[Coco] MC6847 External Character ROM

[Nick Marentes]

On 20/01/2015 5:52 AM, John W. Linville wrote:
> You'll be limited to one of two 2-color options with these "graphics",
> of course.  It could still be interesting, but it looses some luster
> when you have to choose between light green & dark green or light
> orange and dark orange... ;-)
>
> John

That's for characters up to 128. Can the characters 128 to 255 (8 colors 
block graphics) also not be reprogrammed?

Even so, hires graphics, even only light and dark green, would make VDG 
text displays so much nicer... and it only eats 512 bytes!

Nick