/* FCE Ultra - NES/Famicom Emulator
 *
 * Copyright notice for this file:
 *  Copyright (C) 2012 CaH4e3
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "mapinc.h"

static uint8 regs[8];

static SFORMAT StateRegs[]=
{
  {regs, 8, "REGS"},
  {0}
};

static void Sync(void)
{
  setprg8(0x8000,regs[0]);
  setprg8(0xA000,regs[2]);
  setprg8(0xC000,regs[4]);
  setprg8(0xE000,~0);
  setchr4(0x0000,regs[6]);
  setchr4(0x1000,regs[7]);
}

static DECLFW(M151Write)
{
  regs[(A >> 12)&7] = V;
  Sync();
}

static void M151Power(void)
{
  Sync();
  SetReadHandler(0x8000,0xFFFF,CartBR);
  SetWriteHandler(0x8000,0xFFFF,M151Write);
}

static void StateRestore(int version)
{
  Sync();
}

void Mapper151_Init(CartInfo *info)
{
  info->Power=M151Power;
  GameStateRestore=StateRestore;
  AddExState(&StateRegs, ~0, 0, 0);
}