diff --git a/src/boards/375.c b/src/boards/375.c
new file mode 100644
index 0000000..93d9ec1
--- /dev/null
+++ b/src/boards/375.c
@@ -0,0 +1,125 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ * Copyright (C) 2022 negativeExponent
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include "mapinc.h"
+
+static uint8 *WRAM = NULL;
+static uint32 WRAMSIZE;
+
+static uint16 addrlatch;
+static uint8 datalatch;
+
+static void Sync(void) {
+	uint32 S = addrlatch & 1;
+	uint32 p = ((addrlatch >> 2) & 0x1F) + ((addrlatch & 0x100) >> 3) + ((addrlatch & 0x400) >> 4);
+	uint32 L = (addrlatch >> 9) & 1;
+	uint32 p_8000 = p;
+
+	if ((addrlatch >> 11) & 1)
+		p_8000 = (p & 0x7E) | (datalatch & 7);
+
+	if ((addrlatch >> 7) & 1) {
+		if (S) {
+			setprg32(0x8000, p >> 1);
+		} else {
+			setprg16(0x8000, p_8000);
+			setprg16(0xC000, p);
+		}
+	} else {
+		if (S) {
+			if (L) {
+				setprg16(0x8000, p_8000 & 0x7E);
+				setprg16(0xC000, p | 7);
+			} else {
+				setprg16(0x8000, p_8000 & 0x7E);
+				setprg16(0xC000, p & 0x78);
+			}
+		} else {
+			if (L) {
+				setprg16(0x8000, p_8000);
+				setprg16(0xC000, p | 7);
+			} else {
+				setprg16(0x8000, p_8000);
+				setprg16(0xC000, p & 0x78);
+			}
+		}
+	}
+
+	if ((addrlatch & 0x80) == 0x80)
+		/* CHR-RAM write protect hack, needed for some multicarts */
+		SetupCartCHRMapping(0, CHRptr[0], 0x2000, 0);
+	else
+		SetupCartCHRMapping(0, CHRptr[0], 0x2000, 1);
+
+	setmirror(((addrlatch >> 1) & 1) ^ 1);
+	setchr8(0);
+	setprg8r(0x10, 0x6000, 0);
+}
+
+static DECLFR(M375Read) {
+	return CartBR(A);
+}
+
+static DECLFW(M375Write) {
+	if (addrlatch & 0x800)
+		datalatch = V;
+	else {
+		addrlatch = A;
+		datalatch = V;
+	}
+	Sync();
+}
+
+static void M375Reset(void) {
+	addrlatch = 0;
+	datalatch = 0;
+	Sync();
+}
+
+static void M375Power(void) {
+	addrlatch = 0;
+	datalatch = 0;
+	Sync();
+	setchr8(0);
+	SetReadHandler(0x8000, 0xFFFF, CartBR);
+	SetWriteHandler(0x8000, 0xFFFF, M375Write);
+	if (WRAMSIZE) {
+		SetReadHandler(0x6000, 0xFFFF, CartBR);
+		SetWriteHandler(0x6000, 0x7FFF, CartBW);
+		FCEU_CheatAddRAM(WRAMSIZE >> 10, 0x6000, WRAM);
+	}
+}
+
+static void StateRestore(int version) {
+	Sync();
+}
+
+void Mapper375_Init(CartInfo *info) {
+	info->Power = M375Power;
+	info->Reset = M375Reset;
+	GameStateRestore = StateRestore;
+	AddExState(&addrlatch, 2, 0, "ADDR");
+	AddExState(&datalatch, 1, 0, "DATA");
+
+	WRAMSIZE = 8192;
+	WRAM = (uint8*)FCEU_gmalloc(WRAMSIZE);
+	SetupCartPRGMapping(0x10, WRAM, WRAMSIZE, 1);
+	AddExState(WRAM, WRAMSIZE, 0, "WRAM");
+}
diff --git a/src/ines.c b/src/ines.c
index 524475e..37b3d1c 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -769,6 +769,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "Golden Mario Party II - Around the World 6-in-1", 370, Mapper370_Init         )
 	INES_BOARD( "MMC3 PIRATE SFC-12",       372, Mapper372_Init         )
 	INES_BOARD( "95/96 Super HiK 4-in-1",   374, Mapper374_Init         )
+	INES_BOARD( "135-in-1",                 375, Mapper375_Init         )
 	INES_BOARD( "YY841155C",                376, Mapper376_Init         )
 	INES_BOARD( "JY-111/JY-112",            377, Mapper377_Init         )
 	INES_BOARD( "42 to 80,000 (970630C)",   380, Mapper380_Init         )
diff --git a/src/ines.h b/src/ines.h
index bfcf03c..6307777 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -280,6 +280,7 @@ void Mapper369_Init(CartInfo *);
 void Mapper370_Init(CartInfo *);
 void Mapper372_Init(CartInfo *);
 void Mapper374_Init(CartInfo *);
+void Mapper375_Init(CartInfo *);
 void Mapper376_Init(CartInfo *);
 void Mapper377_Init(CartInfo *);
 void Mapper380_Init(CartInfo *);