diff --git a/src/boards/451.c b/src/boards/451.c
new file mode 100644
index 0000000..ac7d9a2
--- /dev/null
+++ b/src/boards/451.c
@@ -0,0 +1,69 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2025 NewRisingSun
+ *
+ * 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
+ */
+
+/* Missing feature: MP3 playback, used by Haratyler MP */
+
+#include "mapinc.h"
+#include "mmc3.h"
+#include "flashrom.h"
+
+static void PRGWrap(uint32 A, uint8 V) {
+	if (A ==0x8000) V =0x00; else
+	if (A ==0xE000) V =0x30;
+	setprg8(A, V);
+}
+
+static DECLFW(Write) {
+	flashrom_write(A &0x1FFF | (Page[A >>11] +A -PRGptr[0]) &~0x1FFF, V);
+	switch (A &0xE000) {
+		case 0xA000: MMC3_CMDWrite(0xA000, A &1);
+		             break;
+		case 0xC000: MMC3_IRQWrite(0xC000, (A &0xFF) -1),
+		             MMC3_IRQWrite(0xC001, 0);
+			     MMC3_IRQWrite((A &0xFF) ==0xFF? 0xE000: 0xE001, 0);
+			     break;
+		case 0xE000: V =A <<2 &8 | A &1;
+		             MMC3_CMDWrite(0x8000, 0x40); MMC3_CMDWrite(0x8001, V <<3 |0); 
+		             MMC3_CMDWrite(0x8000, 0x41); MMC3_CMDWrite(0x8001, V <<3 |2); 
+		             MMC3_CMDWrite(0x8000, 0x42); MMC3_CMDWrite(0x8001, V <<3 |4); 
+		             MMC3_CMDWrite(0x8000, 0x43); MMC3_CMDWrite(0x8001, V <<3 |5); 
+		             MMC3_CMDWrite(0x8000, 0x44); MMC3_CMDWrite(0x8001, V <<3 |6); 
+		             MMC3_CMDWrite(0x8000, 0x45); MMC3_CMDWrite(0x8001, V <<3 |7); 
+		             MMC3_CMDWrite(0x8000, 0x46); MMC3_CMDWrite(0x8001, V |0x20); 
+     		             MMC3_CMDWrite(0x8000, 0x47); MMC3_CMDWrite(0x8001, V |0x10);
+			     break;
+	}
+}
+
+static void Power(void) {
+	GenMMC3Power();
+	SetReadHandler(0x8000, 0xFFFF, flashrom_read);
+	SetWriteHandler(0x8000, 0xFFFF, Write);
+}
+
+void Mapper451_Init(CartInfo *info) {
+	GenMMC3_Init(info, 512, 32, 0, 0);
+	pwrap = PRGWrap;
+	flashrom_init (0x37, 0x86, 65536, 0x555, 0x2AA, 0x0FFF); /* AMIC A29040B */
+	info->Power =Power;
+	info->SaveGame[0] =PRGptr[0];
+	info->SaveGameLen[0] =PRGsize[0];
+	MapIRQHook =flashrom_cpuCycle;
+}
diff --git a/src/ines.c b/src/ines.c
index e68a238..cec422f 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -873,6 +873,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "830768C",                  448, Mapper448_Init         )
 	INES_BOARD( "22-in-1 King Series",      449, Mapper449_Init         )
 	INES_BOARD( "晶太 YY841157C",          	450, Mapper450_Init         )
+	INES_BOARD( "Impact Soft C-IM2-BASE", 	451, Mapper451_Init         )
 	INES_BOARD( "DS-9-27",                  452, Mapper452_Init         )
 	INES_BOARD( "Realtec 8042",    		453, Mapper453_Init         )
 	INES_BOARD( "110-in-1",     		454, Mapper454_Init         )
diff --git a/src/ines.h b/src/ines.h
index 1b18297..8118922 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -352,6 +352,7 @@ void Mapper447_Init(CartInfo *);
 void Mapper448_Init(CartInfo *);
 void Mapper449_Init(CartInfo *);
 void Mapper450_Init(CartInfo *);
+void Mapper451_Init(CartInfo *);
 void Mapper452_Init(CartInfo *);
 void Mapper453_Init(CartInfo *);
 void Mapper454_Init(CartInfo *);