14 December 2017, 21:14 | #1 |
Bane of Magic
Join Date: Nov 2005
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Amiga passive DB23>VGA (15khz modes)
I can VERY HAPPILY confirm that it works on the Acer K242HYL.
This is a standard 15khz "PAL" mode. The image quality is crap because I lack good soldering skills and the connections are going to be complete arse, but I can at least confirm that there's a modern(still sold today) display that can handle the Amiga's resolutions. I used the information from this image to make my cable <image deleted to avoid breaking amigas> Last edited by Devlin; 18 December 2017 at 23:48. |
14 December 2017, 22:20 | #2 |
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It might be the lack of screening and the questionable ground connections in that diagram rather than your soldering skills that cause that sort of image problems, but good to know another model that works!
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14 December 2017, 22:30 | #3 | |
Bane of Magic
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Quote:
I spent a lot of time looking for the datasheet for this display and it didn't say anywhere that it supported these modes so I figured I was pissing in the wind(figuratively) but I was especially surprised my DELL display (just out of shot) spat an out-of-range error because I thought it was the more compatible display. The K242HYL is a really nice monitor (hence it being my primary PC display) and goes for about £120 on amazon. |
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14 December 2017, 23:02 | #4 |
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Be careful with the diagram. Pin 22 on Amiga is actualy +12V, so you risk damaging your equipment. For ground pins on Amiga side use 16-19.
Anyway happy to see another monitor compatible I will include it in my list Can you check whether it can change aspect from 16:9 to 4:3? |
14 December 2017, 23:50 | #5 | |
Bane of Magic
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Quote:
Is there a better schematic for this kind of cable? It'd be trivial for me to de-solder my hack job and redo it with better cables. |
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14 December 2017, 23:57 | #6 |
Bit Copying Bard
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18 December 2017, 17:59 | #7 |
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Amiga video connector pins 11 and 12 are hsync and vsync, but those lines are unbuffered, leading more-or-less directly to the Agnus chip. If connecting to those you should really buffer the signals.
A better option would be to use Amiga pin 10 which is csync (composite sync) instead. That line is buffered already, and your monitor will probably work if you just connect it to the monitor's hsync pin (pin 13 of the VGA connector). Leave the monitor vsync pin (pin 14) unconnected. |
18 December 2017, 18:46 | #8 |
Bane of Magic
Join Date: Nov 2005
Location: Bradford, UK
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I'm not using the cable now on account Bad Things have happened to my amiga because of it.
Gonna just buy an adapter in the future for the 1200 - repairing the RGB/SCART connection is my priority right now. |
18 December 2017, 22:00 | #9 |
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If you can, please remove the first post schematic, to ensure other users do not make the same mistake.
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18 December 2017, 23:48 | #10 |
Bane of Magic
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19 December 2017, 00:43 | #11 | ||
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Quote:
Quote:
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