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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 "NstBoardAveD1012.hpp"
namespace Nes
{
namespace Core
{
namespace Boards
{
namespace Ave
{
#ifdef NST_MSVC_OPTIMIZE
#pragma optimize("s", on)
#endif
void D1012::SubReset(const bool hard)
{
Map( 0xFF80U, 0xFF9FU, &D1012::Peek_FF80, &D1012::Poke_FF80 );
Map( 0xFFE8U, 0xFFF7U, &D1012::Peek_FFE8, &D1012::Poke_FFE8 );
if (hard)
{
regs[0] = 0;
regs[1] = 0;
Update();
}
}
void D1012::SubLoad(State::Loader& state,const dword baseChunk)
{
if (baseChunk == AsciiId<'A','D','1'>::V)
{
while (const dword chunk = state.Begin())
{
if (chunk == AsciiId<'R','E','G'>::V)
{
State::Loader::Data<2> data( state );
regs[0] = data[0];
regs[1] = data[1];
}
state.End();
}
}
}
void D1012::SubSave(State::Saver& state) const
{
state.Begin( AsciiId<'A','D','1'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write16( regs[0] | uint(regs[1]) << 8 ).End().End();
}
#ifdef NST_MSVC_OPTIMIZE
#pragma optimize("", on)
#endif
void D1012::Update()
{
prg.SwapBank<SIZE_32K,0x0000>( (regs[0] & 0xE) | (regs[regs[0] >> 6 & 0x1] & 0x1) );
chr.SwapBank<SIZE_8K,0x0000>( (regs[0] << 2 & ((regs[0] >> 4 & 0x4) ^ 0x3C)) | (regs[1] >> 4 & ((regs[0] >> 4 & 0x4) | 0x3)) );
}
NES_POKE_D(D1012,FF80)
{
if (!(regs[0] & 0x3F))
{
regs[0] = data;
ppu.SetMirroring( (data & 0x80) ? Ppu::NMT_H : Ppu::NMT_V );
Update();
}
}
NES_PEEK_A(D1012,FF80)
{
const uint data = prg[3][address - 0xE000];
NES_DO_POKE(FF80,address,data);
return data;
}
NES_POKE_D(D1012,FFE8)
{
regs[1] = data;
ppu.Update();
Update();
}
NES_PEEK_A(D1012,FFE8)
{
const uint data = prg[3][address - 0xE000];
NES_DO_POKE(FFE8,address,data);
return data;
}
}
}
}
}
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