[Coco] MC6847 External Character ROM

[Ronivon Costa]

If it was possible to burn a eprom and use as charrom, that would be
easy... or use a flash, so it could be redefined.
In a project I did, the default charrom is in rom, but copied to ram during
boot, and after that we can redefine it as wished.
I used linux font "lat9-08.txt" as default, but could be anything 8x8, 7x8,
etc as charset , and created a small shell script to convert pdf format to
ROM format.
Not for  a Coco, but the principle would be valid. :)

On 19 January 2015 at 20:12, Juan Castro <jccyc1965 at gmail.com> wrote:

> Another silly question: is there any CoCo emulator that supports an
> external char ROM?
>
>
> Juan Castro
> Enviado do meu Olivetti Programma 101
>
> On Mon, Jan 19, 2015 at 6:06 PM, Nick Marentes <nickma2 at optusnet.com.au>
> wrote:
>
> > 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
> >
> >
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> >
>
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