Hi Cristan,
I get a Newsletter from SerdaShop, I found this quite interesting, except for the device is converting CGA/EGA/Hercules or MDA videocard to a VGA monitor.
They also, say, that it: It is also compatible with Commodore C128 TTL RGB output.
So maybe it might work with the QL, but remember the QL display has a overscan, which produces a larger display than most RGB outputs.
I will have a look at this more, the people at SerdaShop, do response to questions, and the design, is based on:
https://sites.google.com/site/tandycoco ... ega-to-vga
RGB to VGA
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Re: RGB to VGA
That design seems to be pretty close to what Marcel does in QLVGA.
I would, however, assume that pixel clocks and counters (both horizontal and vertical) are different in the FPGA code, i.e. wouldn't work unmodified with the QL.
I would, however, assume that pixel clocks and counters (both horizontal and vertical) are different in the FPGA code, i.e. wouldn't work unmodified with the QL.
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Re: RGB to VGA
I remember coming across this a while ago. I contacted the creator but never heard back. It's RBG to Component so not quite as good as VGA.
http://www.jrok.com/hardware/RGB.html
http://www.jrok.com/hardware/RGB.html
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Re: RGB to VGA
From the technical data I don't think it will work well with a QL. The clocks don't fit. And the output is a weird format as well. And even if it worked it's more expensive than QL-VGA is going to be.
The problem with QL-VGA at the moment is that DHL lost my shipment of FPGs. They were shipped successfully from China to Germany and now they are lost and there's not much I can do about it. So I ordered a quick replacement for testing in Spain, which the seller answered a few days later that he cannot find the chip anymore and cancelled the sale. Then I ordered a few more in China, which a week after still haven't shipped out yet! Today I will probably buy another one for a horrendous price in the US. Talk about annyoing.
The problem with QL-VGA at the moment is that DHL lost my shipment of FPGs. They were shipped successfully from China to Germany and now they are lost and there's not much I can do about it. So I ordered a quick replacement for testing in Spain, which the seller answered a few days later that he cannot find the chip anymore and cancelled the sale. Then I ordered a few more in China, which a week after still haven't shipped out yet! Today I will probably buy another one for a horrendous price in the US. Talk about annyoing.
Re: RGB to VGA
Yes it's true. Anyway, also a 20 € Gonbes board can (almost decently) cope with QL overscan. But yes, you're right: this may cause issues.Derek_Stewart wrote:but remember the QL display has a overscan, which produces a larger display than most RGB outputs.