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Post by xahmol on Apr 6, 2023 4:08:49 GMT
By the way: advantage of having separate solutions for RGBI 80 column and the 40 column signal is that you are able to output both at once. So that I could capture this kind of videos: youtu.be/hh7a3T1GvT4(and of course my posts were in no way intended to slight your efforts)
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Post by yovish on Apr 9, 2023 23:29:33 GMT
RGBtoHDMI is an interesting project and I drew attention to it some time ago, but it does not fulfil my expectations. 1. This adapter does not have a brown colour correction: drive.google.com/file/d/1KGNbxCchcJTIjQPqnGPUPCsTPp8Y6xyr/view?usp=sharing2. It does not support 40-column and 80-column alternating modes, only 80-column. 3. I am very interested in EURO/SCART, as are many others in this part of europe. 4. The project is starting to get too expensive. 5. The CPLD works fast, but there may be some latency in the HDMI signal sent by the RPi Zero. Nevertheless, the idea itself is interesting and I have started to take a better look at it. Maybe I can get the CPLD configuration changed to at least accommodate BrownFix and other ideas.
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Post by xahmol on Apr 10, 2023 6:38:33 GMT
yovish : you can very easy create your own palettes on the RGBTOHDMI. You can assign and RGB value you want to dark yellow / orange or any other color. So your first statement is not correct. I just happen to us3 the palette made by (one of the) creators of both the Risen from Oblivion and Colour Spectrum, as according to him it is the only right way to watch those demos 😉 anyway: free to build your own adapter of course. Just very sceptic anything over SCART can ever approach this one on quality of picture.
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Post by yovish on Apr 10, 2023 12:14:57 GMT
xahmol: Indeed the quality of the RGBtoHDMI images is amazing. Probably sooner or later I might be able to build this adapter for myself. I have ordered a prototype board with a CPLD XC9572XL chip and a USB Blaster programmer to learn other solutions. I'm already thinking about ordering the RGBtoHDMI boards in the 6bit V4 version from jlcpcb. Only I don't have an RPi Zero, and they are getting more and more expensive.... :-( I know that EURO/SCART doesn't give a perfect picture as with HDMI, but we here use minitors and TVs with this connector, to connect various other retro computers and consoles as well. Besides, you probably won't believe it, still some of us like to work with monochrome monitors (mine is a Neptun 156 with a green screen) - after all, it's called NOSTALGIA! ;-) drive.google.com/drive/folders/1peIx8DlWMZgoZwxXUxApCOtVL4xXuZXc?usp=sharingI even have a special solution worked out to display the monochrome image in 16 shades in 80-column mode for the C128, not just in 3 shades like the image via pin 7 from the RGBI connector. drive.google.com/file/d/1Fp_OcSGEEGaso0HOtS8J5en-YRfdIz-o/view?usp=share_linkAs for the choice of dark yellow or brown, I know there are people who like one or the other. That is why I decided to make such an adapter so that at one moment you can decide which palette you want to display, just switch without switching off the game or program and also the C128 itself.
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Post by xahmol on Apr 10, 2023 18:00:10 GMT
yovish : understand, I still love to use CRTs as well. But have original Commodore monitors for that, a 1084S-D1 and a 1901. So no need for any converter there. Have a Sony Trinitron TV as well., that is where I sometimes use the Sven Pook adapter for. Mostly use that for quickly connect a C128 not permanently connected. By the way: think that also palette on the RGBTOHDMI can be changed without switching off the game. You can select palette from its user interface menu. Only creating the palettes needs to be done on the SD card itself, but if you created the palettes you can switch between them from the menu I think. Never tried that though. But did try other settings where that is the way how it works.
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Post by yovish on Apr 23, 2023 11:11:43 GMT
Once again, I analyzed the costs associated with equipping my C128 with RGBtoHDMI. I must mention that this is about prices and access in Poland, which sometimes can also involve additional shipping costs.
The RGBtoHDMI device itself, is the purchase of an RPi Zero ($45) and an RGBtoHDMI adapter ($20-$55). This is only for 80-columns.
To support 40-columns, you need to buy a replacement for the C128 modulator, something similar to the C64-Video-Enhancement, which gives Component Video output, i.e. Y+Pr+Pb ($75), but so far I have not seen such a solution, and that for the C64, does not fit the C128 unfortunately.
One would still have to think about the cost of making the appropriate add-ons like wiring and enclosures, which clearly discourages me from this solution.
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Post by xahmol on Apr 30, 2023 10:48:58 GMT
Why do you need a replacement for the modulator? Just use one of the S-Video to HDMI options. That is what I do at least. The only reason you would need a c0pperdragon is if you want to use the RGBtoHDMI for both 40 and 80 column with a add on analogue board on the RGBTOHDMI. And afaik the c0pperdragon does fit the C128, but did not try myself. See youtu.be/mvTGewKlmK4
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