////////////////////////////////////////////////////////////////////////////////////////
//
// 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 "NstBoardCaltron.hpp"

namespace Nes
{
	namespace Core
	{
		namespace Boards
		{
			namespace Caltron
			{
				#ifdef NST_MSVC_OPTIMIZE
				#pragma optimize("s", on)
				#endif

				void Mc6in1::SubReset(const bool hard)
				{
					Map( 0x6000U, 0x67FFU, &Mc6in1::Poke_6000 );
					Map( 0x8000U, 0xFFFFU, &Mc6in1::Poke_8000 );

					if (hard)
					{
						reg = 0;
						prg.SwapBank<SIZE_32K,0x0000>(0);
					}
				}

				void Mc6in1::SubLoad(State::Loader& state,const dword baseChunk)
				{
					NST_VERIFY( baseChunk == (AsciiId<'C','6','1'>::V) );

					if (baseChunk == AsciiId<'C','6','1'>::V)
					{
						while (const dword chunk = state.Begin())
						{
							if (chunk == AsciiId<'R','E','G'>::V)
								reg = state.Read8();

							state.End();
						}
					}
				}

				void Mc6in1::SubSave(State::Saver& state) const
				{
					state.Begin( AsciiId<'C','6','1'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write8( reg ).End().End();
				}

				#ifdef NST_MSVC_OPTIMIZE
				#pragma optimize("", on)
				#endif

				NES_POKE_A(Mc6in1,6000)
				{
					reg = address & 0xFF;
					prg.SwapBank<SIZE_32K,0x0000>( address & 0x7 );
					ppu.SetMirroring( (address & 0x10) ? Ppu::NMT_H : Ppu::NMT_V );
				}

				NES_POKE_D(Mc6in1,8000)
				{
					NST_VERIFY( reg & 0x4 );

					if (reg & 0x4)
					{
						ppu.Update();
						chr.SwapBank<SIZE_8K,0x0000>( (reg >> 1 & 0xC) | (data & 0x3) );
					}
				}
			}
		}
	}
}