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17 lines
989 B
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External OPL audio
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==================
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The **OPL2Board** :ref:`sound card <settings/sound:Sound card #1-#4>` allows for a real Yamaha OPL2 (YM3812) chip to be connected to the emulated machine for authentic FM synthesis output.
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Usage
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-----
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1. Connect the `OPL2 Audio Board from Cheerful Electronic <https://www.cheerful.nl/OPL2_Audio_Board/>`_ to a `supported Arduino board <https://github.com/DhrBaksteen/ArduinoOPL2/wiki/Connecting-the-OPL2-Audio-Board>`_.
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2. Connect the Arduino board to the host system.
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3. Select the **OPL2Board (External Device)** sound card on the :ref:`emulated machine's configuration <settings/sound:Sound card #1-#4>`.
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4. Use the *Configure* button to select the Arduino's serial port.
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.. note::
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* The **OPL3 Duo!** board is currently not supported.
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* Regular **PCM/wave audio** still requires an emulated sound card to be configured. If the emulated sound card provides its own OPL, it can often be **muted** through a mixer utility within the machine.
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