[Coco] Multi-Processor 6809 Computer System

[James Jones]

Speaking of graphics coprocessors and memory footprints: the solution would
be to get the 6[38]09 out of the business of doing graphics at such a low
level. See http://en.wikipedia.org/wiki/ManaGeR, which discusses the MGR
graphics system. (If you had a, oh, gee, what was it called, the AT306, or
MM1/b? You'll recall that Carl Kreider had it going, and the Wikipedia page
refers to a fellow named Carsten Emde and  an article he wrote about MGR
and OS-9. The link is broken, darn it.)

I really hope that an insistence on total wart compatibility doesn't kill
off CoCo advances. Again. (Does anyone have a copy of Kevin Darling's
CompuSever post titled "You're Killing the CoCo!"? I managed to not save
one.)


On Wed, May 1, 2013 at 8:34 AM, Luis Antoniosi (CoCoDemus) <
retrocanada76 at gmail.com> wrote:

> the 6309 is more efficient when in native mode than 6809. Would be a good
> start doing a FPGA socketed chip that would be efficient as possible
> running on same 1.78 mhz  ? Just remove the 6809 and plug this one. This
> would boost a lot the speed without needing to mod the machine and make
> complicated overclocks.
>
> Not a computer engineer expert but IFAIK only scalar architectures can
> achieve 1 cycle per instruction by pre-fetching and pipelining instructions
> and predicting branches. But on a coco machine what would be smaller cycle
> count ? 4 cycles ?
>
>
>
> On Tue, Apr 30, 2013 at 8:09 PM, Retro Canada <retrocanada76 at gmail.com
> >wrote:
>
> > do you know where can i get one of these? i have a composite to vga but
> > i'm looking for a RF to vga.
> >
> > Sent from my iPhone
> >
> > On 2013-04-30, at 8:07 PM, "John W. Linville" <linville at tuxdriver.com>
> > wrote:
> >
> > > On Tue, Apr 30, 2013 at 04:44:20PM -0400, Louis Ciotti wrote:
> > >> Don't have a coco 3 so those RGB converters will not work.  Only other
> > >> option is getting the composite signal out of the coco1/2 then to a
> > >> converter.
> > >
> > > I have a number of boxes that are analog TV (NTSC/PAL/SECAM) receivers
> > > with VGA output.  They work great -- I carry one in my CoCo "exhibit"
> > > kit that I use for Fahrfall in particular.  Easier than making the
> > > modifications required to get composite video from a CoCo 1/2!
> > >
> > > John
> > > --
> > > John W. Linville        Someday the world will need a hero, and you
> > > linville at tuxdriver.com            might be all we have.  Be ready.
> > >
> > > --
> > > Coco mailing list
> > > Coco at maltedmedia.com
> > > http://five.pairlist.net/mailman/listinfo/coco
> >
>
>
>
> --
> Long live the CoCo
>
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>