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diff --git a/boards/ac-08.c b/boards/ac-08.c
new file mode 100644
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--- /dev/null
+++ b/boards/ac-08.c
@@ -0,0 +1,77 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2011 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * FDS Conversion
+ *
+ */
+
+#include "mapinc.h"
+
+static uint8 reg, mirr;
+
+static SFORMAT StateRegs[]=
+{
+  {&reg, 1, "REG"},
+  {&mirr, 1, "MIRR"},
+  {0}
+};
+
+static void Sync(void)
+{
+  setprg8(0x6000, reg);
+  setprg32r(1, 0x8000, 0);
+  setchr8(0);
+  setmirror(mirr);
+}
+
+static DECLFW(AC08Mirr)
+{
+  mirr = ((V&8)>>3)^1;
+  Sync();
+}
+
+static DECLFW(AC08Write)
+{
+  if(A == 0x8001)              // Green Berret bank switching is only 100x xxxx xxxx xxx1 mask
+   reg = (V >> 1) & 0xf;
+  else
+   reg = V & 0xf;              // Sad But True, 2-in-1 mapper, Green Berret need value shifted left one byte, Castlevania doesn't
+  Sync();
+}
+
+static void AC08Power(void)
+{
+  reg = 0;
+  Sync();
+  SetReadHandler(0x6000,0xFFFF,CartBR);
+  SetWriteHandler(0x4025,0x4025,AC08Mirr);
+  SetWriteHandler(0x8000,0xFFFF,AC08Write);
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+void AC08_Init(CartInfo *info)
+{
+  info->Power=AC08Power;
+  GameStateRestore=StateRestore;
+  AddExState(&StateRegs, ~0, 0, 0);
+}