diff --git a/trunk/src/boards/178.cpp b/trunk/src/boards/178.cpp
index 775fece9..65e98a12 100644
--- a/trunk/src/boards/178.cpp
+++ b/trunk/src/boards/178.cpp
@@ -29,6 +29,12 @@ static uint8 reg[4];
 static uint8 *WRAM = NULL;
 static uint32 WRAMSIZE;
 
+// Tennis with VR sensor, very simple behaviour
+extern void GetMouseData(uint32 (&md)[3]);
+static uint32 MouseData[3], click, lastclick;
+static int32 SensorDelay;
+
+// highly experimental, not actually working, just curious if it hapen to work with some other decoder
 // SND Registers
 static uint8 pcm_enable = 0;
 static int16 pcm_latch = 0x3F6, pcm_clock = 0x3F6;
@@ -40,41 +46,41 @@ static SFORMAT StateRegs[] =
 	{ 0 }
 };
 
-static int16 step_size[49] = {
-	16, 17, 19, 21, 23, 25, 28, 31, 34, 37,
-	41, 45, 50, 55, 60, 66, 73, 80, 88, 97,
-	107, 118, 130, 143, 157, 173, 190, 209, 230, 253,
-	279, 307, 337, 371, 408, 449, 494, 544, 598, 658,
-	724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552
-};	//49 items
-static int32 step_adj[16] = { -1, -1, -1, -1, 2, 5, 7, 9, -1, -1, -1, -1, 2, 5, 7, 9 };
+//static int16 step_size[49] = {
+//	16, 17, 19, 21, 23, 25, 28, 31, 34, 37,
+//	41, 45, 50, 55, 60, 66, 73, 80, 88, 97,
+//	107, 118, 130, 143, 157, 173, 190, 209, 230, 253,
+//	279, 307, 337, 371, 408, 449, 494, 544, 598, 658,
+//	724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552
+//};	//49 items
+//static int32 step_adj[16] = { -1, -1, -1, -1, 2, 5, 7, 9, -1, -1, -1, -1, 2, 5, 7, 9 };
 
 //decode stuff
-static int32 jedi_table[16 * 49];
-static int32 acc = 0;	//ADPCM accumulator, initial condition must be 0
-static int32 decstep = 0;	//ADPCM decoding step, initial condition must be 0
+//static int32 jedi_table[16 * 49];
+//static int32 acc = 0;	//ADPCM accumulator, initial condition must be 0
+//static int32 decstep = 0;	//ADPCM decoding step, initial condition must be 0
 
-static void jedi_table_init() {
-	int step, nib;
+//static void jedi_table_init() {
+//	int step, nib;
+//
+//	for (step = 0; step < 49; step++) {
+//		for (nib = 0; nib < 16; nib++) {
+//			int value = (2 * (nib & 0x07) + 1) * step_size[step] / 8;
+//			jedi_table[step * 16 + nib] = ((nib & 0x08) != 0) ? -value : value;
+//		}
+//	}
+//}
 
-	for (step = 0; step < 49; step++) {
-		for (nib = 0; nib < 16; nib++) {
-			int value = (2 * (nib & 0x07) + 1) * step_size[step] / 8;
-			jedi_table[step * 16 + nib] = ((nib & 0x08) != 0) ? -value : value;
-		}
-	}
-}
-
-static uint8 decode(uint8 code) {
-	acc += jedi_table[decstep + code];
-	if ((acc & ~0x7ff) != 0)	// acc is > 2047
-		acc |= ~0xfff;
-	else acc &= 0xfff;
-	decstep += step_adj[code & 7] * 16;
-	if (decstep < 0) decstep = 0;
-	if (decstep > 48 * 16) decstep = 48 * 16;
-	return (acc >> 8) & 0xff;
-}
+//static uint8 decode(uint8 code) {
+//	acc += jedi_table[decstep + code];
+//	if ((acc & ~0x7ff) != 0)	// acc is > 2047
+//		acc |= ~0xfff;
+//	else acc &= 0xfff;
+//	decstep += step_adj[code & 7] * 16;
+//	if (decstep < 0) decstep = 0;
+//	if (decstep > 48 * 16) decstep = 48 * 16;
+//	return (acc >> 8) & 0xff;
+//}
 
