NES gamepads on Famicom?

Discussion in 'Nintendo Game Development' started by mdmx, May 25, 2008.

  1. mdmx

    mdmx Familiar Face

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    Is it possible to use the NES gamepads on the external controller port of the Famicom? A friend of mine told me that it should be possible with an adaptor or some soldering;-) Unfortunately I haven't found any information on the internet. Does anyone ever tried such a mod?
     
  2. Jamtex

    Jamtex Adult Orientated Mahjong Connoisseur

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    Quite simple just a case of connecting the right pins to the right pins, common means shared by both joypads.

    Famicom 15 pin port (numbering as shown on the connector)

    1 - Ground (common)
    7 - Player 2 Data
    9 - Player 2 Clock
    12 - Strobe (Common)
    13 - Player 1 Data
    14 - Player 1 Clock
    15 - +5V (Common)

    NES pad

    (Looking at the joystick port on the machine top to bottom, left to right (4 pins then 3 pins)

    1 - Ground
    2 - Clock
    3 - Strobe
    4 - Data

    5 - +5V
    6 - nc
    7 - nc
     
  3. Speed

    Speed Robust Member

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    So theoretically it would be possible to build a dongle for the Famicom port that has 2 female NES controller ports for 2 players?
     
  4. Jamtex

    Jamtex Adult Orientated Mahjong Connoisseur

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    Yes, see pin outs. :p
     
  5. mdmx

    mdmx Familiar Face

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    Are such dongles commercially available? I'm looking for an adaptor NES -> Famicom.
     
  6. Jamtex

    Jamtex Adult Orientated Mahjong Connoisseur

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    Never seen one, mainly as the Famicom plus units have NES connectors and AV out so it's easier to get one of those.
     
  7. mdmx

    mdmx Familiar Face

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    I own a PC Doctor Jr, which has 2 Famicom controller ports. Unfortunately I don't have any gamepads for it. I haven't found a useful controller when I was in Japan. I've seen only big and expensive Joysticks. So I thought, why don't use the classic NES pads.
     
  8. Jamtex

    Jamtex Adult Orientated Mahjong Connoisseur

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    The original famicom doesn't have any Joypad ports apart from a 15 pin D low density plug.

    The clones with 9 pin D plugs do use the same protocols as the Famicom does but there doesn't seem to be much in the way of data concerning the wiring but with a multimetre and maybe a logic metre you could probably work out which pin goes where or failing that plug in a clone Famicom joypad into it, if you have a lot try checking to see if the pins are connected up the same...
     
  9. mdmx

    mdmx Familiar Face

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    The PC Doctor JR has exactly two of these plugs.
     
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