diff --git a/src/boards/463.c b/src/boards/463.c
new file mode 100644
index 0000000..3c70244
--- /dev/null
+++ b/src/boards/463.c
@@ -0,0 +1,77 @@
+/* FCEUmm - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2022
+ *
+ * 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 regs[4]          = { 0 };
+static uint8 dipswitch        = 0;
+
+static SFORMAT StateRegs[] = {
+   { regs,       4, "EXPR" },
+   { &dipswitch, 1, "DPSW" },
+   { 0 }
+};
+
+static void Mapper463_Sync(void)
+{
+   if (regs[0] &4)
+   {
+      setprg16(0x8000, regs[1]);
+      setprg16(0xC000, regs[1]);
+   }
+   else
+   {
+      setprg32(0x8000, regs[1] >>1);
+   }
+   setchr8(regs[2]);
+   setmirror(regs[0] &1? MI_H: MI_V);
+}
+
+static DECLFW(Mapper463_Write5000)
+{
+   if (A &(0x10 << dipswitch))
+   {
+      regs[A &3] =V;
+      Mapper463_Sync();
+   }
+}
+
+static void Mapper463_Reset(void)
+{
+   dipswitch =(dipswitch +1) &7;
+   regs[0] =regs[1] =regs[2] =regs[3] =0;
+   Mapper463_Sync();
+}
+
+static void Mapper463_Power(void)
+{
+   dipswitch =0;
+   regs[0] =regs[1] =regs[2] =regs[3] =0;
+   Mapper463_Sync();
+   SetWriteHandler(0x5000, 0x5FFF, Mapper463_Write5000);
+   SetReadHandler(0x6000, 0xFFFF, CartBR);
+}
+
+void Mapper463_Init(CartInfo *info)
+{
+   info->Power       = Mapper463_Power;
+   info->Reset       = Mapper463_Reset;
+   AddExState(StateRegs, ~0, 0, 0);
+}
\ No newline at end of file
diff --git a/src/ines.c b/src/ines.c
index 2fb19e3..aee8aad 100644
--- a/src/ines.c
+++ b/src/ines.c
@@ -820,6 +820,7 @@ INES_BOARD_BEGIN()
 	INES_BOARD( "NC-7000M/NC-8000M",        444, Mapper444_Init         )
 	INES_BOARD( "DS-9-27",                  452, Mapper452_Init         )
 	INES_BOARD( "K6C3001A",                 456, Mapper456_Init         )
+	INES_BOARD( "YH810X1",                 	463, Mapper463_Init         )
 	INES_BOARD( "47-2",                 	467, Mapper467_Init         )
 	INES_BOARD( "SA-9602B",                 513, SA9602B_Init           )
 	INES_BOARD( "Brilliant Com Cocoma Pack", 516, Mapper516_Init        )
diff --git a/src/ines.h b/src/ines.h
index 4d0a91b..6da5dd1 100644
--- a/src/ines.h
+++ b/src/ines.h
@@ -328,6 +328,7 @@ void Mapper443_Init(CartInfo *);
 void Mapper444_Init(CartInfo *);
 void Mapper452_Init(CartInfo *);
 void Mapper456_Init(CartInfo *);
+void Mapper463_Init(CartInfo *);
 void Mapper467_Init(CartInfo *);
 void Mapper516_Init(CartInfo *);
 void Mapper523_Init(CartInfo *);