merge mappers from FCEU-mm

[fceu.git] / boards / SA-9602B.c

/* FCE Ultra - NES/Famicom Emulator\r
 *\r
 * Copyright notice for this file:\r
 *  Copyright (C) 2012 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
\r
#include "mapinc.h"\r
#include "mmc3.h"\r
\r
static void SA9602BPW(uint32 A, uint8 V)\r
{\r
  setprg8r(EXPREGS[1],A,V&0x3F);\r
  if(MMC3_cmd&0x40)\r
    setprg8r(0,0x8000,~(1));\r
  else\r
    setprg8r(0,0xc000,~(1));\r
  setprg8r(0,0xe000,~(0));\r
}\r
\r
static DECLFW(SA9602BWrite)\r
{\r
  switch(A & 0xe001)\r
  {\r
    case 0x8000: EXPREGS[0] = V; break;\r
    case 0x8001:\r
      if((EXPREGS[0] & 7) < 6)\r
      {\r
        EXPREGS[1] = V >> 6;\r
        FixMMC3PRG(MMC3_cmd);\r
      }\r
      break;\r
  }\r
  MMC3_CMDWrite(A, V);\r
}\r
\r
static void SA9602BPower(void)\r
{\r
  EXPREGS[0]=EXPREGS[1]=0;\r
  GenMMC3Power();\r
  SetReadHandler(0x8000,0xFFFF,CartBR);\r
  SetWriteHandler(0x8000,0xBFFF,SA9602BWrite);\r
}\r
\r
void SA9602B_Init(CartInfo *info)\r
{\r
  GenMMC3_Init(info, 512, 0, 0, 0);\r
  pwrap=SA9602BPW;\r
  mmc3opts|=2;\r
  info->SaveGame[0]=UNIFchrrama;\r
  info->SaveGameLen[0]=32 * 1024;\r
  info->Power=SA9602BPower;\r
  AddExState(EXPREGS, 2, 0, "EXPR");\r
}\r