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diff --git a/boards/bs-5.c b/boards/bs-5.c
new file mode 100644
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--- /dev/null
+++ b/boards/bs-5.c
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+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2007 CaH4e3
+ *
+ * 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 reg_prg[4];
+static uint8 reg_chr[4];
+static uint8 dip_switch;
+
+static SFORMAT StateRegs[]=
+{
+  {reg_prg, 4, "PREGS"},
+  {reg_chr, 4, "CREGS"},
+  {0}
+};
+
+static void Sync(void)
+{
+  setprg8(0x8000,reg_prg[0]);
+  setprg8(0xa000,reg_prg[1]);
+  setprg8(0xc000,reg_prg[2]);
+  setprg8(0xe000,reg_prg[3]);
+  setchr2(0x0000,reg_chr[0]);
+  setchr2(0x0800,reg_chr[1]);
+  setchr2(0x1000,reg_chr[2]);
+  setchr2(0x1800,reg_chr[3]);
+  setmirror(MI_V);
+}
+
+static DECLFW(MBS5Write)
+{
+  int bank_sel = (A&0xC00)>>10;
+  switch (A&0xF000)
+  {
+    case 0x8000:
+         reg_chr[bank_sel]=A&0x1F;
+         break;
+    case 0xA000:
+         if(A&(1<<(dip_switch+4)))
+          reg_prg[bank_sel]=A&0x0F;
+         break;
+  }
+  Sync();
+}
+
+static void MBS5Reset(void)
+{
+  dip_switch++;
+  dip_switch&=3;
+  reg_prg[0]=reg_prg[1]=reg_prg[2]=reg_prg[3]=~0;     
+  Sync();
+}
+
+static void MBS5Power(void)
+{
+  dip_switch=0;
+  reg_prg[0]=reg_prg[1]=reg_prg[2]=reg_prg[3]=~0;     
+  Sync();
+  SetReadHandler(0x8000,0xFFFF,CartBR);
+  SetWriteHandler(0x8000,0xFFFF,MBS5Write);
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+void BMCBS5_Init(CartInfo *info)
+{
+  info->Power=MBS5Power;
+  info->Reset=MBS5Reset;
+  GameStateRestore=StateRestore;
+  AddExState(&StateRegs, ~0, 0, 0);
+}