Cheap RGB to Video converter for vintage computers

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By gdx

Enlighted (4721)

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18-06-2015, 10:41

I tried three different converters without success. Sad

By NYYRIKKI

Enlighted (5880)

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18-06-2015, 10:48

gdx wrote:

I tried three different converters without success. Sad

Yes, unfortunately my converter also goes haywire when I output 50/60Hz progressive picture instead of 25/30Hz interlaced picture. Sad This may not be perfect solution for everyone.

By Alexey

Guardian (3204)

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18-06-2015, 10:54

Thanks Nyyrikki, but the FPGA board alone costs over 100 euros + it will be at least 15 for the board advertised on the webpage. What I have in mind is a single board with Altera FPGA. That won't cost over 30-40 euros. But need to learn how this stuff works first.

By NYYRIKKI

Enlighted (5880)

NYYRIKKI's picture

18-06-2015, 10:58

@Alexey: Yes, I know, but I just thought that this project may have some parts (like the input buffer) that could be reused or at least looking them might give some ideas, if some sort of FPGA implementation is in your distant plans.

By Alexey

Guardian (3204)

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18-06-2015, 11:01

Thanks Timo, I will keep this project in mind when starting mine...

By tranx

Champion (344)

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23-06-2015, 16:48

What is the status of this? Is the board available and can we purchase it? Thanks

By Alexey

Guardian (3204)

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23-06-2015, 17:23

Yes, the board is available as DIY kit for 29 euros + shipment. Please send me an e-mail if you are interested. You can find my e-mail in my profile.

By tranx

Champion (344)

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23-06-2015, 23:02

Thansk Alexey, this looks very promising.

I just have a couple of questions before ordering:

- Is the image clearer than using one of those GBS / Jamma boards? or put it this way, what is the benefit of this board versus the GBS?
- Does DIY mean that I have to solder the electronics on the board ?

I think this will help other prospective buyers too

Thanks a lot!

By Alexey

Guardian (3204)

Alexey's picture

24-06-2015, 11:59

Well, this board is not something special, there are several similar projects. I created it because my Japanese MSX machines do not work properly with those Chinese-made RGB to VGA converters. Also they don't work properly even with an expensive scan doubler - the picture is too sharp. My board outputs a decent S-Video signal that I feed to my Dell monitor. The board also supports connecting computers with separate sync signals, not only with composite. So you can use it with other vintage computers if you want.

The DIY kit means that you have to solder yourself. It's the cheapest way to get such a converter.

By Alexey

Guardian (3204)

Alexey's picture

30-05-2016, 00:31

The project files for this board can be found in my Github repository:

https://github.com/Wierzbowsky/Zefisha

The project files for version 1.1 of the board are available upon request.

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