diff --git a/source/Applewin.cpp b/source/Applewin.cpp
index 90c29507..75209075 100644
--- a/source/Applewin.cpp
+++ b/source/Applewin.cpp
@@ -79,6 +79,7 @@ FILE*		g_fh			= NULL;
 bool		g_bDisableDirectInput = false;
 bool		g_bDisableDirectSound = false;
 bool		g_bDisableDirectSoundMockingboard = false;
+int			g_nMemoryClearType = -1;
 
 IPropertySheet&		sg_PropertySheet = * new CPropertySheet;
 CSuperSerialCard	sg_SSC;
@@ -839,6 +840,17 @@ int APIENTRY WinMain(HINSTANCE passinstance, HINSTANCE, LPSTR lpCmdLine, int)
 		{
 			g_bDisableDirectSoundMockingboard = true;
 		}
+		else if (strcmp(lpCmdLine, "-memclear") == 0)
+		{
+			lpCmdLine = GetCurrArg(lpNextArg);
+			lpNextArg = GetNextArg(lpNextArg);
+			g_nMemoryClearType = atoi(lpCmdLine);
+			if (g_nMemoryClearType < 0)
+				g_nMemoryClearType = 0;
+			else
+			if (g_nMemoryClearType >= NUM_MIP)
+				g_nMemoryClearType = NUM_MIP - 1;
+		}
 #ifdef RAMWORKS
 		else if (strcmp(lpCmdLine, "-r") == 0)		// RamWorks size [1..127]
 		{
diff --git a/source/Applewin.h b/source/Applewin.h
index c5c4d3bd..2621d3ba 100644
--- a/source/Applewin.h
+++ b/source/Applewin.h
@@ -42,6 +42,7 @@ extern FILE*      g_fh;				// Filehandle for log file
 extern bool       g_bDisableDirectInput;				// Cmd line switch: don't init DI (so no DIMouse support)
 extern bool       g_bDisableDirectSound;				// Cmd line switch: don't init DS (so no MB/Speaker support)
 extern bool       g_bDisableDirectSoundMockingboard;	// Cmd line switch: don't init MB support
+extern int        g_nMemoryClearType;					// Cmd line switch: use specific MIP (Memory Initialization Pattern)
 
 extern SS_CARDTYPE g_Slot4;	// Mockingboard, Z80, Mouse in slot4
 extern SS_CARDTYPE g_Slot5;	// Mockingboard, Z80,       in slot5
diff --git a/source/Memory.cpp b/source/Memory.cpp
index 44022713..39d63e75 100644
--- a/source/Memory.cpp
+++ b/source/Memory.cpp
@@ -1391,9 +1391,15 @@ void MemReset ()
 	// OR
 	//   F2, Ctrl-F2, F7, HGR
 	DWORD clock = getRandomTime();
-	g_eMemoryInitPattern = static_cast<MemoryInitPattern_e>( clock % NUM_MIP );
-	if( g_eMemoryInitPattern == MIP_ZERO )
-		g_eMemoryInitPattern = MIP_FF_FF_00_00;
+
+	if ((g_nMemoryClearType >= 0) && (g_nMemoryClearType != MIP_RANDOM))
+		g_eMemoryInitPattern = static_cast<MemoryInitPattern_e>(g_nMemoryClearType);
+	else // random
+	{
+		g_eMemoryInitPattern = static_cast<MemoryInitPattern_e>( clock % NUM_MIP );
+		if (g_eMemoryInitPattern == MIP_RANDOM) // Twice Lucky! Force a choice.
+			g_eMemoryInitPattern = MIP_FF_FF_00_00;
+	}
 
 	switch( g_eMemoryInitPattern )
 	{
diff --git a/source/Memory.h b/source/Memory.h
index f4748f82..660bb2fc 100644
--- a/source/Memory.h
+++ b/source/Memory.h
@@ -15,10 +15,11 @@ enum
 enum MemoryInitPattern_e
 {
 	  MIP_ZERO
+	, MIP_RANDOM
 	, MIP_FF_FF_00_00
-    , MIP_FF_00_FULL_PAGE
-    , MIP_00_FF_HALF_PAGE
-    , MIP_FF_00_HALF_PAGE
+	, MIP_FF_00_FULL_PAGE
+	, MIP_00_FF_HALF_PAGE
+	, MIP_FF_00_HALF_PAGE
 	, NUM_MIP
 };
 extern MemoryInitPattern_e g_eMemoryInitPattern;