merge mapper code from FCEUX

[fceu.git] / boards / bmc42in1r.c

diff --git a/boards/bmc42in1r.c b/boards/bmc42in1r.c
index 8084847..bcbdfc1 100644 (file)
--- a/boards/bmc42in1r.c
+++ b/boards/bmc42in1r.c
@@ -1,87 +1,76 @@
-/* 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
- *
- * BMC 42-in-1 reset switch
- */
-
-#include "mapinc.h"
-
-static uint8 hrd_sw;
-static uint8 latche;
-static SFORMAT StateRegs[]=
-{
-  {&latche, 1, "LATCHE"},
-  {&hrd_sw, 1, "HRDSW"},
-  {0}
-};
-
-static void Sync(void)
-{
-  if(!(latche&0x20))
-    setprg32r(hrd_sw,0x8000,(latche>>1)&0x0f);
-  else
-  {
-    setprg16r(hrd_sw,0x8000,latche&0x1f);
-    setprg16r(hrd_sw,0xC000,latche&0x1f);
-  }
-  switch((latche>>6)&3)
-  {
-    case 0: setmirrorw(0,0,0,1); break;
-    case 1: setmirror(MI_V); break;
-    case 2: setmirror(MI_H); break;
-    case 3: setmirror(MI_1); break;
-  }
-}
-
-static DECLFW(BMC42in1rWrite)
-{
-  latche=V;
-  Sync();
-}
-
-static void BMC42in1rReset(void)
-{
-  hrd_sw^=1;
-  Sync();
-}
-
-static void BMC42in1rPower(void)
-{
-  latche=0x00;
-  hrd_sw=0;
-  setchr8(0);
-  Sync();
-  SetWriteHandler(0x8000,0xFFFF,BMC42in1rWrite);
-  SetReadHandler(0x8000,0xFFFF,CartBR);
-}
-
-static void StateRestore(int version)
-{
-  Sync();
-}
-
-void BMC42in1r_Init(CartInfo *info)
-{
-  info->Power=BMC42in1rPower;
-  info->Reset=BMC42in1rReset;
-  AddExState(&StateRegs, ~0, 0, 0);
-  GameStateRestore=StateRestore;
-}
-
-
+/* FCE Ultra - NES/Famicom Emulator\r
+ *\r
+ * Copyright notice for this file:\r
+ *  Copyright (C) 2005 CaH4e3\r
+ *  Copyright (C) 2009 qeed\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
+ * BMC 42-in-1\r
+ * it seems now, mapper not reset-based,\r
+ * tested on real hardware and it does menus switch by pressing just Select, not Reset\r
+ * new registers behaviour proven this too\r
+ *\r
+ */\r
+\r
+#include "mapinc.h"\r
+\r
+static uint8 latche[2];\r
+static SFORMAT StateRegs[]=\r
+{\r
+  {&latche, sizeof(latche), "LATCHE"},\r
+  {0}\r
+};\r
+\r
+static void Sync(void)\r
+{\r
+  uint8 bank = (latche[0]&0x1f)|((latche[0]&0x80)>>2)|((latche[1]&1))<<6;\r
+  if(!(latche[0] & 0x20))\r
+      setprg32(0x8000,bank >> 1);\r
+  else\r
+  {\r
+      setprg16(0x8000,bank);\r
+      setprg16(0xC000,bank);\r
+  }\r
+  setmirror((latche[0]>>6)&1);\r
+  setchr8(0);\r
+}\r
+\r
+static DECLFW(M226Write)\r
+{\r
+    latche[A & 1] = V;\r
+    Sync();\r
+}\r
+\r
+static void M226Power(void)\r
+{\r
+  latche[0] = latche[1] = 0;\r
+  Sync();\r
+  SetWriteHandler(0x8000,0xFFFF,M226Write);\r
+  SetReadHandler(0x8000,0xFFFF,CartBR);\r
+}\r
+\r
+static void StateRestore(int version)\r
+{\r
+  Sync();\r
+}\r
+\r
+void Mapper226_Init(CartInfo *info)\r
+{\r
+  info->Power=M226Power;\r
+  AddExState(&StateRegs, ~0, 0, 0);\r
+  GameStateRestore=StateRestore;\r
+}\r
+\r