merge mappers from FCEU-mm

[fceu.git] / boards / ac-08.c

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