[Coco] MC6847 VGA (FPGA) Project underway...
brendan at polylith.com
Wed May 25 23:11:52 EDT 2016
I just got PMODEs 0 and 2 working last weekend. (That's RG2 and RG3 for
the "purists" that follow the 6847 spec.) All of the modes blessed by
BASIC are working now.
I'm working on the modes that are not directly supported by BASIC, such as
SG6, CG1, CG2, and RG1. Thankfully, as of last weekend, I have a test
framework and a small test suite from Steve Spiller, who also reminded me
of William Barden's Color Computer Graphics book. Together, these have
made it simpler for me to enable some of the graphics modes to try them out
and discover what is still broken in the FPGA design. There are also still
some other small issues that Simon Jonassen has helped me identify through
his demos, but all-in-all, the project is coming along.
I have also gotten Ed a new FPGA image that should, in theory, be suitable
for trying out the production boards - but I think you're right, Ed has a
ton of hardware projects on his plate, so we will need to be patient. ;)
Thanks for asking!
On Wed, May 25, 2016 at 9:37 PM, Ron Klein <ron at kdomain.org> wrote:
> Hi Ed / Brendan,
> Any updates on this? It was impressive as heck to see at CoCoFEST!
> ... it's not as if Ed doesn't already have too many things going on ...
> On Tue, Oct 13, 2015 at 1:30 PM, Brendan Donahe <brendan at polylith.com>
> > *drool* Thanks, Ed!
> > On Tue, Oct 13, 2015 at 1:18 PM, Zippster <zippster278 at gmail.com> wrote:
> > > I just got Brendan’s prototype board into the mail so he can further
> > > develop
> > > the code for the FPGA.
> > >
> > > Isn’t she pretty after her bath…. :)
> > >
> > > <https://drive.google.com/open?id=0B1sgl615FlGnOHlDQ1ZOMHU3RGs <
> > > https://drive.google.com/open?id=0B1sgl615FlGnOHlDQ1ZOMHU3RGs>>
> > >
> > > - Ed
> > >
> > > --
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> > > Coco at maltedmedia.com
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> > >
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