merge mappers from FCEU-mm

[fceu.git] / boards / 121.c

/* FCE Ultra - NES/Famicom Emulator\r
 *\r
 * Copyright notice for this file:\r
 *  Copyright (C) 2007-2008 Mad Dumper, 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
 * Panda prince pirate.\r
 * MK4, MK6, A9711 board\r
 * 6035052 seems to be the same too, but with prot array in reverse\r
 * A9746  seems to be the same too, check\r
 * 187 seems to be the same too, check (A98402 board)\r
 *\r
 */\r
\r
#include "mapinc.h"\r
#include "mmc3.h"\r
\r
static void Sync()\r
{\r
  switch(EXPREGS[5]&0x3F)\r
  {\r
    case 0x20: EXPREGS[7] = 1; EXPREGS[0]=EXPREGS[6]; break;\r
    case 0x29: EXPREGS[7] = 1; EXPREGS[0]=EXPREGS[6]; break;\r
    case 0x26: EXPREGS[7] = 0; EXPREGS[0]=EXPREGS[6]; break;\r
    case 0x2B: EXPREGS[7] = 1; EXPREGS[0]=EXPREGS[6]; break;\r
    case 0x2C: EXPREGS[7] = 1; if(EXPREGS[6]) EXPREGS[0]=EXPREGS[6]; break;\r
    case 0x3F: EXPREGS[7] = 1; EXPREGS[0]=EXPREGS[6]; break;\r
    case 0x28: EXPREGS[7] = 0; EXPREGS[1]=EXPREGS[6]; break;\r
    case 0x2A: EXPREGS[7] = 0; EXPREGS[2]=EXPREGS[6]; break;\r
    case 0x2F: break;\r
    default:   EXPREGS[5] = 0; break;\r
  }\r
}\r
\r
static void M121CW(uint32 A, uint8 V)\r
{\r
  if((A&0x1000)==((MMC3_cmd&0x80)<<5))\r
    setchr1(A,V|0x100);\r
  else\r
    setchr1(A,V);\r
}\r
\r
static void M121PW(uint32 A, uint8 V)\r
{\r
  if(EXPREGS[5]&0x3F)\r
  {\r
//    FCEU_printf("prot banks: %02x %02x %02x %02x\n",V,EXPREGS[2],EXPREGS[1],EXPREGS[0]);\r
    setprg8(A,V&0x3F);\r
    setprg8(0xE000,EXPREGS[0]);\r
    setprg8(0xC000,EXPREGS[1]);\r
    setprg8(0xA000,EXPREGS[2]);\r
  } \r
  else\r
  {\r
//    FCEU_printf("gen banks: %04x %02x\n",A,V);\r
    setprg8(A,V&0x3F);\r
  }\r
}\r
\r
static DECLFW(M121Write)\r
{\r
//  FCEU_printf("write: %04x:%04x\n",A&0xE003,V);\r
  switch(A&0xE003)\r
  {\r
    case 0x8000: //EXPREGS[5] = 0;\r
//                 FCEU_printf("gen: %02x\n",V);\r
                 MMC3_CMDWrite(A,V);\r
                 FixMMC3PRG(MMC3_cmd);\r
                 break;\r
    case 0x8001: EXPREGS[6] = ((V&1)<<5)|((V&2)<<3)|((V&4)<<1)|((V&8)>>1)|((V&0x10)>>3)|((V&0x20)>>5);\r
//                 FCEU_printf("bank: %02x (%02x)\n",V,EXPREGS[6]);\r
                 if(!EXPREGS[7]) Sync();\r
                 MMC3_CMDWrite(A,V);\r
                 FixMMC3PRG(MMC3_cmd);\r
                 break;\r
    case 0x8003: EXPREGS[5] = V;\r
//                 EXPREGS[7] = 0;\r
//                 FCEU_printf("prot: %02x\n",EXPREGS[5]);\r
                 Sync();\r
                 MMC3_CMDWrite(0x8000,V);\r
                 FixMMC3PRG(MMC3_cmd);\r
                 break;\r
  }\r
}\r
\r
static uint8 prot_array[16] = { 0x83, 0x83, 0x42, 0x00 };\r
static DECLFW(M121LoWrite)\r
{\r
  EXPREGS[4] = prot_array[V&3];  // 0x100 bit in address seems to be switch arrays 0, 2, 2, 3 (Contra Fighter)\r
//  FCEU_printf("write: %04x:%04x\n",A,V);\r
}\r
\r
static DECLFR(M121Read)\r
{ \r
//  FCEU_printf("read:  %04x->\n",A,EXPREGS[0]);\r
  return EXPREGS[4];\r
}\r
\r
static void M121Power(void)\r
{\r
  EXPREGS[5] = 0;\r
  GenMMC3Power();\r
  SetReadHandler(0x5000,0x5FFF,M121Read);\r
  SetWriteHandler(0x5000,0x5FFF,M121LoWrite);\r
  SetWriteHandler(0x8000,0x9FFF,M121Write);\r
}\r
\r
void Mapper121_Init(CartInfo *info)\r
{\r
  GenMMC3_Init(info, 128, 256, 8, 0);\r
  pwrap=M121PW;\r
  cwrap=M121CW;\r
  info->Power=M121Power;\r
  AddExState(EXPREGS, 8, 0, "EXPR");\r
}\r