merge mapper code from FCEUX

[fceu.git] / boards / bmc13in1jy110.c

/* FCE Ultra - NES/Famicom Emulator\r
 *\r
 * Copyright notice for this file:\r
 *  Copyright (C) 2005 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
 * BMC 42-in-1 reset switch\r
 */\r
\r
#include "mapinc.h"\r
\r
static uint8 bank_mode;\r
static uint8 bank_value;\r
static uint8 prgb[4];\r
static SFORMAT StateRegs[]=\r
{\r
  {0}\r
};\r
\r
static void Sync(void)\r
{\r
  FCEU_printf("%02x: %02x %02x\n", bank_mode, bank_value, prgb[0]);  \r
  switch(bank_mode&7)\r
  {\r
    case 0:\r
         setprg32(0x8000,bank_value&7); break;\r
    case 1:\r
         setprg16(0x8000,((8+(bank_value&7))>>1)+prgb[1]);\r
         setprg16(0xC000,(bank_value&7)>>1);\r
    case 4:\r
         setprg32(0x8000,8+(bank_value&7)); break;\r
    case 5:\r
         setprg16(0x8000,((8+(bank_value&7))>>1)+prgb[1]);\r
         setprg16(0xC000,((8+(bank_value&7))>>1)+prgb[3]);\r
    case 2:\r
         setprg8(0x8000,prgb[0]>>2);\r
         setprg8(0xa000,prgb[1]);\r
         setprg8(0xc000,prgb[2]);\r
         setprg8(0xe000,~0);\r
         break;\r
    case 3:\r
         setprg8(0x8000,prgb[0]);\r
         setprg8(0xa000,prgb[1]);\r
         setprg8(0xc000,prgb[2]);\r
         setprg8(0xe000,prgb[3]);\r
         break;\r
  }\r
}\r
\r
static DECLFW(BMC13in1JY110Write)\r
{\r
  FCEU_printf("%04x:%04x\n",A,V);\r
  switch(A)\r
  {\r
    case 0x8000:\r
    case 0x8001:\r
    case 0x8002:\r
    case 0x8003: prgb[A&3]=V; break;\r
    case 0xD000: bank_mode=V; break;\r
    case 0xD001: setmirror(V&3);\r
    case 0xD002: break;\r
    case 0xD003: bank_value=V; break;\r
  }\r
  Sync();\r
}\r
\r
static void BMC13in1JY110Power(void)\r
{\r
  prgb[0]=prgb[1]=prgb[2]=prgb[3]=0;\r
  bank_mode=0;\r
  bank_value=0;\r
  setprg32(0x8000,0);\r
  setchr8(0);\r
  SetWriteHandler(0x8000,0xFFFF,BMC13in1JY110Write);\r
  SetReadHandler(0x8000,0xFFFF,CartBR);\r
}\r
\r
static void StateRestore(int version)\r
{\r
  Sync();\r
}\r
\r
void BMC13in1JY110_Init(CartInfo *info)\r
{\r
  info->Power=BMC13in1JY110Power;\r
  AddExState(&StateRegs, ~0, 0, 0);\r
  GameStateRestore=StateRestore;\r
}\r
\r
\r