diff --git a/cpu.cpp b/cpu.cpp
index 154b1b34..474fba8a 100644
--- a/cpu.cpp
+++ b/cpu.cpp
@@ -295,6 +295,7 @@ void S9xReset (void)
 	S9xResetPPU();
 	S9xResetDMA();
 	S9xResetAPU();
+    S9xResetMSU();
 
 	if (Settings.DSP)
 		S9xResetDSP();
@@ -331,6 +332,7 @@ void S9xSoftReset (void)
 	S9xSoftResetPPU();
 	S9xResetDMA();
 	S9xSoftResetAPU();
+    S9xResetMSU();
 
 	if (Settings.DSP)
 		S9xResetDSP();
diff --git a/memmap.cpp b/memmap.cpp
index fd8f5ac1..c964c465 100644
--- a/memmap.cpp
+++ b/memmap.cpp
@@ -1275,12 +1275,6 @@ static bool8 is_GNEXT_Add_On (const uint8 *data, uint32 size)
 		return (FALSE);
 }
 
-static bool8 MsuRomExists (void)
-{
-	struct stat buf;
-	return (stat(S9xGetFilename(".msu", ROMFILENAME_DIR), &buf) == 0);
-}
-
 int CMemory::ScoreHiROM (bool8 skip_header, int32 romoff)
 {
 	uint8	*buf = ROM + 0xff00 + romoff + (skip_header ? 0x200 : 0);
@@ -2547,7 +2541,7 @@ void CMemory::InitROM (void)
 	}
 
 	// MSU1
-	Settings.MSU1 = MsuRomExists();
+	Settings.MSU1 = S9xMSU1ROMExists();
 
 	//// Map memory and calculate checksum
 
diff --git a/msu1.cpp b/msu1.cpp
index 6b75bfb2..daa69897 100644
--- a/msu1.cpp
+++ b/msu1.cpp
@@ -251,7 +251,7 @@ bool DataOpen()
 	return dataFile.is_open();
 }
 
-void S9xMSU1Init(void)
+void S9xResetMSU(void)
 {
 	MSU1.MSU1_STATUS		= 0;
 	MSU1.MSU1_DATA_SEEK		= 0;
@@ -277,9 +277,21 @@ void S9xMSU1Init(void)
 	if (audioFile.is_open())
 		audioFile.close();
 
+	Settings.MSU1 = S9xMSU1ROMExists();
+}
+
+void S9xMSU1Init(void)
+{
+	S9xResetMSU();
 	DataOpen();
 }
 
+bool S9xMSU1ROMExists(void)
+{
+	struct stat buf;
+	return (stat(S9xGetFilename(".msu", ROMFILENAME_DIR), &buf) == 0);
+}
+
 void S9xMSU1Generate(int sample_count)
 {
 	partial_samples += 441000 * sample_count;
diff --git a/msu1.h b/msu1.h
index 6192a783..04a22941 100644
--- a/msu1.h
+++ b/msu1.h
@@ -226,7 +226,9 @@ enum SMSU1_CMD {
 
 extern struct SMSU1	MSU1;
 
+void S9xResetMSU(void);
 void S9xMSU1Init(void);
+bool S9xMSU1ROMExists(void);
 void S9xMSU1Generate(int sample_count);
 uint8 S9xMSU1ReadPort(int port);
 void S9xMSU1WritePort(int port, uint8 byte);