Worklog PPR

Discussion in 'Nintendo 64' started by marshallh, Dec 31, 2016.

  1. marshallh .

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    <insert pic here>

    Several years ago I started work on what would become my last N64 portable.

    Kept poking at it every now and then, even switched CAD packages.

    It'll be basically the ultimate N64 portable ever built. Posts to follow
     
  2. marshallh .

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    Verification board

    As the portable involves redesigning the N64 from scratch, I need a way to validate my schematic/layout of this important part without risking hundreds of dollars on the final board. So, this is the board so far - basically a N64 hooked up to custom video processor.

    [​IMG]

    It is intended to directly drive the digital 640x480 lcd panel I've chosen, missing is a lot of stuff which will be updated.
     
    Last edited: Jan 12, 2017
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  3. Aurelio The Fixer ᕕ( ᐛ )ᕗ Staff Member . . . . .

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    Ohhh yes! I was waiting for something like this! :)
     
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  4. marshallh .

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    Old design

    This is as far as I got in Eagle, which gives you an impression of the level of integration. The design is really crap and has too many loose ends, so I will be redoing it in Altium but may retain some part choices. The case was going to be cut from layers of acrylic but I think I may try something else for the final one.

    [​IMG]
     
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  5. ShockSlayer Ivan - the tyranny of evil men . .

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    why not just use a PSP
     
  6. marshallh .

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    Rambus Channel routing

    I don't think anybody who's tried this has before has ever got it working, and this is probably one reason why. Rambus is very picky and needs controlled impedance traces, with careful attention towards return paths.

    Interestingly, Nintendo seems to have overdone the current control program reference. They used two low impedance tracks before a shunt to ground, maybe as a hack for 2layer.

    [​IMG]
     
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  7. Noah The Manager Staff Member . . .

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    The stream last night was amazing. Can't wait to see how this turns out!
    :happyshiba:
     
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  8. marshallh .

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    Off to the fab. LCD power was really annoying, 5 voltages required and 4 power supplies.

    [​IMG]

    [​IMG]
     
    Last edited: Jan 2, 2017
  9. Aurelio The Fixer ᕕ( ᐛ )ᕗ Staff Member . . . . .

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    Looks amazing. Can't wait to see the final result
     
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  10. ShockSlayer Ivan - the tyranny of evil men . .

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  11. dark_samus .

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    Just found this... Gotta say, that's some damn fine work, can't wait to see the final result!
     
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  12. marshallh .

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    SUPP verification board

    This board has all the other random circuits I need to test out before committing to the final PCB. It's not complete, but so far there is:

    1. PCM5100 i2s DAC
    2. Class AB headphone amp
    3. Class D 2Wx2 speaker amp with auto gain control and volume leveling
    4. Li-po fast charger (3A)
    5. Li-po fuel gauge and charge balancing
    6. Kinetis power management/N64 controller MCU

    So 3 different I2C controlled devices.

    I will edit this post as the board progresses.

    [​IMG]

    [​IMG]
     
    Last edited: Jan 12, 2017
  13. Wadebrody .

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    This thread is pure beauty
     
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  14. marshallh .

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    5" test lcd acquired. Has a driver board but we'll be driving it directly in full digital

    [​IMG]
     
  15. Fruity_Grebbles .

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    *drool*
     
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  16. marshallh .

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    Joysticks!

    [​IMG]
     
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  17. marshallh .

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    Screen test with VGA input, yup it works

    [​IMG]
     
  18. Wadebrody .

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    That looks so much better than my N64 on an hdtv
     
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  19. cheese the tallest memer in town Staff Member . . .

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    That's because it is
     
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  20. Acronell Aquafam .

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    Savage


    This is looking amazing @marshallh
     
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