diff --git a/trunk/src/drivers/sdl/input.cpp b/trunk/src/drivers/sdl/input.cpp
index 2a89a789..3cf13b3c 100644
--- a/trunk/src/drivers/sdl/input.cpp
+++ b/trunk/src/drivers/sdl/input.cpp
@@ -894,10 +894,6 @@ GetMouseData (uint32 (&d)[3])
 	int x, y;
 	uint32 t;
 
-	// Don't get input when a movie is playing back
-	if (FCEUMOV_Mode (MOVIEMODE_PLAY))
-		return;
-
 	// retrieve the state of the mouse from SDL
 	t = SDL_GetMouseState (&x, &y);
 #ifdef _GTK
@@ -934,6 +930,35 @@ GetMouseData (uint32 (&d)[3])
 	// printf("mouse %d %d %d\n", d[0], d[1], d[2]);
 }
 
+void GetMouseRelative (int32 (&d)[3])
+{
+	// converts absolute mouse positions to relative ones for input devices that require this
+	
+	// The windows version additionally in fullscreen will constantly return the mouse to center screen
+	// after reading it, so that the user can endlessly keep moving the mouse.
+	// The same should eventually be implemented here, but this version should minimally provide
+	// the necessary relative input, piggybacking on the already implemented GetMouseData.
+
+	static int cx = -1;
+	static int cy = -1;
+
+	uint32 md[3];
+	GetMouseData (md);
+	
+	if (cx < 0 || cy < 0)
+	{
+		cx = md[0];
+		cy = md[1];
+	}
+
+	int dx = md[0] - cx;
+	int dy = md[1] - cy;
+	
+	d[0] = dx;
+	d[1] = dy;
+	d[2] = md[2]; // buttons
+}
+
 /**
  * Handles outstanding SDL events.
  */
@@ -1259,6 +1284,7 @@ UpdatePPadData (int w)
 }
 
 static uint32 MouseData[3] = { 0, 0, 0 };
+static int32 MouseRelative[3] = { 0, 0, 0 };
 
 static uint8 fkbkeys[0x48];
 
@@ -1293,7 +1319,7 @@ void FCEUD_UpdateInput ()
 				break;
 			case SI_MOUSE:
 			case SI_SNES_MOUSE:
-				t |= 2;
+				t |= 4;
 				break;
 		}
 	}
@@ -1338,9 +1364,17 @@ void FCEUD_UpdateInput ()
 		UpdateGamepad ();
 	}
 
-	if (t & 2)
+	// Don't get input when a movie is playing back
+	if (!FCEUMOV_Mode (MOVIEMODE_PLAY))
 	{
-		GetMouseData (MouseData);
+		if (t & 2)
+		{
+			GetMouseData (MouseData);
+		}
+		if (t & 4)
+		{
+			GetMouseRelative (MouseRelative);
+		}
 	}
 }
 
@@ -1405,7 +1439,7 @@ void InitInputInterface ()
 				break;
 			case SI_MOUSE:
 			case SI_SNES_MOUSE:
-				InputDPtr = MouseData;
+				InputDPtr = MouseRelative;
 				t |= 1;
 				break;
 		}
diff --git a/trunk/src/drivers/win/input.cpp b/trunk/src/drivers/win/input.cpp
index 58143ae0..3e93e7a4 100644
--- a/trunk/src/drivers/win/input.cpp
+++ b/trunk/src/drivers/win/input.cpp
@@ -69,6 +69,7 @@ static void PresetExport(int preset);
 static void PresetImport(int preset);
 
 static uint32 MouseData[3];
+static int32 MouseRelative[3];
 
 //force the input types suggested by the game
 void ParseGIInput(FCEUGI *gi)
@@ -418,7 +419,9 @@ void UpdateRawInputAndHotkeys()
 
 void FCEUD_UpdateInput()
 {
-	bool joy=false,mouse=false;
+	bool joy=false;
+	bool mouse=false;
+	bool mouse_relative=false;
 	EMOVIEMODE FCEUMOVState = FCEUMOV_Mode();
 
   UpdateRawInputAndHotkeys();
@@ -431,8 +434,8 @@ void FCEUD_UpdateInput()
 			case SI_SNES: 
 				UpdateGamepad(true);
 				break;
-			case SI_MOUSE: mouse=true; break;
-			case SI_SNES_MOUSE: mouse=true; break;
+			case SI_MOUSE: mouse_relative=true; break;
+			case SI_SNES_MOUSE: mouse_relative=true; break;
 			case SI_ARKANOID: mouse=true; break;
 			case SI_ZAPPER: mouse=true; break;
 			case SI_POWERPADA:
@@ -466,9 +469,11 @@ void FCEUD_UpdateInput()
 		if(joy)
 			UpdateGamepad(false);
 
