[Coco] For those of you following the RGB2VGA FPGA

[Luis Antoniosi (CoCoDemus)]

I started to test with my MSX2+, is working but I'm getting RGB voltage
issues. Seems they are higher on this machine and I get full white only.

Luis Felipe Antoniosi



On Mon, Sep 29, 2014 at 4:03 AM, Nick Marentes <nickma2 at optusnet.com.au>
wrote:

> The quality of your card is very good. Very sharp and clean. It's
> obviously been tailored to suit the CoCo3 video.
>
> It's color spectrum is it's biggest problem.
>
> I think that for most OS-9 users though, it's ability to represent the 8
> digital colors very well will be enough. Just don't plan on running many of
> the games such as Koronis Rift, Thexder and the Sierra adventures...
> although the Sierra adventures are mainly 8 digital colors with 2 levels of
> brightness so they may be ok (EGA 16 colors).
>
> I have an Amiga and have a flicker fixer installed. I tried connecting an
> LCD monitor to it and although it works fine, the quality of upscaling from
> a non native resolution to the LCD panel resolution is downright ugly.
>
> In the end, I found a very cheap (free!) LG CRT 15" monitor with high
> quality built in stereo speakers and the image (and sound) quality is
> brilliant! The Amiga works best on VGA LCD if you have a proper video card
> that can deliver native LCD resolution.
>
> And likewise on the CoCo3, I'll stick to CRT here too. I have a Tandy CM-8
> (which is a pretty low grade RGB monitor) but connecting it to a Amiga 1084
> yields better results. I'm happy with my original CM-8 though.
>
> A CoCo 1/2 to VGA converter would be good. It only has the 8 colors so
> your VGA adapter would be good.
> I assume that a VGA adaptor for this will require tapping to the internals
> to derive the necessary luma and chroma signals.
>
> Nick
>
>
> On 29/09/2014 4:17 PM, Luis Antoniosi (CoCoDemus) wrote:
>
>> You can buy one for 80 dollars.
>>
>> But I'm not aiming any production batch or commercial product. What I
>> wanted to do is to master the technology and not be slave of any other
>> device. Also I want to make a VGA converter for the coco2.
>>
>> It will be hard to get the full coco3 color spectrum but I would be very
>> happy If I could remove most of the noise. What I know now from where is
>> it
>> coming.
>>
>>
>> Luis Felipe Antoniosi
>>
>>
>
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