 static void Sync(void) {
 	uint32 sbank = reg[1] & 0x7;
@@ -109,11 +115,11 @@ static DECLFW(M178WriteSnd) {
 		if (V & 0xF0) {
 			pcm_enable = 1;
 //			pcmwrite(0x4011, (V & 0xF) << 3);
-			pcmwrite(0x4011, decode(V & 0xf));
+//			pcmwrite(0x4011, decode(V & 0xf));
 		} else
 			pcm_enable = 0;
-	} else
-		FCEU_printf("misc %04x:%02x\n", A, V);
+	}// else
+//		FCEU_printf("misc %04x:%02x\n", A, V);
 }
 
 static DECLFR(M178ReadSnd) {
@@ -123,13 +129,19 @@ static DECLFR(M178ReadSnd) {
 		return X.DB;
 }
 
+static DECLFR(M178ReadSensor) {
+	X6502_IRQEnd(FCEU_IQEXT);		// hacky-hacky, actual reg is 6000 and it clear IRQ while reading, but then I need another mapper lol
+	return 0x00;
+}
+
 static void M178Power(void) {
-	reg[0] = reg[1] = reg[2] = reg[3] = 0;
+	reg[0] = reg[1] = reg[2] = reg[3] = SensorDelay = 0;
 	Sync();
-	pcmwrite = GetWriteHandler(0x4011);
+//	pcmwrite = GetWriteHandler(0x4011);
 	SetWriteHandler(0x4800, 0x4fff, M178Write);
 	SetWriteHandler(0x5800, 0x5fff, M178WriteSnd);
 	SetReadHandler(0x5800, 0x5fff, M178ReadSnd);
+	SetReadHandler(0x5000, 0x5000, M178ReadSensor);
 	SetReadHandler(0x6000, 0x7fff, CartBR);
 	SetWriteHandler(0x6000, 0x7fff, CartBW);
 	SetReadHandler(0x8000, 0xffff, CartBR);
@@ -137,13 +149,25 @@ static void M178Power(void) {
 }
 
 static void M178SndClk(int a) {
-	if (pcm_enable) {
-		pcm_latch -= a;
-		if (pcm_latch <= 0) {
-			pcm_latch += pcm_clock;
-			pcm_enable = 0;
-		}
+	SensorDelay += a;
+	if(SensorDelay > 0x32768) {
+		SensorDelay -= 32768;
+		GetMouseData (MouseData);
+		lastclick = click;
+		click = MouseData[2] & 1;	// to prevent from continuos IRQ trigger if button is held.
+									// actual circuit is just a D-C-R edge detector for IR-sensor
+									// triggered by the active IR bat.
+		if(lastclick && !click)
+			X6502_IRQBegin(FCEU_IQEXT);
 	}
+			
+//	if (pcm_enable) {
+//		pcm_latch -= a;
+//		if (pcm_latch <= 0) {
+//			pcm_latch += pcm_clock;
+//			pcm_enable = 0;
+//		}
+//	}
 }
 
 static void M178Close(void) {
@@ -162,7 +186,7 @@ void Mapper178_Init(CartInfo *info) {
 	GameStateRestore = StateRestore;
 	MapIRQHook = M178SndClk;
 
-	jedi_table_init();
+//	jedi_table_init();
 
 	WRAMSIZE = 32768;
 	WRAM = (uint8*)FCEU_gmalloc(WRAMSIZE);
diff --git a/trunk/src/boards/addrlatch.cpp b/trunk/src/boards/addrlatch.cpp
index dc0128ed..b18ac2d9 100644
--- a/trunk/src/boards/addrlatch.cpp
+++ b/trunk/src/boards/addrlatch.cpp
@@ -303,7 +303,7 @@ static void M212Sync(void) {
 }
 
 void Mapper212_Init(CartInfo *info) {
-	Latch_Init(info, M212Sync, M212Read, 0xFFFF, 0x8000, 0xFFFF, 0);
+	Latch_Init(info, M212Sync, M212Read, 0x0000, 0x8000, 0xFFFF, 0);
 }
 
 //------------------ Map 213 ---------------------------