I have been seeing a heck of a lot of stuff on manipulating the VGA's
256 color palette in ways that are decent (ie. no flicker or snow).  Well, I
posted my routine to set the palette without flicker on alt.msdos.programmer a
few days ago, but these questions keep popping up.

        So, here's a unit I've been using that I wrote that does a bit of VGA
manipulation.  It will grab the palette, set the palette, write the palette to
a FractInt-style .MAP file, read back from a .MAP, and produce some basic color
fades (red, green, blue, grey).  Use it, love it, change it, whatever.  Just
don't claim it as your own because this is PD stuff...

        As far as doing a fade to black goes, it really doesn't matter what
color you fade to.  (Note that this is one procedure not in this unit.. haven't
gotten to that yet.)  Simply tell some procedure the destination RGB values
(for black that's 0,0,0) and the number of steps you want it to take (say, 30
changes between normal and faded palettes).  Then just figure the step interval
for each color in the palette and start doing some subtracting.  It shouldn't
do too hard, and if I get around to doing it I'll post that code too.  But for
now here's that unit.  (It's called SuperVGA because I'll add higher-res stuff
as I get to it.)

        Sorry it's not too well documented..  I just decided to release to all
the netters about two minutes ago. :)

--
Steve Madsen
Miami University  Oxford, OH
Internet: sjmadsen@miavx1.acs.muohio.edu