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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 "NstBoardBmcBallgames11in1.hpp"
namespace Nes
{
namespace Core
{
namespace Boards
{
namespace Bmc
{
#ifdef NST_MSVC_OPTIMIZE
#pragma optimize("s", on)
#endif
void Ballgames11in1::SubReset(const bool hard)
{
Map( 0x6000U, 0x7FFFU, &Ballgames11in1::Peek_6000, &Ballgames11in1::Poke_6000 );
Map( 0x8000U, 0xBFFFU, &Ballgames11in1::Poke_8000 );
Map( 0xC000U, 0xDFFFU, &Ballgames11in1::Poke_C000 );
Map( 0xE000U, 0xFFFFU, &Ballgames11in1::Poke_8000 );
if (hard)
{
bank = 0x0;
mode = 0x1;
UpdateBanks();
}
}
void Ballgames11in1::SubLoad(State::Loader& state,const dword baseChunk)
{
NST_VERIFY( baseChunk == (AsciiId<'B','B','G'>::V) );
if (baseChunk == AsciiId<'B','B','G'>::V)
{
while (const dword chunk = state.Begin())
{
if (chunk == AsciiId<'R','E','G'>::V)
{
{
const uint data = state.Read8();
mode = data & 0x3;
bank = data >> 4;
}
UpdateBanks();
}
state.End();
}
}
}
void Ballgames11in1::SubSave(State::Saver& state) const
{
state.Begin( AsciiId<'B','B','G'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write8( mode | (bank << 4) ).End().End();
}
#ifdef NST_MSVC_OPTIMIZE
#pragma optimize("", on)
#endif
void Ballgames11in1::UpdateBanks()
{
uint offset;
if (mode & 0x1)
{
prg.SwapBank<SIZE_32K,0x0000>( bank );
offset = 0x23;
}
else
{
prg.SwapBanks<SIZE_16K,0x0000>( (bank << 1) | (mode >> 1), bank << 1 | 0x7 );
offset = 0x2F;
}
wrk.SwapBank<SIZE_8K,0x0000>( offset | (bank << 2) );
ppu.SetMirroring( (mode == 0x3) ? Ppu::NMT_H : Ppu::NMT_V );
}
NES_PEEK_A(Ballgames11in1,6000)
{
return wrk[0][address - 0x6000];
}
NES_POKE_D(Ballgames11in1,6000)
{
mode = (data >> 3 & 0x2) | (data >> 1 & 0x1);
UpdateBanks();
}
NES_POKE_D(Ballgames11in1,8000)
{
bank = data & 0xF;
UpdateBanks();
}
NES_POKE_D(Ballgames11in1,C000)
{
bank = data & 0xF;
mode = (data >> 3 & 0x2) | (mode & 0x1);
UpdateBanks();
}
}
}
}
}
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