nestopia/source/core/board/NstBoardCaltron.cpp
2012-09-02 13:13:55 -04:00

97 lines
2.5 KiB
C++

////////////////////////////////////////////////////////////////////////////////////////
//
// 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) );
}
}
}
}
}
}