@yahoSNIPo.ca>]

Michael J. Mahon wrote:

[...]
>>>Although it *would* be nice to have the contrast, brightness, hue, and
>>>saturation controls.  ;-)  (Adjusting them would perform a transform on
>>>a standard table to produce the actual table to be used.)
>> 
>> 
>> Yes, I plan to put those in, and was thinking that I could just update
>> the lookup table and the video emulation would simply repaint with the
>> alterations.
> 
> It would be necessary to keep a master copy of the "standard" table,
> otherwise, bits would be lost if you turned a control up and then
> down again.

Mmmm... I think it will be necessary only to have
a "reset-to-default-settings" of the input controls.  The algorithm is
going to generate the bit-pattern/phase to RGB values.  One thing I've been
toying with is allowing for a tweaking of the filters.  Let's say you want
to have the luminance filter 4.5 MHz instead of 3.58, or crank it down to
3.0 MHz.  Ditto for playing with the chroma filters.  But I am getting
ahead of myself.

I do think for simplicity's sake in an emulator, it would be nice to be able
to choose NTSC color, IIgs RGB, AppleColor, etc emulation.  I only have at
my disposal a couple CRT TVs (one with component video in), a Commodore
1541 monitor, and a IIgs RGB monitor.  Oh, and some green-screens.

And of course, I don't spend too much time on this (well, I think it's not
too much time :) ).

-- 
--  Jerry