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diff --git a/boards/175.c b/boards/175.c
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+++ b/boards/175.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, delay, mirr;
+
+static SFORMAT StateRegs[]=
+{
+  {&reg, 1, "REG"},
+  {&mirr, 1, "MIRR"},
+  {0}
+};
+
+static void Sync(void)
+{
+  setchr8(reg);
+  if(!delay)
+  {
+  setprg16(0x8000,reg);
+  setprg8(0xC000,reg << 1);
+  }
+  setprg8(0xE000,(reg << 1) + 1);
+  setmirror(((mirr&4)>>2)^1);
+}
+
+static DECLFW(M175Write1)
+{
+  mirr = V;
+  delay = 1;
+  Sync();
+}
+
+static DECLFW(M175Write2)
+{
+  reg = V & 0x0F;
+  delay = 1;
+  Sync();
+}
+
+static DECLFR(M175Read)
+{
+  if(A==0xFFFC)
+  {
+    delay = 0;
+    Sync();
+  }
+  return CartBR(A);
+}
+
+static void M175Power(void)
+{
+  reg = mirr = delay = 0;
+  SetReadHandler(0x8000,0xFFFF,M175Read);
+  SetWriteHandler(0x8000,0x8000,M175Write1);
+  SetWriteHandler(0xA000,0xA000,M175Write2);
+  Sync();     
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+void Mapper175_Init(CartInfo *info)
+{
+  info->Power=M175Power;
+  GameStateRestore=StateRestore;
+
+  AddExState(&StateRegs, ~0, 0, 0);
+}