merge mappers from FCEU-mm

[fceu.git] / boards / bmc64in1nr.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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\r
 *\r
 * BMC 42-in-1 "reset switch" type\r
 */\r
\r
#include "mapinc.h"\r
\r
static uint8 regs[4];\r
\r
static SFORMAT StateRegs[]=\r
{\r
  {regs, 4, "REGS"},\r
  {0}\r
};\r
\r
static void Sync(void)\r
{\r
  if(regs[0]&0x80)\r
  {\r
    if(regs[1]&0x80)\r
      setprg32(0x8000,regs[1]&0x1F);\r
    else\r
    {\r
      int bank=((regs[1]&0x1f)<<1)|((regs[1]>>6)&1);\r
      setprg16(0x8000,bank);\r
      setprg16(0xC000,bank);\r
    }\r
  }\r
  else\r
  {\r
    int bank=((regs[1]&0x1f)<<1)|((regs[1]>>6)&1);\r
    setprg16(0xC000,bank);\r
  }\r
  if(regs[0]&0x20)\r
    setmirror(MI_H);\r
  else\r
    setmirror(MI_V);\r
  setchr8((regs[2]<<2)|((regs[0]>>1)&3));\r
}\r
\r
static DECLFW(BMC64in1nrWriteLo)\r
{\r
  regs[A&3]=V;\r
  Sync();\r
}\r
\r
static DECLFW(BMC64in1nrWriteHi)\r
{\r
  regs[3]=V;\r
  Sync();\r
}\r
\r
static void BMC64in1nrPower(void)\r
{\r
  regs[0]=0x80;\r
  regs[1]=0x43;\r
  regs[2]=regs[3]=0;\r
  Sync();\r
  SetWriteHandler(0x5000,0x5003,BMC64in1nrWriteLo);\r
  SetWriteHandler(0x8000,0xFFFF,BMC64in1nrWriteHi);\r
  SetReadHandler(0x8000,0xFFFF,CartBR);\r
}\r
\r
static void StateRestore(int version)\r
{\r
  Sync();\r
}\r
\r
void BMC64in1nr_Init(CartInfo *info)\r
{\r
  info->Power=BMC64in1nrPower;\r
  AddExState(&StateRegs, ~0, 0, 0);\r
  GameStateRestore=StateRestore;\r
}\r
\r
\r