[Coco] Artifacting (again)

[Mark McDougall]

On 2/09/2010 11:21 PM, Wesley Haynes wrote:

> Another possible discrepancy is that some coco2 SAM chips (mine included)
> produced somewhat different artifact colors. My orange / blue SCREEN 1,1
> mode always looked more pinkish red / greenish cyan if you know what I mean.
> That is, the red was a little brighter than pure red, and the green was
> bluer than pure green but much greener than true cyan (text mode CLS 6,
> e.g.).

I think you mean 6847, rather than SAM. The SAM doesn't affect the video 
output, just the video memory addressing.

The Coco 2 had the -T1 variant of the 6847, which (also) had a different 
character set, including lower-case characters.

Regards,

-- 
|              Mark McDougall                | "Electrical Engineers do it
|  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"