merge mapper code from FCEUX

[fceu.git] / boards / 830118C.c

/* FCE Ultra - NES/Famicom Emulator\r
 *\r
 * Copyright notice for this file:\r
 *  Copyright (C) 2008 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
 */\r
\r
// M-022 MMC3 based 830118C T-106 4M + 4M\r
\r
#include "mapinc.h"\r
#include "mmc3.h"\r
\r
static uint8 reset_flag = 0;\r
\r
static void BMC830118CCW(uint32 A, uint8 V)\r
{\r
    setchr1(A,(V&0x7F)|((EXPREGS[0]&0x0c)<<5));\r
}\r
\r
static void BMC830118CPW(uint32 A, uint8 V)\r
{\r
      if((EXPREGS[0]&0x0C)==0x0C) \r
      {  \r
         if(A==0x8000)\r
         {\r
           setprg8(A,(V&0x0F)|((EXPREGS[0]&0x0c)<<2));\r
           setprg8(0xC000,(V&0x0F)|0x32);\r
         }\r
         else if(A==0xA000)\r
         {\r
           setprg8(A,(V&0x0F)|((EXPREGS[0]&0x0c)<<2));\r
           setprg8(0xE000,(V&0x0F)|0x32);\r
         }\r
      }\r
      else\r
      {\r
         setprg8(A,(V&0x0F)|((EXPREGS[0]&0x0c)<<2));\r
      }\r
}\r
\r
static DECLFW(BMC830118CLoWrite)\r
{\r
  EXPREGS[0] = V;\r
  FixMMC3PRG(MMC3_cmd);\r
  FixMMC3CHR(MMC3_cmd);\r
}\r
\r
static void BMC830118CReset(void)\r
{\r
  EXPREGS[0]=0;\r
  MMC3RegReset();\r
}\r
\r
static void BMC830118CPower(void)\r
{\r
  EXPREGS[0] = 0;\r
  GenMMC3Power();\r
  SetWriteHandler(0x6800,0x68FF,BMC830118CLoWrite);\r
}\r
\r
void BMC830118C_Init(CartInfo *info)\r
{\r
  GenMMC3_Init(info, 128, 128, 8, 0);\r
  pwrap=BMC830118CPW;\r
  cwrap=BMC830118CCW;\r
  info->Power=BMC830118CPower;\r
  info->Reset=BMC830118CReset;\r
  AddExState(EXPREGS, 1, 0, "EXPR");\r
}\r