Update minidexed.h

src/minidexed.h

@@ -153,6 +153,7 @@ public:
 		TGParameterPortamentoMode,
 		TGParameterPortamentoGlissando,
 		TGParameterPortamentoTime,
+		TGParameterMonoMode,  
 		TGParameterUnknown
 	};
 
@@ -208,6 +209,7 @@ private:
 	unsigned m_nPortamentoMode[CConfig::ToneGenerators];	
 	unsigned m_nPortamentoGlissando[CConfig::ToneGenerators];	
 	unsigned m_nPortamentoTime[CConfig::ToneGenerators];	
+	bool m_bMonoMode[CConfig::ToneGenerators]; 
 	
 	unsigned m_nNoteLimitLow[CConfig::ToneGenerators];
 	unsigned m_nNoteLimitHigh[CConfig::ToneGenerators];