[Coco] again: CoCo RGB to VGA conversion

[jdaggett at gate.net]

Mark

I am a Design Engineer. I  have designed and built many test 
boards used to develop software and hardware for portable wireless 
data products. 

First step is to crawl. Most of the open cores are very adaptible. 
Initial test will be done either with a coco3 or a breadboard built 
around 6809/6309 processor to be as close to the Coco 3 as 
posible. I do  have some spare ICs and used Coco3 are available 
from time to time on Ebay for a decent price.

james


On 19 Aug 2004 at 21:31, Mark Marlette wrote:

Date sent:      	Thu, 19 Aug 2004 21:31:55 -0500
To:             	CoCoList for Color Computer Enthusiasts 
<coco at maltedmedia.com>
From:           	Mark Marlette <mmarlett at isd.net>
Subject:        	Re: [Coco] again: CoCo RGB to VGA 
conversion 
Send reply to:  	CoCoList for Color Computer Enthusiasts 
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> At 8/19/2004 08:06 PM -0400, you wrote:
> 
> james,
> 
> The VGA/SVGA will probably fairly easy with the cores that are out
> there. How do you plan to  enable all of the non standard VGA modes of
> the CoCo? GIME registers to actual functions? Test plan to make sure
> everything works? I'm a Test Engineer.....Sorry.... :)
> 
> Mark
> 
> 
> >Mark
> >
> >Add full VGA support and maybe even SVGA with at least 256
> >color. If possible also digital drive to a LCD panel.
> >
> >james
> >
> >
> >
> >
> >On 19 Aug 2004 at 18:43, mmarlett at isd.net wrote:
> >
> >From:                   mmarlett at isd.net
> >To:                     coco at maltedmedia.com
> >Date sent:              Thu, 19 Aug 2004 18:43:23 -0500
> >Subject:                Re: [Coco] again: CoCo RGB to VGA
> >conversion
> >Send reply to:          mmarlett at isd.net,
> >         CoCoList for Color Computer Enthusiasts
> ><coco at maltedmedia.com>
> >         <mailto:coco-
> >request at maltedmedia.com?subject=unsubscribe>
> >         <mailto:coco-
> >request at maltedmedia.com?subject=subscribe>
> >
> > > james,
> > >
> > > Could you please expand on the major enhancements to the video
> > > section?
> > >
> > > At a minimum I hope that it will be 100% backwards compatible,
> > > plus all the new stuff you add. ????
> > >
> > > Mark
> > >
> > >
> > >  >Al
> > > >
> > > >I am currently looking at doin gthe GIME in an FPGA and doing
> > > >some major enhancements to the video section. So far very
> > > >promising. Then you can dump a 6809 CPU into another FPGA and
> > > >basically there it is a coco on two chips and I/O 3.3 volt
> > > >tolerant and the core runs at 1.8 VDC. Nice operation for a
> > > >laptop type scenario.
> > > >
> > > >james
> > > >
> > > >
> > > >On 19 Aug 2004 at 15:13, alsplace at pobox.com wrote:
> > > >
> > > >Date sent:           Thu, 19 Aug 2004 15:13:38 -0700
> > > >From:                <alsplace at pobox.com>
> > > >Subject:             Re: [Coco] again: CoCo RGB to VGA
> > > >conversion
> > > >To:                  coco at maltedmedia.com
> > > >Send reply to:       CoCoList for Color Computer Enthusiasts
> > > ><coco at maltedmedia.com>
> > > >     <mailto:coco-> >request at maltedmedia.com?subject=unsubscribe>
> > > >     <mailto:coco-> >request at maltedmedia.com?subject=subscribe>
> > > >
> > > >> Space is a big issue.  The emulator should be the natural
> > > >> solution, but JeffV's never worked fast enough for me to use,
> > > >> and now I'm on a Mac and can't figure out how to get MESS
> > > >> running well enough to use. A real CoCo would be ideal.  But I
> > > >> haven't had a CRT computer since my 1999 iMac DV (which was
> > > >> still tiny -- all in one, "monitor" with a keyboard and mouse
> > > >> and that was it).  My iMac from 2001 is flat panel and now I'm
> > > >> hooked on that idea.
> > > >>
> > > >> So, really, I'm hoping we can figure something out -- this
> > > >> might be a great opportunity for another CoCo HW team to do
> > > >> something, so Could-9 isn't the only game in town (else Mark
> > > >> will be backlogged with projects for years!).
> > > >>
> > > >> Hmmm.  Glenside project, maybe? :)
> > > >>
> > > >>      -- A
> > > >>
> > > >>
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> > > >
> > > >
> > > >
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> 
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