diff --git a/src/boards/546.c b/src/boards/546.c
new file mode 100644
index 0000000..df9e8ef
--- /dev/null
+++ b/src/boards/546.c
@@ -0,0 +1,70 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2020
+ *
+ * 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"
+#include "asic_mmc1.h"
+#include "wram.h"
+
+static uint8 reg;
+
+static void sync () {
+	MMC1_syncWRAM(0);
+	if (reg &0x10)
+		MMC1_syncPRG(0x0F, 0x10);
+	else
+	if (reg &0x20)
+		setprg32(0x8000, reg >>1);
+	else {
+		setprg16(0x8000, reg);
+		setprg16(0xC000, reg);
+	}
+	SetupCartCHRMapping(0, CHRptr[0], CHRsize[0], reg &0x80? 0: 1);
+	setchr8(0);
+	MMC1_syncMirror();
+}
+
+static DECLFW (writeReg) {
+	if (!(A &0x0F00)) {
+		reg = A &0xFF;
+		sync();
+	}
+	MMC1_writeReg(A, V);
+}
+
+static void reset () {
+	reg = 0;
+	MMC1_clear();
+}
+
+static void power () {
+	reg = 0;
+	MMC1_power();
+	SetWriteHandler(0x8000, 0x9FFF, writeReg);
+}
+
+void Mapper546_Init (CartInfo *info) {
+	MMC1_init(info, sync, MMC1_TYPE_MMC1B, NULL, NULL, NULL, NULL);
+	WRAM_init(info, 8);
+	info->Power = power;
+	info->Reset = reset;
+	AddExState(&reg, 1, 0, "EXPR");
+}
diff --git a/src/ines.c b/src/ines.c
index 4fb2ea5..51df3dd 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -970,6 +970,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "5-in-1 (CH-501)",          543, Mapper543_Init         )
 	INES_BOARD( "WAIXING FS306",            544, Mapper544_Init         )
 	INES_BOARD( "ST-80",                    545, Mapper545_Init         )
+	INES_BOARD( "03-101",                   546, Mapper546_Init         )
 	INES_BOARD( "Kaiser KS-7016B",          549, Mapper549_Init         )
 	INES_BOARD( "",                         550, Mapper550_Init         )
 	INES_BOARD( "",              		551, Mapper178_Init         )
diff --git a/src/ines.h b/src/ines.h
index f6cb9d4..a7b1b53 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -438,6 +438,7 @@ void Mapper542_Init(CartInfo *);
 void Mapper543_Init(CartInfo *);
 void Mapper544_Init(CartInfo *);
 void Mapper545_Init(CartInfo *);
+void Mapper546_Init(CartInfo *);
 void Mapper549_Init(CartInfo *);
 void Mapper550_Init(CartInfo *);
 void Mapper552_Init(CartInfo *);