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01 May 2019, 20:22
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#1 |
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Registered User
Join Date: Sep 2017
Location: IT
Posts: 176
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Ami*rgb2vga
Could be of any interest to someone, if I put this new little board of mine on my github site as Open Hardware ?
Schematics, board amnd gerbers free for everyone on my github. Hint: the pattern you see on the background of full-colorured sections of the image is the led-matrix of the lcd panel .... isn't it any bad ? Comments are welcome !    
Last edited by sampedenawa; 02 May 2019 at 17:33. |
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01 May 2019, 20:25
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#2 |
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Long time Amiga Owner
Join Date: Jun 2017
Location: Uxbridge Canada
Age: 56
Posts: 182
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Very Cool. Need more info!
RC |
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01 May 2019, 20:31
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#3 | |
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Registered User
Join Date: Sep 2017
Location: IT
Posts: 176
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Quote:
Oh, just a modern replacement for the original A4000 rgb2vga adapter, designed with an eye to correct timings.... Of course it works with any amiga (need a 15Khz capable vga-lcd monitor in order to display all AMiga res). The one in my picture is a 22 inch Dell, for example I am thinking to release all details on my github and spread the project as Open Hardware, provided there is enough interest. |
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02 May 2019, 01:53
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#4 |
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Registered User
Join Date: Nov 2014
Location: NSW/Australia
Posts: 462
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Nice - it's great you open source all you stuff
 As an alternative, I'd done one that uses solder cups DB23 connectors - just another clone of the commodore one: https://github.com/daleking/Amiga_to_VGA_Buffered |
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02 May 2019, 11:20
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#5 | |
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Registered User
Join Date: Sep 2017
Location: IT
Posts: 176
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Quote:
Yours is very nice as well How does the '08 performs in terms of picture clearness ? I found that on Dell panels, the cleanest solution is the '04 (two ports cascaded), but I think it heavily depends of sync, phase and sample logic of each different monitor. Any experience ? |
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02 May 2019, 13:59
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#6 |
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Registered User
Join Date: Nov 2014
Location: NSW/Australia
Posts: 462
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Using an NEC 1970nxp the image is good and clean for me (after fiddling with pixel clocks anyway).
I must admit I haven't tested many monitors / configs. I've seen cables made which allow to swap between inverted or double inverted sync which is a nice idea. My main motivation was to copy the design of the little silver commodore dongles because stripping vga cables and soldering them up to the cups was fiddly and annoying and meant butchering vga cables. The dongles also go for silly money on ebay :/ |
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