-		if(mouse)
-			if(FCEUMOVState != MOVIEMODE_PLAY)	//FatRatKnight: Moved this if out of the function
-				GetMouseData(MouseData);			//A more concise fix may be desired.
+		if (FCEUMOVState != MOVIEMODE_PLAY) //FatRatKnight: Moved this if out of the function, a more concise fix may be desired.
+		{
+			if (mouse) GetMouseData(MouseData);
+			if (mouse_relative) GetMouseRelative(MouseRelative);
+		}
 	}
 }
 
@@ -518,10 +523,10 @@ void InitInputPorts(bool fourscore)
 				InputDPtr=MouseData;
 				break;
 			case SI_MOUSE:
-				InputDPtr=MouseData;
+				InputDPtr=MouseRelative;
 				break;
 			case SI_SNES_MOUSE:
-				InputDPtr=MouseData;
+				InputDPtr=MouseRelative;
 				break;
 			case SI_SNES:
 				InputDPtr=snespad_return;
diff --git a/trunk/src/drivers/win/window.cpp b/trunk/src/drivers/win/window.cpp
index 126d54e5..5fc4583b 100644
--- a/trunk/src/drivers/win/window.cpp
+++ b/trunk/src/drivers/win/window.cpp
@@ -1200,6 +1200,46 @@ void GetMouseData(uint32 (&md)[3])
 	md[2] = ((mouseb == MK_LBUTTON) ? 1 : 0) | (( mouseb == MK_RBUTTON ) ? 2 : 0);
 }
 
+void GetMouseRelative(int32 (&md)[3])
+{
+	static int cx = -1;
+	static int cy = -1;
+
+	int dx = 0;
+	int dy = 0;
+
+	bool constrain = (fullscreen != 0) && (nofocus == 0);
+
+	if (constrain || cx < 0 || cy < 0)
+	{
+		RECT window;
+		GetWindowRect(hAppWnd, &window);
+		cx = (window.left + window.right) / 2;
+		cy = (window.top + window.bottom) / 2;
+	}
+
+	POINT cursor;
+	if (GetCursorPos(&cursor))
+	{
+		dx = cursor.x - cx;
+		dy = cursor.y - cy;
+
+		if (constrain)
+		{
+			SetCursorPos(cx,cy);
+		}
+		else
+		{
+			cx = cursor.x;
+			cy = cursor.y;
+		}
+	}
+	
+	md[0] = dx;
+	md[1] = dy;
+	md[2] = ((mouseb == MK_LBUTTON) ? 1 : 0) | (( mouseb == MK_RBUTTON ) ? 2 : 0);
+}
+
 void DumpSubtitles(HWND hWnd)
 { 
 	const char filter[]="Subtitles files (*.srt)\0*.srt\0All Files (*.*)\0*.*\0\0";
@@ -2338,8 +2378,8 @@ LRESULT FAR PASCAL AppWndProc(HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam)
 				break;
 		}
 
-        if(wParam==VK_F10)
-            break;			// 11.12.08 CH4 Disable F10 as System Key dammit
+		if(wParam==VK_F10)
+			break;			// 11.12.08 CH4 Disable F10 as System Key dammit
 /*
 		if(wParam == VK_RETURN)
 		{
diff --git a/trunk/src/drivers/win/window.h b/trunk/src/drivers/win/window.h
index d0f145c8..66284072 100644
--- a/trunk/src/drivers/win/window.h
+++ b/trunk/src/drivers/win/window.h
@@ -36,6 +36,7 @@ void LoadNewGamey(HWND hParent, const char *initialdir);
 int BrowseForFolder(HWND hParent, const char *htext, char *buf);
 void SetMainWindowStuff();
 void GetMouseData(uint32 (&md)[3]);
+void GetMouseRelative(int32 (&md)[3]);
 //void ChangeMenuItemText(int menuitem, string text);
 void UpdateMenuHotkeys();
 
diff --git a/trunk/src/input/mouse.cpp b/trunk/src/input/mouse.cpp
index 17adf69c..19768252 100644
--- a/trunk/src/input/mouse.cpp
+++ b/trunk/src/input/mouse.cpp
@@ -27,27 +27,28 @@
 
 typedef struct {
 	uint8 latch;
-	int32 mx,my;
-	int32 lmx,lmy;
+	int32 dx,dy;
 	uint32 mb;
 } MOUSE;
 
 static MOUSE Mouse;
 
