mappers updated to 0.98.16

[fceu.git] / boards / 57.c

diff --git a/boards/57.c b/boards/57.c
new file mode 100644 (file)
index 0000000..693677d
--- /dev/null
+++ b/boards/57.c
@@ -0,0 +1,93 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2005 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
+ *
+ */
+
+#include "mapinc.h"
+
+static uint8 prg_reg;
+static uint8 chr_reg;
+static uint8 hrd_flag;
+
+static SFORMAT StateRegs[]=
+{
+  {&prg_reg, 1, "PRG"},
+  {&chr_reg, 1, "CHR"},
+  {0}
+};
+
+static void Sync(void)
+{
+  if(prg_reg&0x80)
+    setprg32(0x8000,prg_reg>>6);
+  else
+  {
+    setprg16(0x8000,(prg_reg>>5)&3);
+    setprg16(0xC000,(prg_reg>>5)&3);
+  }
+  setmirror((prg_reg&8)>>3);
+  setchr8((chr_reg&3)|(prg_reg&7)|((prg_reg&0x10)>>1));
+}
+
+static DECLFR(M57Read)
+{
+  return hrd_flag;
+}
+
+static DECLFW(M57Write)
+{
+  if((A&0x8800)==0x8800)
+    prg_reg=V;
+  else
+    chr_reg=V;
+  Sync();
+}
+
+static void M57Power(void)
+{
+  prg_reg=0;
+  chr_reg=0;
+  hrd_flag=0;
+  SetReadHandler(0x8000,0xFFFF,CartBR);
+  SetWriteHandler(0x8000,0xFFFF,M57Write);
+  SetReadHandler(0x6000,0x6000,M57Read);
+  Sync();
+}
+
+static void M57Reset()
+{
+  if(hrd_flag==3)
+    hrd_flag=0;
+  else
+    hrd_flag++;
+  FCEU_printf("Select Register = %02x\n",hrd_flag);
+}
+
+static void StateRestore(int version)
+{
+  Sync();
+}
+
+void Mapper57_Init(CartInfo *info)
+{
+  info->Power=M57Power;
+  info->Reset=M57Reset;
+  GameStateRestore=StateRestore;
+  AddExState(&StateRegs, ~0, 0, 0);
+}