[Coco] MC6847 External Character ROM

[Luis Antoniosi (CoCoDemus)]

I a nice improvement would be using SRAM and allowing the coco to change it
on the fly using some port. The SRAM would be dumped from ROM upon reset.

Just in case you end up without any other project ;)



Luis Felipe Antoniosi



On Fri, Jan 16, 2015 at 9:02 PM, Zippster <zippster278 at gmail.com> wrote:

> The earlier style (USA) CoCo2’s are socketed that I’ve seen.
> A lot of the later (Korean) ones would need a socket installed.
>
> - Ed
>
>
> > On Jan 16, 2015, at 7:49 PM, Allen Huffman <alsplace at pobox.com> wrote:
> >
> >> On Jan 16, 2015, at 7:42 PM, Zippster <zippster278 at gmail.com> wrote:
> >>
> >> I’ve got my External Character ROM prototype for the MC6847 working.
> >> There’s a few pics I put up here if anyone is interested in taking a
> look.
> >
> >
> > Wow. That takes me back. I need to crack open my CoCo 1 and see what
> model lowercase mod I had in it. It wasn’t the big brand — something
> cheaper… That’s really neat. I think my VDG was socketed on the CoCo 1.
> >
> > I assume later CoCo’s had it soldered to the motherboard? Soldering
> would be required to install?
> >
> > --
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> >
> >
> >
> >
> >
> >
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