text: ////////////////////////////////////////////////////////////////////////////////////////
  //
  // Nestopia - NES/Famicom emulator written in C++
  //
  // Copyright (C) 2003-2008 Martin Freij
  //
  // This file is part of Nestopia.
  //
  // Nestopia 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.
  //
  // Nestopia 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 Nestopia; if not, write to the Free Software
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  //
  ////////////////////////////////////////////////////////////////////////////////////////
  
  #include "NstBoard.hpp"
  #include "NstBoardMmc3.hpp"
  #include "NstBoardGouder.hpp"
  
  namespace Nes
  {
  	namespace Core
  	{
  		namespace Boards
  		{
  			namespace Gouder
  			{
  				#ifdef NST_MSVC_OPTIMIZE
  				#pragma optimize("s", on)
  				#endif
  
  				void G37017::SubReset(const bool hard)
  				{
  					if (hard)
  					{
  						regs.select = 0;
  
  						for (uint i=0; i < 4; ++i)
  							regs.buffer[i] = 0;
  					}
  
  					Mmc3::SubReset( hard );
  
  					Map( 0x4800U, 0x4FFFU, &G37017::Poke_4800 );
  					Map( 0x5000U, 0x57FFU, &G37017::Poke_5000 );
  					Map( 0x5800U, 0x5FFFU, &G37017::Peek_5800, &G37017::Poke_5800 );
  				}
  
  				void G37017::SubLoad(State::Loader& state,const dword baseChunk)
  				{
  					if (baseChunk == AsciiId<'G','D','R'>::V)
  					{
  						while (const dword chunk = state.Begin())
  						{
  							if (chunk == AsciiId<'R','E','G'>::V)
  							{
  								state.Read( regs.buffer );
  								regs.select = state.Read8();
  							}
  
  							state.End();
  						}
  					}
  				}
  
  				void G37017::SubSave(State::Saver& state) const
  				{
  					state.Begin( AsciiId<'G','D','R'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write( regs.buffer ).Write8( regs.select ).End().End();
  				}
  
  				#ifdef NST_MSVC_OPTIMIZE
  				#pragma optimize("", on)
  				#endif
  
  				void NST_FASTCALL G37017::UpdatePrg(uint,uint)
  				{
  					// controlled by $4800..$4FFF
  				}
  
  				NES_POKE_D(G37017,4800)
  				{
  					prg.SwapBank<SIZE_32K,0x0000>( (data & 0x1) | (data >> 3 & 0x2) );
  				}
  
  				NES_POKE_D(G37017,5000)
  				{
  					regs.select = data;
  				}
  
  				NES_POKE_AD(G37017,5800)
  				{
  					static const byte lut[256] =
  					{
  						0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x49,0x19,0x09,0x59,0x49,0x19,0x09,
  						0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x51,0x41,0x11,0x01,0x51,0x41,0x11,0x01,
  						0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x49,0x19,0x09,0x59,0x49,0x19,0x09,
  						0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x51,0x41,0x11,0x01,0x51,0x41,0x11,0x01,
  						0x00,0x10,0x40,0x50,0x00,0x10,0x40,0x50,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  						0x08,0x18,0x48,0x58,0x08,0x18,0x48,0x58,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  						0x00,0x10,0x40,0x50,0x00,0x10,0x40,0x50,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  						0x08,0x18,0x48,0x58,0x08,0x18,0x48,0x58,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  						0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x58,0x48,0x18,0x08,0x58,0x48,0x18,0x08,
  						0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x50,0x40,0x10,0x00,0x50,0x40,0x10,0x00,
  						0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x58,0x48,0x18,0x08,0x58,0x48,0x18,0x08,
  						0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x59,0x50,0x40,0x10,0x00,0x50,0x40,0x10,0x00,
  						0x01,0x11,0x41,0x51,0x01,0x11,0x41,0x51,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  						0x09,0x19,0x49,0x59,0x09,0x19,0x49,0x59,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  						0x01,0x11,0x41,0x51,0x01,0x11,0x41,0x51,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  						0x09,0x19,0x49,0x59,0x09,0x19,0x49,0x59,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
  					};
  
  					regs.buffer[address & 0x3] = data ^ lut[regs.select];
  				}
  
  				NES_PEEK_A(G37017,5800)
  				{
  					return regs.buffer[address & 0x3];
  				}
  			}
  		}
  	}
  }
  