NeoGeo to Atari Adapter (Bliss-Box Bridge Universal Adapter)

How the NeoGeo to Atari Adapter Works

The Bliss-Box Bridge Adapter uses a communication protocol called LLAPI(Low-Level API). LLAPI was originally developed for internal Bliss-Box products, but it is now fully open-source for the community. All modern Bliss-Box adapters support LLAPI, allowing the Bridge to read the controller’s raw data and translate it into the format required by the output device—acting just like a native controller.

Once connected, the Bridge communicates seamlessly between your Neo Geo / Famicom and your Atari Console.

Supported Bliss-Box Adapters

 

Supported Atari Consoles

  • Atari 2600
  • Atari 7800
  • Atari 5200
  • Atari Jaguar
  • Atari Game Station Pro

Features

  • Wide peripheral support
    Works with keypads, paddles, joysticks, arcade sticks, and standard controllers.

  • Console-synced timing
    Latency remains tied to the original console’s timing for accurate input response.

  • Flexible controller mapping
    Pre-flashed and runtime mapping options available.

  • Full Bliss-Box feature set
    All LLAPI-enabled adapters unlock the complete range of Bliss-Box capabilities.

     

    Setup Guide

    1. Connect your NeoGeo / Famicom controller to the Bliss-Box adapter using the DB15 cable.

    2. Plug the adapter’s USB output into the Bliss-Box Bridge.

    3. Ensure the Bridge firmware is flashed with the retro Firmware

      • Connect the Bridge to your Atari console with the correct output cable.

      • Your controller should now register as a native Atari controller

       

      Where to Buy

      You can purchase the Bliss-Box Bridge and compatible DB15 cable directly from our online store: Visit Bliss-Box.com. You will need both a Bridge and an Adapter that supports LLAPI. 

       

      Related Adapters

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      Effective Date: September 2025

       

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