merge mapper code from FCEUX

[fceu.git] / boards / 176.c

diff --git a/boards/176.c b/boards/176.c
new file mode 100644 (file)
index 0000000..0830df8
--- /dev/null
+++ b/boards/176.c
@@ -0,0 +1,158 @@
+/* FCE Ultra - NES/Famicom Emulator\r
+ *\r
+ * Copyright notice for this file:\r
+ *  Copyright (C) 2007 CaH4e3\r
+ *  Copyright (C) 2012 FCEUX team\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
+ */\r
+\r
+#include "mapinc.h"\r
+\r
+extern uint32 ROM_size;\r
+\r
+static uint8 prg[4], chr, sbw, we_sram;\r
+static uint8 *WRAM=NULL;\r
+static uint32 WRAMSIZE;\r
+\r
+static SFORMAT StateRegs[]=\r
+{\r
+  {prg, 4, "PRG"},\r
+  {&chr, 1, "CHR"},\r
+       {&sbw, 1, "SBW"},\r
+  {0}\r
+};\r
+\r
+static void Sync(void)\r
+{\r
+  setprg8r(0x10,0x6000,0);\r
+       setprg8(0x8000,prg[0]);\r
+       setprg8(0xA000,prg[1]);\r
+       setprg8(0xC000,prg[2]);\r
+       setprg8(0xE000,prg[3]);\r
+\r
+  setchr8(chr);\r
+}\r
+\r
+static DECLFW(M176Write_5001)\r
+{ \r
+       printf("%04X = $%02X\n",A,V);\r
+       if(sbw)\r
+       {\r
+               prg[0] = V*4;\r
+               prg[1] = V*4+1;\r
+               prg[2] = V*4+2;\r
+               prg[3] = V*4+3;\r
+       }\r
+  Sync();\r
+}\r
+\r
+static DECLFW(M176Write_5010)\r
+{ \r
+       printf("%04X = $%02X\n",A,V);\r
+       if(V == 0x24) sbw = 1;\r
+  Sync();\r
+}\r
+\r
+static DECLFW(M176Write_5011)\r
+{ \r
+       printf("%04X = $%02X\n",A,V);\r
+       V >>= 1;\r
+       if(sbw)\r
+       {\r
+               prg[0] = V*4;\r
+               prg[1] = V*4+1;\r
+               prg[2] = V*4+2;\r
+               prg[3] = V*4+3;\r
+       }\r
+  Sync();\r
+}\r
+\r
+static DECLFW(M176Write_5FF1)\r
+{ \r
+       printf("%04X = $%02X\n",A,V);\r
+  V >>= 1;\r
+       prg[0] = V*4;\r
+       prg[1] = V*4+1;\r
+       prg[2] = V*4+2;\r
+       prg[3] = V*4+3;\r
+  Sync();\r
+}\r
+\r
+static DECLFW(M176Write_5FF2)\r
+{ \r
+       printf("%04X = $%02X\n",A,V);\r
+  chr = V;\r
+  Sync();\r
+}\r
+\r
+static DECLFW(M176Write_A001)\r
+{\r
+       we_sram = V & 0x03;\r
+}\r
+\r
+static DECLFW(M176Write_WriteSRAM)\r
+{\r
+//     if(we_sram)\r
+               CartBW(A,V);\r
+}\r
+\r
+static void M176Power(void)\r
+{\r
+  SetReadHandler(0x6000,0x7fff,CartBR);\r
+  SetWriteHandler(0x6000,0x7fff,M176Write_WriteSRAM);\r
+  SetReadHandler(0x8000,0xFFFF,CartBR);\r
+       SetWriteHandler(0xA001,0xA001,M176Write_A001);\r
+       SetWriteHandler(0x5001,0x5001,M176Write_5001);\r
+       SetWriteHandler(0x5010,0x5010,M176Write_5010);\r
+       SetWriteHandler(0x5011,0x5011,M176Write_5011);\r
+  SetWriteHandler(0x5ff1,0x5ff1,M176Write_5FF1);\r
+  SetWriteHandler(0x5ff2,0x5ff2,M176Write_5FF2);\r
+       \r
+       we_sram = 0;\r
+       sbw = 0;\r
+       prg[0] = 0;\r
+       prg[1] = 1;\r
+       prg[2] = (ROM_size-2)&63;\r
+       prg[3] = (ROM_size-1)&63;\r
+  Sync();\r
+}\r
+\r
+\r
+static void M176Close(void)\r
+{\r
+  if(WRAM)\r
+    FCEU_gfree(WRAM);\r
+  WRAM=NULL;\r
+}\r
+\r
+static void StateRestore(int version)\r
+{\r
+  Sync();\r
+}\r
+\r
+void Mapper176_Init(CartInfo *info)\r
+{\r
+  info->Power=M176Power;\r
+  info->Close=M176Close;\r
+\r
+  GameStateRestore=StateRestore;\r
+\r
+  WRAMSIZE=8192;\r
+  WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r
+  SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r
+  AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r
+  AddExState(&StateRegs, ~0, 0, 0);\r
+}\r