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////////////////////////////////////////////////////////////////////////////////////////
//
// 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 "NstBoardSachenTcu.hpp"
namespace Nes
{
namespace Core
{
namespace Boards
{
namespace Sachen
{
#ifdef NST_MSVC_OPTIMIZE
#pragma optimize("s", on)
#endif
void Tcu01::SubReset(const bool hard)
{
for (dword i=0x4100; i < 0x10000; i += 0x200)
{
for (uint j=0x2; j < 0x100; j += 0x4)
Map( i + j, &Tcu01::Poke_4102 );
}
if (hard)
prg.SwapBank<SIZE_32K,0x0000>(0);
}
void Tcu02::SubReset(const bool hard)
{
for (uint i=0x4100; i < 0x6000; i += 0x200)
{
for (uint j=0x0; j < 0x100; j += 0x4)
{
Map( i + j + 0x0, &Tcu02::Peek_4100 );
Map( i + j + 0x2, &Tcu02::Poke_4102 );
}
}
if (hard)
reg = 0;
}
void Tcu02::SubLoad(State::Loader& state,const dword baseChunk)
{
NST_VERIFY( baseChunk == (AsciiId<'S','0','2'>::V) );
if (baseChunk == AsciiId<'S','0','2'>::V)
{
while (const dword chunk = state.Begin())
{
if (chunk == AsciiId<'R','E','G'>::V)
reg = state.Read8();
state.End();
}
}
}
void Tcu02::SubSave(State::Saver& state) const
{
state.Begin( AsciiId<'S','0','2'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write8( reg ).End().End();
}
#ifdef NST_MSVC_OPTIMIZE
#pragma optimize("", on)
#endif
NES_PEEK(Tcu02,4100)
{
return reg | 0x40;
}
NES_POKE_D(Tcu01,4102)
{
ppu.Update();
prg.SwapBank<SIZE_32K,0x0000>( (data >> 6 & 0x2) | (data >> 2 & 0x1) );
chr.SwapBank<SIZE_8K,0x0000>( data >> 3 );
}
NES_POKE_D(Tcu02,4102)
{
ppu.Update();
reg = (data & 0x30) | ((data+3) & 0x0F);
chr.SwapBank<SIZE_8K,0x0000>( reg );
}
}
}
}
}
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