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Backport OPL2Board

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2025-09-13 19:44:37 -03:00
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hardware/externalopl.rst Normal file
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External OPL audio
==================
The **YMOPL2Board** :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.
Usage
-----
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>`_.
2. Connect the Arduino board to the host system.
3. Select the **YMOPL2Board (External Device)** sound card on the :ref:`emulated machine's configuration <settings/sound:Sound card #1-#4>`.
4. Use the *Configure* button to select the Arduino's serial port.
.. note::
* The **OPL3 Duo!** board is currently not supported.
* 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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index.rst
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hardware/ideterqua
hardware/network
hardware/isabugger
hardware/externalopl
.. toctree::
:maxdepth: 1

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settings/sound.rst
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Emulation for the Yamaha OPL series of synthesizers (used by many of the emulated cards) is provided by a modified `Nuked OPL3 <https://github.com/nukeykt/Nuked-OPL3>`_ or `ymfm <https://github.com/aaronsgiles/ymfm>`_ library, per the :ref:`selection below <settings/sound:FM synth driver>`. MOS Technology 6581 SID emulation for the Innovation SSI-2001 and The Entertainer is provided by the reSIDfp component of the `libsidplayfp <https://github.com/libsidplayfp/libsidplayfp>`_ library. General Instrument AY-3-8913 emulation for the Mindscape Music Board is provided by the `Ayumi <http://sovietov.com/app/ayumi/ayumi.html>`_ library.
The **YMOPL2Board** requires an external hardware device containing an OPL2 chip. See :doc:`../hardware/externalopl` for more information.
MIDI Out Device
---------------