GBS-8220 RGB TO VGA Converter

[vanpeebles]

Just a quick report as I'm hoping to make this an article for Quanta. After reading some comments in the Oct/Nov 2010 Quanta magazine about QL's and modern monitors, plus seeing a review on a Spanish retro site: http://www.zonadepruebas.com/modules/sm ... temid=1225

I ordered one of these boards from www.jammaboards.com:

http://www.jammaboards.com/store/cga/eg ... d_291.html

The results can be seen here:






For some reason the pinout in the QL manual seems flipped or I might have read it wrong, I got the colours and the sync the wrong way. Sync is corrected but need to swop the colours for the final soldering.

[vanpeebles]

Two screenshots to compare the Cub monitor versus the RGB board.

CUB


RGB

[RWAP]

That is looking good actually - although I wonder why no-one has ever tried the simple composite video mod on the QL?

[vanpeebles]

I've not heard of it, would that mod support monitor mode on a normal tv or monitor?

[RWAP]

See http://womblesretrorepairshack.blogspot ... o-mod.html

I don't see why this won't work on a QL, although you will still not get 521x256 pixels on a TV so far as I can see - it is just an alternative if you have a poor display output on the TV set.

[vanpeebles]

Ah that RGB board supports monitor mode on a VGA monitor or tv with a VGA socket.

[robheaton]

My RGB to VGA board just arrived!
Time to set to work....

[robheaton]

Finally got my RGB to VGA Converter hooked up, the RGB cable I used had no V. Sync wire at the QL end.

Not a problem though, and the picture is great!

Nice find vanpeebles!

[Peter]

With my German QL, the picture jumps in vertical direction at unpredictable times. Characters are hardly legible in 512x256, and the single pixels at the border can not be distinguished. Did you have the same results? I used the digital R,G,B,CSYNC inputs (called CGA/EGA).

[vanpeebles]

Are you using the pole terminals or connected via the cable that came with it? I've had no problems with mine.