Question Alternative video output NUS-CPU-09

Discussion in 'Nintendo 64' started by aMammoth, Jul 31, 2017.

  1. aMammoth .

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    I am unable to find any detailed information on alternative contacts that out put video on my board revision.
    NUS-CPU-09
    2000 model

    I have found information explaining that the video and audio nus chips have been combined into one MAVNUS chip. But I can't seem to find any information on what pin does what.
    Anyone willing to share some knowledge? I would greatly appreciate it.
     
  2. Matthew Formally known as Chaos Staff Member . .

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  3. aMammoth .

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    Indeed I have and i am pretty sure that my board is different
     
  4. GingerOfOz no wario Staff Member . .

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    " If you do not have the same setup, follow the video pin from the back of the board with a multi meter to find which pin you can grab video from."
     
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  5. aMammoth .

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    So turn it to resistance and start poking around?
    And I was kinda wondering if anyone had already documented anything on it. If not I would be glad to do so
     
  6. Matthew Formally known as Chaos Staff Member . .

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    You could do resistance but it may be easier to switch it to 'continuity' and use that. It should beep when two places are connected electrically. Go to the video out pins (where the plug would be) and connect one to the V pin and hunt around to find another video out source
     
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  7. jefflongo Broke BitBuilt Staff Member . .

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    I don't know about the N64 but in general some things to note when tracing out a signal is that

    1) The trace might enter a via and appear on the other side of the board

    2) If the signal goes through a cap or resistor you won't have continuity but just use common sense to determine that the signal is in fact going through there
     
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  8. aMammoth .

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    so far i believe this is correct? could anyone verify this for me? Or would I want to connect it after the capacitors?
    [​IMG]
     
    Last edited: Aug 1, 2017
  9. Matthew Formally known as Chaos Staff Member . .

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    Personally I would connect it directly to the chip itself. You probably could get it after the capacitors but unless something is wonky with the picture you're getting then connecting to the chip itself is fine.
     
  10. ShockSlayer Ivan - the tyranny of evil men . .

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    @aMammoth
    Trust me, you want as many filtering components as possible. Like everything, they're there for a reason.

    Anyways, I'm guessing at any point you didn't actually try googling "MAV-NUS" because there's already like 20 pinouts of it out there.

    Here are all of the traces anyways, specifically on a REV 9 board:
    [​IMG]
    [​IMG]
    The second image is mirrored, but it should be clear enough for you to use regardless.

    From the looks of it, DA5/DA6 is where it's mixed with LUMA or something. If you grab from the top pin of C16 you'll probably be fine, if not, run that line through FIL11 and then connect that to GND through C13(basically recreating what's already on the board.)

    There's also RA1 on the bottom where video is pulled down, but that's not in the images, and if you trim that off you probably have other problems.
     
  11. aMammoth .

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    Thank you very much. And believe me I did Google it. But Google isn't a friend of the user any more and doesn't produce results like it use to.
     

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