fceugx/source/fceultra/boards/ks7037.cpp

/* FCE Ultra - NES/Famicom Emulator
 *
 * Copyright notice for this file:
 *  Copyright (C) 2011 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
 *
 * FDS Conversion
 *
 */

#include "mapinc.h"

static uint8 reg[8], cmd;
static uint8 *WRAM=NULL;
static uint32 WRAMSIZE;

static void(*WSync)(void);

static SFORMAT StateRegs[]=
{
  {&cmd, 1, "CMD"},
  {reg, 8, "REGS"},
  {0}
};

static void SyncKS7037(void)
{
  setprg4r(0x10,0x6000,0);
  setprg4(0x7000,15);
  setprg8(0x8000,reg[6]);
  setprg4(0xA000,~3);
  setprg4r(0x10,0xB000,1);
  setprg8(0xC000,reg[7]);
  setprg8(0xE000,~0);
  setchr8(0);
  setmirrorw(reg[2]&1,reg[4]&1,reg[3]&1,reg[5]&1);
}

static void SyncLH10(void)
{
  setprg8(0x6000,~1);
  setprg8(0x8000,reg[6]);
  setprg8(0xA000,reg[7]);
  setprg8r(0x10,0xC000,0);
  setprg8(0xE000,~0);
  setchr8(0);
  setmirror(0);
}

static DECLFW(UNLKS7037Write)
{
  switch(A & 0xE001)
  {
    case 0x8000: cmd = V & 7; break;
    case 0x8001: reg[cmd] = V; WSync(); break;
  }
}

static void UNLKS7037Power(void)
{
  reg[0]=reg[1]=reg[2]=reg[3]=reg[4]=reg[5]=reg[6]=reg[7]=0;
  WSync();
  SetReadHandler(0x6000,0xFFFF,CartBR);
  SetWriteHandler(0x6000,0x7FFF,CartBW);
  SetWriteHandler(0x8000,0x9FFF,UNLKS7037Write);
  SetWriteHandler(0xA000,0xBFFF,CartBW);
  SetWriteHandler(0xC000,0xFFFF,UNLKS7037Write);
}

static void LH10Power(void)
{
  reg[0]=reg[1]=reg[2]=reg[3]=reg[4]=reg[5]=reg[6]=reg[7]=0;
  WSync();
  SetReadHandler(0x6000,0xFFFF,CartBR);
  SetWriteHandler(0x8000,0xBFFF,UNLKS7037Write);
  SetWriteHandler(0xC000,0xDFFF,CartBW);
  SetWriteHandler(0xE000,0xFFFF,UNLKS7037Write);
}

static void Close(void)
{
  if(WRAM)
    FCEU_gfree(WRAM);
  WRAM=NULL;
}

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

void UNLKS7037_Init(CartInfo *info)
{
  info->Power=UNLKS7037Power;
  info->Close=Close;

  WSync = SyncKS7037;

  WRAMSIZE=8192;
  WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);
  SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);
  AddExState(WRAM, WRAMSIZE, 0, "WRAM");

  GameStateRestore=StateRestore;
  AddExState(&StateRegs, ~0, 0, 0);
}

void LH10_Init(CartInfo *info)
{
  info->Power=LH10Power;
  info->Close=Close;

  WSync = SyncLH10;

  WRAMSIZE=8192;
  WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);
  SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);
  AddExState(WRAM, WRAMSIZE, 0, "WRAM");

  GameStateRestore=StateRestore;
  AddExState(&StateRegs, ~0, 0, 0);
}