fceugx/source/fceultra/boards/supervision.cpp

/* FCE Ultra - NES/Famicom Emulator
 *
 * Copyright notice for this file:
 *  Copyright (C) 2002 Xodnizel
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "mapinc.h"

static uint8 cmd0, cmd1;

static void DoSuper(void)
{
  setprg8r((cmd0&0xC)>>2,0x6000,((cmd0&0x3)<<4)|0xF);
  if(cmd0&0x10)
  {
    setprg16r((cmd0&0xC)>>2,0x8000,((cmd0&0x3)<<3)|(cmd1&7));
    setprg16r((cmd0&0xC)>>2,0xc000,((cmd0&0x3)<<3)|7);
  }
  else
    setprg32r(4,0x8000,0);
  setmirror(((cmd0&0x20)>>5)^1);
}

static DECLFW(SuperWrite)
{
  if(!(cmd0&0x10))
  {
    cmd0=V;
    DoSuper();
  }
}

static DECLFW(SuperHi)
{
  cmd1=V;
  DoSuper();
}

static void SuperReset(void)
{
  SetWriteHandler(0x6000,0x7FFF,SuperWrite);
  SetWriteHandler(0x8000,0xFFFF,SuperHi);
  SetReadHandler(0x6000,0xFFFF,CartBR);  
  cmd0=cmd1=0;
  setprg32r(4,0x8000,0);
  setchr8(0);
}

static void SuperRestore(int version)
{
  DoSuper();
}

void Supervision16_Init(CartInfo *info)
{
  AddExState(&cmd0, 1, 0,"L1");
  AddExState(&cmd1, 1, 0,"L2");
  info->Power=SuperReset;
  GameStateRestore=SuperRestore;
}