[Coco] Coco 3 Missing Mystery Color Mode

[Steve Ostrom]

This may seem like a very foolish question to those of you on the list who 
are Coco hardware experts, but I had to ask.

I was reading a 1989 Coco-Link magazine from Australia this weekend and came 
across this bit of information I had never heard of before.  They stated 
that the PIA outputs, which control the display modes of the video display 
chip (6847) on the Coco2, are not connected to anything on the Coco3.  They 
went on to show a hardware project that could use these unused PIA outputs.

I'm not sure that the above information is even true, but if true, could our 
missing high color video mode be a result of this "non-connection"?  (OK, go 
tell me to crawl back in my hole.)

-- Steve --