[Coco] Modern monitors that work on CoCo 3 and MM/1

[Robert Emery]

Yes, there have been VGA multisync monitors since the early 90s that would
work. They've just always been pricey and nowadays are getting quite rare.

It seems like the retro-gaming community has had it's collective voice
heard.

Bob


On Thu, Mar 6, 2025, 8:48 PM Christopher R. Hawks via Coco <
coco at maltedmedia.com> wrote:

> On Thu, 06 Mar 2025 07:42:58 -0700
> Frank Swygert via Coco <coco at maltedmedia.com> wrote:
>
> > Allen Huffman wrote:
> >
> > With the recent ?discovery? that some ?FreeSync? monitors will work
> > with a CoCo 3 with just a cable, David Ladd did a test to see if the
> > FreeSync monitor he already had would work with the MM/1 ? and it
> > does. How long has this been a thing? Why are we inventing adapters
> > and FPGAs and PI based converters if monitors exist? :)
> >
> > I have a cable on the way, and will be taking a CoCo 3 down to Best
> > Buy to go through their FreeSync monitors (if they allow) to see
> > which ones work. I?ll try to create a document or web page with this
> > information (maybe CoCopedia.com <http://cocopedia.com/> is a good
> > spot).
> >
> > We assume if it works on the CC3, it will work on the MM/1. I?ll find
> > that out at some point when I dig mine out of storage.
> >
> > More on this shortly...
> >
> > =================================
> >
> > I tried looking up FreeSync specs and didn't find much. It's an AMD
> > technology designed to work with newer Nvidia chip graphics cards.
> > AMD doesn't require a license, so it's getting popular. The monitor
> > electronics "talks" to the graphics card and syncs the best refresh
> > rate. Apparently the monitor side will detect the sync type and rate
> > of the graphics input even if the graphics card does not have the
> > nvidia chip set. That only makes sense, otherwise the monitor would
> > REQUIRE an nvidia graphics card and the monitor maker would be less
> > inclined to use it in their monitors. I was looking to see what the
> > minimum refresh rate was but couldn't find it. Obviously low enough
> > for the CoCo and Amiga. Not all monitors may sync that low though.
> >
>
>     AND freesync ONLY works with HDMI and Display Ports! So the
> 'freesync' part is moot for the CoCo RGB. G-Sync is only on Display
> Ports (v1.2a).
>
>     What matters is if the VGA port will take a 15KHz signal. I have a
> couple that do and one on the way that will. None of them are freesync
> or G-Sync. Most of the previous monitors only sync down to 30 KHz.
>
>     Hopefully, the 'sync's will guarantee that ALL inputs can sync to
> 15 KHz...
>
>
> Christopher R. Hawks
> HAWKSoft
> --
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