[Coco] [Color Computer] Coco3 256 color mode

[Joel Ewy]

On 06/05/2010 01:25 PM, carlos wrote:
> Has there been any recent work on understanding if the 256 color mode really exist. Any new information on the internal workings of the GIME chip?
>
> Carlos
>
>    

Last I heard there was some uncertainty about whether the mode actually 
made it into production GIME chips, and the way to activate the mode 
involves a peculiar twiddling of bits not likely for anyone to be able 
to discover, even if it does exist.

Meanwhile, some palettes have been developed that make it possible to 
show ~256 artifact colors on an NTSC monitor or TV at an effective 
resolution of 160x200.  I did a little slideshow to demonstrate the 
effect:  http://www.youtube.com/watch?v=hjcUdoW0rrg

In my opinion, the 256-color artifact mode is likely about as good as 
the "real" 256 color mode would have been (except that it doesn't work 
with RGB monitors).  What I would like to see is an 8-bit color mode in 
CoCo3FPGA that approximates the 256 artifact color display.  That way 
applications could fairly easily be written to support both.

JCE

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