+}
+
+/* Function: FMResest *******************************************************\r
+*\r
+* Description: quick and dirty sound card reset (zeros all\r
+* registers).\r
+*\r
+*/\r
+void FMReset(void/*int percusiveMode*/)
+{\r
+ int i;\r
+\r
+ /* zero all registers */\r
+ for(i = MIN_REGISTER; i < MAX_REGISTER+1; i++) opl2out(i, 0);\r
+\r
+ /* allow FM chips to control the waveform of each operator */\r
+ opl2out(0x01, 0x20);\r
+\r
+ /* set rhythm enabled (6 melodic voices, 5 percussive) */\r
+ opl2out(0xBD, 0x20);\r
+\r
+ //FMSetPercusiveMode(percusiveMode);\r
+} /* End of FMReset */
+
+/* Function: FMKeyOff *******************************************************\r
+*\r
+* Parameters: voice - which voice to turn off.\r
+*\r
+* Description: turns off the specified voice.\r
+*\r
+*/\r
+void FMKeyOff(int voice)
+{\r
+ int regNum;\r
+\r
+ /* turn voice off */\r
+ regNum = 0xB0 + voice % 11;//NUMVOICE;\r
+ opl2out(regNum, 0x0E);\r
+} /* End of FMKeyOff */\r
+\r
+/* Function: FMKeyOn *******************************************************\r
+*\r
+* Parameters: voice - which voice to turn on.\r
+* freq - its frequency (note).\r
+* octave - its octave.\r
+*\r
+* Description: turns on a voice of specfied frequency and\r
+* octave.\r
+*\r
+*/\r
+void FMKeyOn(int voice, int freq, int octave)
+{\r
+ int regNum, tmp;\r
+\r
+ regNum = 0xA0 + voice % 11;//NUMVOICE;\r
+ opl2out(regNum, freq & 0xff);\r
+ regNum = 0xB0 + voice % 11;//NUMVOICE;\r
+ tmp = (freq >> 8) | (octave << 2) | 0x20;
+ opl2out(regNum, tmp);\r
+} /* End of FMKeyOn */
+
+/* Function: FMSetVoice *****************************************************\r
+*\r
+* Parameters: voiceNum - which voice to set.\r
+* ins - instrument to set voice.\r
+*\r
+* Description: sets the instrument of a voice.\r
+*\r
+*/\r
+void FMSetVoice(int voiceNum, FMInstrument *ins){\r
+ int opCellNum, cellOffset;\r
+\r
+ voiceNum %= 11;//NUMVOICE;\r
+ cellOffset = voiceNum % 3 + ((voiceNum / 3) << 3);\r
+\r
+ /* set sound characteristic */\r
+ opCellNum = 0x20 + (char)cellOffset;\r
+ opl2out(opCellNum, ins->SoundCharacteristic[0]);\r
+ opCellNum += 3;\r
+ opl2out(opCellNum, ins->SoundCharacteristic[1]);\r
+\r
+ /* set level/output */\r
+ opCellNum = 0x40 + (char)cellOffset;\r
+ opl2out(opCellNum, ins->Level[0]);\r
+ opCellNum += 3;\r
+ opl2out(opCellNum, ins->Level[1]);\r
+\r
+ /* set Attack/Decay */\r
+ opCellNum = 0x60 + (char)cellOffset;\r
+ opl2out(opCellNum, ins->AttackDecay[0]);\r
+ opCellNum += 3;\r
+ opl2out(opCellNum, ins->AttackDecay[1]);\r
+\r
+ /* set Sustain/Release */\r
+ opCellNum = 0x80 + (char)cellOffset;\r
+ opl2out(opCellNum, ins->SustainRelease[0]);\r
+ opCellNum += 3;\r
+ opl2out(opCellNum, ins->SustainRelease[1]);\r
+\r
+ /* set Wave Select */\r
+ opCellNum = 0xE0 + (char)cellOffset;\r
+ opl2out(opCellNum, ins->WaveSelect[0]);\r
+ opCellNum += 3;\r
+ opl2out(opCellNum, ins->WaveSelect[1]);\r
+\r
+ /* set Feedback/Selectivity */\r
+ opCellNum = (byte)0xC0 + (byte)voiceNum;\r
+ opl2out(opCellNum, ins->Feedback);\r
+} /* End of FMSetVoice */