merge mapper code from FCEUX

[fceu.git] / boards / n625092.c

diff --git a/boards/n625092.c b/boards/n625092.c
new file mode 100644 (file)
index 0000000..30d8298
--- /dev/null
+++ b/boards/n625092.c
@@ -0,0 +1,97 @@
+/* FCE Ultra - NES/Famicom Emulator\r
+ *\r
+ * Copyright notice for this file:\r
+ *  Copyright (C) 2006 CaH4e3\r
+ *\r
+ * This program is free software; you can redistribute it and/or modify\r
+ * it under the terms of the GNU General Public License as published by\r
+ * the Free Software Foundation; either version 2 of the License, or\r
+ * (at your option) any later version.\r
+ *\r
+ * This program is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License\r
+ * along with this program; if not, write to the Free Software\r
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA\r
+ * 700in1 and 400in1 carts\r
+ */\r
+ \r
+\r
+#include "mapinc.h"\r
+\r
+static uint16 cmd, bank;\r
+\r
+static SFORMAT StateRegs[]=\r
+{\r
+  {&cmd, 2, "CMD"},\r
+  {&bank, 2, "BANK"},\r
+  {0}\r
+};\r
+\r
+static void Sync(void)\r
+{\r
+  setmirror((cmd&1)^1);\r
+  setchr8(0);\r
+  if(cmd&2)\r
+  {\r
+    if(cmd&0x100)\r
+    {\r
+      setprg16(0x8000,((cmd&0xe0)>>2)|bank);\r
+      setprg16(0xC000,((cmd&0xe0)>>2)|7);  \r
+    }\r
+    else\r
+    {\r
+      setprg16(0x8000,((cmd&0xe0)>>2)|(bank&6));\r
+      setprg16(0xC000,((cmd&0xe0)>>2)|((bank&6)|1));  \r
+    }\r
+  }\r
+  else\r
+  {\r
+    setprg16(0x8000,((cmd&0xe0)>>2)|bank);\r
+    setprg16(0xC000,((cmd&0xe0)>>2)|bank);\r
+  }  \r
+}\r
+\r
+static DECLFW(UNLN625092WriteCommand)\r
+{\r
+  cmd=A;  \r
+  Sync();\r
+}\r
+\r
+static DECLFW(UNLN625092WriteBank)\r
+{ \r
+  bank=A&7;\r
+  Sync();\r
+}\r
+\r
+static void UNLN625092Power(void)\r
+{\r
+  cmd=0;\r
+  bank=0;\r
+  Sync();\r
+  SetReadHandler(0x8000,0xFFFF,CartBR);\r
+  SetWriteHandler(0x8000,0xBFFF,UNLN625092WriteCommand);\r
+  SetWriteHandler(0xC000,0xFFFF,UNLN625092WriteBank);\r
+}\r
+\r
+static void UNLN625092Reset(void)\r
+{\r
+  cmd=0;\r
+  bank=0;\r
+}\r
+\r
+static void StateRestore(int version)\r
+{\r
+  Sync();\r
+}\r
+\r
+void UNLN625092_Init(CartInfo *info)\r
+{\r
+  info->Reset=UNLN625092Reset;\r
+  info->Power=UNLN625092Power;\r
+  GameStateRestore=StateRestore;\r
+  AddExState(&StateRegs, ~0, 0, 0);\r
+}\r