+// since this game only picks up 1 mickey per frame,
+// allow a single delta to spread out over a few frames
+// to make it easier to move.
+const int INERTIA = 32;
+
 static void StrobeMOUSE(int w)
 {
 	Mouse.latch = Mouse.mb & 0x03;
 
-	int32 dx = Mouse.mx - Mouse.lmx;
-	int32 dy = Mouse.my - Mouse.lmy;
+	int32 dx = Mouse.dx;
+	int32 dy = Mouse.dy;
 
-	Mouse.lmx = Mouse.mx;
-	Mouse.lmy = Mouse.my;
-
-	if      (dx > 0) Mouse.latch |= (0x2 << 2);
-	else if (dx < 0) Mouse.latch |= (0x3 << 2);
-	if      (dy > 0) Mouse.latch |= (0x2 << 4);
-	else if (dy < 0) Mouse.latch |= (0x3 << 4);
+	if      (dx > 0) { Mouse.latch |= (0x2 << 2); --Mouse.dx; }
+	else if (dx < 0) { Mouse.latch |= (0x3 << 2); ++Mouse.dx; }
+	if      (dy > 0) { Mouse.latch |= (0x2 << 4); --Mouse.dy; }
+	else if (dy < 0) { Mouse.latch |= (0x3 << 4); ++Mouse.dy; }
 
 	//FCEU_printf("Subor Mouse: %02X\n",Mouse.latch);
 }
@@ -62,9 +63,15 @@ static uint8 ReadMOUSE(int w)
 static void UpdateMOUSE(int w, void *data, int arg)
 {
 	uint32 *ptr=(uint32*)data;
-	Mouse.mx = ptr[0];
-	Mouse.my = ptr[1];
+	Mouse.dx += ptr[0]; ptr[0] = 0;
+	Mouse.dy += ptr[1]; ptr[1] = 0;
 	Mouse.mb = ptr[2];
+
+	if      (Mouse.dx >  INERTIA) Mouse.dx =  INERTIA;
+	else if (Mouse.dx < -INERTIA) Mouse.dx = -INERTIA;
+
+	if      (Mouse.dy >  INERTIA) Mouse.dy =  INERTIA;
+	else if (Mouse.dy < -INERTIA) Mouse.dy = -INERTIA;
 }
 
 static INPUTC MOUSEC={ReadMOUSE,0,StrobeMOUSE,UpdateMOUSE,0,0};
diff --git a/trunk/src/input/snesmouse.cpp b/trunk/src/input/snesmouse.cpp
index 4d13781e..782a45a7 100644
--- a/trunk/src/input/snesmouse.cpp
+++ b/trunk/src/input/snesmouse.cpp
@@ -26,9 +26,8 @@ typedef struct {
 	bool strobe;
 	uint32 latch; // latched data (read when strobe goes high to low)
 	uint32 sensitivity; // reading while strobe is high cycles sensitivity 0,1,2
-	int32 mx, my; // current screen location
-	int32 lmx, lmy; // last latched location
-	uint32 mb; // current buttons
+	int32 dx, dy; // relative position to communicate
+	int32 mb; // current buttons
 } SNES_MOUSE;
 
 static SNES_MOUSE SNESMouse;
@@ -53,11 +52,10 @@ static void WriteSNESMouse(uint8 v)
 
 	if (SNESMouse.strobe && !strobing)
 	{
-		int dx = SNESMouse.mx - SNESMouse.lmx;
-		int dy = SNESMouse.my - SNESMouse.lmy;
-
-		SNESMouse.lmx = SNESMouse.mx;
-		SNESMouse.lmy = SNESMouse.my;
+		int dx = SNESMouse.dx;
+		int dy = SNESMouse.dy;
+		SNESMouse.dx = 0;
+		SNESMouse.dy = 0;
 
 		// convert to sign and magnitude
 		bool sx = (dx < 0);
@@ -91,9 +89,10 @@ static void WriteSNESMouse(uint8 v)
 
 static void UpdateSNESMouse(int w, void *data, int arg)
 {
-	uint32 *ptr=(uint32*)data;
-	SNESMouse.mx = ptr[0]; // screen position
-	SNESMouse.my = ptr[1];
+	int32 *ptr=(int32*)data;
+
+	SNESMouse.dx += ptr[0]; ptr[0] = 0;
+	SNESMouse.dy += ptr[1]; ptr[1] = 0;
 	SNESMouse.mb = ptr[2] & 3; // bit 0 = left button, bit 1 = right button
 }