[Coco] Video band width and accessing video memory

[Dave Philipsen]

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

> On Jun 3, 2019, at 10:08 AM, L. Curtis Boyle <curtisboyle at sasktel.net> wrote:
> 
> Yes, and that supposedly is the “hidden mode” that Mark Siegal, and some original proposed spec sheets from Tandy and Microware, mention. It fits the current bandwidth limitations of the GIME. Both 128x192/200/225 and 160x192/200/225 with 256 colors should be feasible. Dave - are any of those modes supported on the CocoFPGA? If so, I am hoping that Gary and Ed also add those to the GIME-X.
> 
> L. Curtis Boyle
> curtisboyle at sasktel.net
> 
> 
> 
>> On Jun 3, 2019, at 8:35 AM, Dave Philipsen <dave at davebiz.com> wrote:
>> 
>> But it *is* feasible to do a 160x200 mode in 256 colors. 
>> 
>> Dave
>> 
> 
> 
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