[Coco] RGB2VGA on Amiga W.I.P.

David Ladd davidwladd at gmail.com
Thu Dec 3 13:16:54 EST 2015


On Thu, Dec 3, 2015 at 10:42 AM, Zippster <zippster278 at gmail.com> wrote:

> Dave,
>
> I recently acquired an MM/1, and I was able to get a pretty decent picture
> right
> off the bat.  With a little tweaking it should work pretty well.
>
> This pic is with 82Ω resistors in series between the MM/1 and RGB2VGA board
> on the RGB channels, and the syncs relying on the on-board resistors
> (connected
> directly to the CoCo3 port).
>

​So I should be able to use a DB-9 and put those (3) 82 ohm resisters​ in
side it and run a cable to a 10PIN header.  Does that sound like a workable
idea?



>
> <https://drive.google.com/open?id=0B1sgl615FlGncTdsR3pDekJ6QkE <
> https://drive.google.com/open?id=0B1sgl615FlGncTdsR3pDekJ6QkE>>
>
> Typically bad cell phone pic, but seems pretty close to what I can make
> out here…
>
> <https://drive.google.com/open?id=0B1sgl615FlGndU10TDF4OWlxN3M <
> https://drive.google.com/open?id=0B1sgl615FlGndU10TDF4OWlxN3M>>
>
> - Ed
>
>
> > On Dec 2, 2015, at 10:11 PM, David Ladd <davidwladd at gmail.com> wrote:
> >
> > I wonder if that might be one of the reasons the RGB2VGA isn't working
> as I
> > had expected on the MM/1?
> >
> > +----------+
> > |David Ladd|
> > +----------+
> >
> >
> >
> >
> > On Wed, Dec 2, 2015 at 4:20 PM, CoCo Demus <retrocanada76 at gmail.com>
> wrote:
> >
> >> It does work, the color resolution is the problem.
> >>
> >> I will need 1% resistors on it....
> >>
> >> But the final amiga board is different, I need more pins for more
> >> colours...
> >>
> >>
> >> On Wed, Dec 2, 2015 at 12:20 PM, Richard E. Crislip <
> rcrislip at neo.rr.com>
> >> wrote:
> >>
> >>> On Wed, 2 Dec 2015 11:04:39 -0500
> >>> Rich Carreiro <rlcarr at gmail.com> wrote:
> >>>
> >>>> I'll be in for one of those when it's complete!  I've been dying
> >>>> for something like this to be able to connect my Amigas to
> >>>> modern monitors.
> >>>>
> >>>> On Mon, Nov 30, 2015 at 3:17 AM, CoCo Demus <retrocanada76 at gmail.com>
> >>>> wrote:
> >>>>> I'm changing the rgb2vga to support Amigas :)
> >>>>>
> >>>>>
> >>>>> https://www.youtube.com/watch?v=PGC9veEThMQ
> >>>>> https://www.youtube.com/watch?v=XJ9wT8-_fNg
> >>>>>
> >>>>> --
> >>>>> Coco mailing list
> >>>>> Coco at maltedmedia.com
> >>>>> https://pairlist5.pair.net/mailman/listinfo/coco
> >>>>
> >>>>
> >>>>
> >>>
> >>> AT one time there was a Flicker Fixer/Scan Doubler available. I have
> >>> one for my A2000s. It works great with my HP1706 plasma monitors. It's
> >>> too bad the RGB2VGA adapters developed for the CoCo do not work with
> >>> the Ami.
> >>>
>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>


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