Divarin
Veteran Member
Hi all I have an Amiga 500 and I'm trying to build a video cable to get it going on a VGA monitor that does support the 15khz signal.
First off I know that you can buy these but with my setup, to try to save space and not have too many cables, switch boxes, etc... lying around, I am trying to do basically the same thing I did with this spectrum where I built a cable to go out of the spectrum and into the custom Atari ST to vga cable I had previously built.
So I sourced another 13 pin din extension cable and a 23 pin d-sub connector and set out to build this cable. The issue I have is that the signal seems to lack any blue, it's very yellow indicating that only the red and green are coming over.
I know you're not supposed to combine the grounds but in my case I really do only have one ground to map to so on my first attempt I combined all of the grounds, (amiga pins 16-20, going off this pinout) That's when I saw the yellow video. It's stable and the sync is good but yellow.
So then I thought maybe I'll just connect my one and only ground to pin 20 (Video ground) but it's still yellow.
I did double check that the pin mapping is accurate so I'm assuming either there's an issue with the video port on the computer itself or how I'm connecting the ground(s).
First off I know that you can buy these but with my setup, to try to save space and not have too many cables, switch boxes, etc... lying around, I am trying to do basically the same thing I did with this spectrum where I built a cable to go out of the spectrum and into the custom Atari ST to vga cable I had previously built.
So I sourced another 13 pin din extension cable and a 23 pin d-sub connector and set out to build this cable. The issue I have is that the signal seems to lack any blue, it's very yellow indicating that only the red and green are coming over.
I know you're not supposed to combine the grounds but in my case I really do only have one ground to map to so on my first attempt I combined all of the grounds, (amiga pins 16-20, going off this pinout) That's when I saw the yellow video. It's stable and the sync is good but yellow.
So then I thought maybe I'll just connect my one and only ground to pin 20 (Video ground) but it's still yellow.
I did double check that the pin mapping is accurate so I'm assuming either there's an issue with the video port on the computer itself or how I'm connecting the ground(s).