Re: //e, //c, //gs Questions

[supertimer@aol.com (Supertimer)]

CUTjefbla@bconnex.net (Jeff Blakeney) wrote:

>supertimer@aol.com (Supertimer) wrote:
>
>>"Tru-color mode is similar, but each pixel can be
>>any of 16.7M (million) colors" (the paragraphs
>>before it detail the three color modes of the Second
>>Sight card, indexed, hi-color, and tru-color in this
>>paragraph).
>>
>>Checking with my calculator, 16.7M is 2 to the 24th
>>power or 24-bit color!
>
>Nope, Mitch is right on this one.  The Second Sight can only do 24 bit
>colour in 640x480 mode if the card has 1 MB of RAM installed.  Here is
>a chart of the three main resolutions and the maximum colours allowed
>on a 1 MB SecondSight card:
>
>  Resolution   Max Colours   Bytes/Pixel   Proof
>  ----------   -----------   -----------   --------------------------
>    640x480     16,277,216        3        640*480*3  = 921,600 bytes
>    800x600         65,536        2        800*600*2  = 960,000 bytes
>   1024x768            256        1        1024*768*1 = 786,432 bytes
>
>A SecondSight card with only 512k installed can only be used in
>640x480 or 800x600 mode with a maximum of 256 colours in each mode.
>(307,200 bytes and 480,000 bytes used respectively)
>
>>Don't knock it if you have never used it.
>
>I don't have one and haven't tried it but I will knock it because it
>is impossible for a SecondSight card to display 24 bit colour in
>1024x768 mode.  :-)

You are right.  According to the manual, the Second Sight can
do 1024x768 in indexed mode (256 colours), 800x600 in hi-colour
(32768 colours), and 640x480 in true-colour (16.7 million colours).

I didn't mean to imply that the Second Sight can pull true-colour
at 1024x768, just that it is a 24-bit colour SVGA card that can do
a maximum resolution of 1024x768.