[Coco] Video band width and accessing video memory

[Dave Philipsen]

The CoCo3FPGA definitely has a way to select palettes from more than 256 colors, actually 4096. There’s a trick Gary used to map it in. I’d have to look it up again because I remember writing a demo for him to test that function. I would assume he’s doing the same thing on GIME X but I’ll ask him next time I talk with him.

Dave

> On Jun 3, 2019, at 4:46 PM, L. Curtis Boyle <curtisboyle at sasktel.net> wrote:
> 
> Is that using the “standard” fixed 256 color palette, or with a way to select from a >256 colors? If the latter, how is that mapped into the Coco palette register space?
> 
> L. Curtis Boyle
> curtisboyle at sasktel.net
> 
> 
> 
>> On Jun 3, 2019, at 3:40 PM, Dave Philipsen <dave at davebiz.com> wrote:
>> 
>> Yep, in theory they are supported on the CoCo3FPGA. The only 256-color mode I’ve use on it is the 640x450. And I believe Gary has already implemented the 256-color 160x192/200/225 mode and, I assume, the 128x192/200/225 mode on GIME X.
>> 
>> Dave
>> 
> 
> 
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