1 files changed, 79 insertions, 0 deletions
diff --git a/src/chips/mame_opl2.cpp b/src/chips/mame_opl2.cpp
new file mode 100644
index 0000000..0b765de
--- /dev/null
+++ b/src/chips/mame_opl2.cpp
@@ -0,0 +1,79 @@
+/*
+ * Interfaces over Yamaha OPL3 (ym3812) chip emulators
+ *
+ * Copyright (c) 2017-2025 Vitaly Novichkov (Wohlstand)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "mame_opl2.h"
+#include "mame/opl.h"
+#include <cstring>
+
+MameOPL2::MameOPL2() :
+    OPLChipBaseT()
+{
+    m_chip = YM3812Create(false);
+    setRate(m_rate);
+}
+
+MameOPL2::~MameOPL2()
+{
+    OPLEmul *chip_r = reinterpret_cast<OPLEmul*>(m_chip);
+    delete chip_r;
+}
+
+void MameOPL2::setRate(uint32_t rate)
+{
+    OPLChipBaseT::setRate(rate);
+    OPLEmul *chip_r = reinterpret_cast<OPLEmul*>(m_chip);
+    chip_r->Reset();
+}
+
+void MameOPL2::reset()
+{
+    OPLChipBaseT::reset();
+    OPLEmul *chip_r = reinterpret_cast<OPLEmul*>(m_chip);
+    chip_r->Reset();
+}
+
+void MameOPL2::writeReg(uint16_t addr, uint8_t data)
+{
+    OPLEmul *chip_r = reinterpret_cast<OPLEmul*>(m_chip);
+    chip_r->WriteReg(addr, data);
+}
+
+void MameOPL2::nativeGenerate(int16_t *frame)
+{
+    OPLEmul *chip_r = reinterpret_cast<OPLEmul*>(m_chip);
+    frame[0] = 0;
+    chip_r->UpdateS(frame, 1);
+    frame[1] = frame[0];
+}
+
+const char *MameOPL2::emulatorName()
+{
+    return "MAME OPL2";
+}
+
+bool MameOPL2::hasFullPanning()
+{
+    return false;
+}
+
+OPLChipBase::ChipType MameOPL2::chipType()
+{
+    return CHIPTYPE_OPL2;
+}