Re: Deep Thoughts => More than 3200 or More than 16 grays

[neville@fawlty.towers.oz.au (Neville Smith)]

In article <1993May11.222300.28453@fawlty.towers.oz.au> johnmac@fawlty.towers.oz.au (John MacLean) writes:
>>This way we'd get 8192 possible colours.
>>
>A) The pixel values constant, but the palettes flipping, in which case you
>only get 16 colors per scanline, or 3200 colours (even if each colour is
>1/2 way in between the colors in each of the flipped palettes).
>You may well get a choice of more effective colors, but this would not help
>you very much as the number of effective colours on the screen at any one
>time would not increase.

Hadn't thought of that, but at least you'd have a larger pallette from
which to select!

>>I think the FTA(ACS) did this on their Animaga disk.
>>They had a screen showing 32 shades of gray.
>
>You can't have 32 pure shades of gray (ie: Red=Blue=Green) even in 3200
>mode because there are only 16 shades of red/blue/green.
>You can get more by adding bluey-grays, greeny-grays, and redy-grays
>(for want of better terms).

I think you misunderstand. There weren't 32 shades of gray on the same line.
There were 32 shades of gray over 32 lines.
This is easily possible using the technique I explained
because you get those half colours.

Neville Smith.
-- 
neville@fawlty.towers.oz.au	BH +61 2 427 2999	Have a nice compile.