I compared the cable I ordered from 8-bit classics.com (din on one side and s-video, audio L/R and composite video on the other side) with one I made myself. As base for my own made cable I used the cable on the other picture with din on one side and on the other side 4 RCA plugs where each one is matching a pin of the din and all ground goes to the middle pin. The colors are as follows: black = audio, white = composite video, red = chroma and yellow = luma. Composite video has the same result with both cables but S-video act differently. First I have to say that my 800XL doesn't have a modifiaction on the monitor connection so the chroma connection should be missing. I made a short cable myself (the 3rd cable) I cut a s-video cable in 2 and connected 2 female RCA plugs to the 4 wires, one is for luma (black) and the other is for chroma (red). I attach this cable to the other cable so i have din to s-video now. Both cables measure the same but give a different picture compared to when i use the composite video plug. The cable from 8-bit classics gives a picture that is a bit sharper than composite video, seems to have all the colors but has vertical lines. The cable I made myself gives an incorrect picture. It has a bit of red/purple glow. On my cable i can disconnect one of the 2 signals. when i disconnect the luma signal I get nothing and when I disconnect chroma only I see no difference. in my oppinion this is logical because chroma is not connected inside my 800XL. Or is it that maybe my 800XL has the chroma pin present and are the vertical lines with the cable from 8-bit classics caused by interference? In that case I should get a better picture with a soldered cable. I said before that chroma alone doesn't work. Does that have to do with sync and does it never work by itselves?
I also put the chroma and luma RCA plugs of my cable in the composite video input. With chroma of course nothing happens. With the luma I get the same result that I get with the luma+chroma rca to s-video cable I made..
So what should be the difference in picture bewteen a din to s-video where the 800XL (or other computer) has chroma and luma present and one that has chroma missing? what kind of pictures should I get then? I was told a black & white picture? That is not what I get in al situations..
I also soldered a cable. I used the other halve of the S-video cable I cut in 2 and soldered a din plug on the other side. It makes no difference in picture with the other cable I made. So I'm wondering what happens with the cable from 8-Bit Classics. Why does that picture look different since it measures exactly the same?
Can someone explain the difference I get? Why does the cable from 8-bit classics gives a color picture on my unmodified ? 800XL? Like I said both cables measure exactly the same. I can show pictures of both results maybe...
I hope someone can clear this mystery for me!