+/* Project 16 Source Code~
+ * Copyright (C) 2012-2015 sparky4 & pngwen & andrius4669
+ *
+ * This file is part of Project 16.
+ *
+ * Project 16 is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Project 16 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>, or
+ * write to the Free Software Foundation, Inc., 51 Franklin Street,
+ * Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef __16_SND_H_
+#define __16_SND_H_
+
+#include "src/lib/16_head.h"
+
+#define MIN_REGISTER 0x01\r
+#define MAX_REGISTER 0xF5\r
+#define ADLIB_FM_ADDRESS 0x388 /* adlib address/status register */\r
+#define ADLIB_FM_DATA 0x389 /* adlib data register */
+
+/*\r
+* FM Instrument definition for .SBI files - SoundBlaster instrument\r
+* - these are the important parts - we will skip the header, but since\r
+* I am not sure where it starts and ends so I have had to guess.\r
+* However it SEEMS! to work. Each array has two values, one for\r
+* each operator.\r
+*/\r
+typedef struct{\r
+ byte SoundCharacteristic[2]; /* modulator frequency multiple... */\r
+ byte Level[2]; /* modulator frequency level... */\r
+ byte AttackDecay[2]; /* modulator attack/decay... */\r
+ byte SustainRelease[2]; /* modulator sustain/release... */\r
+ byte WaveSelect[2]; /* output waveform distortion */\r
+ byte Feedback; /* feedback algorithm and strength */\r
+} FMInstrument;\r
+
+
+void opl2out(word reg, word data);
+void opl3out(word reg, word data);
+void opl3exp(word data);
+
+void FMReset(void/*int percusiveMode*/);
+void FMKeyOff(int voice);
+void FMKeyOn(int voice, int freq, int octave);
+void FMSetVoice(int voiceNum, FMInstrument *ins);
+
+#endif /*__16_SND_H_*/