RGB from SNES

Discussion in 'Other Consoles & Oldies' started by VashTS, Jul 6, 2014.

  1. VashTS
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    VashTS Beat it, son

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    I'm looking to do this but the info I found is unclear.

    Can I go from SNES to VGA and get better quality video?

    Or is SCART the only option?
     
  2. Foxi4

    Foxi4 On the hunt...

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    You can convert from RGB to something else, but you won't get any better quality video than pure RGB. Here's the pinout of the slot:

    [​IMG]

    Just ignore the SCART connector on the right and you have all the pins necessary to extract pure RGB signal, the rest is a matter of converting it to something that suits your needs.
    1. Red video
    2. Green video
    3. +12V DC
    4. Blue video
    5. Ground
    6. Ground
    7. Luminance (Luma)
    8. Chrominance (Chroma)
    9. Composite video
    10. +5V DC
    11. Audio left
    12. Audio right
    :arrow: Source

    The next best thing would be getting an S-Video cable, since that connector was actually used in North America - there are ready-made ones available online and support the SNES, N64 and Gamecube since the pinout hasn't changed over the years.

    [​IMG]

    :arrow: Example
     
  3. overdriver

    overdriver Advanced Member

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    yeah.. RGB(SCART) for minimal mod of cable.. or you can buy a premaid cable on ebay.
    or you can mod to get a *experimental* component output for probably same or slightly better screen quality depending on your display.
     
  4. Foxi4

    Foxi4 On the hunt...

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    Component output will require soldering directly to the video encoder, unless the OP has a steady hand and isn't afraid of putting some elbow grease into the project, buying a ready-made cable is probably a better option. Anywho, here are some instructions on the component how-to, along with links to the schematics:

    http://www.sega-16.com/forum/showthread.php?20732-Easy-SNES-SFC-YUV-component-video

    The results will probably be close to ideal since you're snatching the signal directly from the video encoder, but it takes some extra effort and modding. I'd personally go for RGB - it's available right on the plug and perfectly fine quality-wise - you just can't mess it up.
     
  5. migles

    migles Mei the sexiest bae

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    but foxi, can't you just get a scart cable cut it in the middle, and use tape with the rgb plugs?
     
  6. overdriver

    overdriver Advanced Member

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    yeah I think RGB is safe choice but for my case that I usually connect SNES to RGB monitor - RGB connection does not give me any option to adjust contrast or color, etc. so I prefer S-Video over RGB only for my RGB monitor(Sony).
    so, I am more interested in component mod - but, I figure out that no one has finalized any of these circuit yet. Some reports reliability issue(burn up) over time. I am not so sure what to follow now for best quality video for my situation. :)
     
  7. Foxi4

    Foxi4 On the hunt...

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    If you fancy shitty signal, sure. Why go through the trouble of ordering an RGB cable just to slash it in the middle and allow all the possible electronic noise to distort the signal because you felt like using some tape instead of proper soldering and insulation? :P If you do something, do it right. ;)
    RGB will give you slightly better signal than S-Video due to separated colour channels, but S-Video is pretty high-quality as well and I'm sure you won't complain - both are definitely tons better than composite. The latter is definitely the easiest solution for you as all it takes is buying a ready-made cable or modifying your existing one (with the right tools! :P).
     
  8. migles

    migles Mei the sexiest bae

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    i asked to learn. i mean, i was not sure if it required something besides putting the wires in the right place..
     
  9. Foxi4

    Foxi4 On the hunt...

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    Oh, I wasn't being mean, sarcasm is my second nature. :P It's generally a good rule of thumb to consider all solutions made with sticks, clay, spit as temporary ones and not the go-to ones. If you want the cleanest signal possible, you kinda want the cable to be right. Any loose connection can cause on-screen oddities and any electronic noise can distort the signal, so you want the cables well-connected and insulated. Here I look at my own setup and hastily connected cables, mumble something along the lines of "practice what you preach" and hide in the shadows to contemplate my own laziness. :P
     
  10. migles

    migles Mei the sexiest bae

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    i know you were not being mean, i said that in case you wanted to ad something for my knowledge or correct me

    for translate from rgb to composite there is a need of a logic circuit, right? (i know there is composite out on the snes but i am asking to knowledge..)
     
  11. Foxi4

    Foxi4 On the hunt...

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    Yes, compositing all the relevant video signals into one requires some logic. The raw R, G, B, Chroma and Luma are practically taken directly from the encoder chip. You can find more about composite video here.
     
  12. VashTS
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    VashTS Beat it, son

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    thanks all! im not afraid to solder, im probably a 7.5/10 on that.

    the problem is the SCART, I guess I would have to convert that to something else and thats what I want to avoid. like going straight from the SNES to VGA and it being a higher quality, or even component.

    i guess I dont have the option, it has to go to SCART?

    edit: i think i didnt read Foxi's first post right, but now i think i get it...so if i follow that pin out and match it up to VGA, it should work?

    double edit: i dont think VGA has the matching signals, I'd probably need something in between. Dang.
     
  13. Cortador

    Cortador GBAtemp Fan

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    Personally i went the Scart to Hdmi route.