[Coco] Multi-Processor 6809 Computer System

[Bill Gunshannon]

> 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.

That is exactly what I was suggesting but I guess not clear enough
for people to grasp it.

>         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

AT&T UnixPC or 3B1 with a mod to the graphics.

bill

> 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
>>
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> http://five.pairlist.net/mailman/listinfo/coco
>>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>


-- 
Bill Gunshannon          |  de-moc-ra-cy (di mok' ra see) n.  Three wolves
billg999 at cs.scranton.edu |  and a sheep voting on what's for dinner.
University of Scranton   |
Scranton, Pennsylvania   |         #include <std.disclaimer.h>