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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 "NstBoardBmcGoldenGame260in1.hpp"
namespace Nes
{
namespace Core
{
namespace Boards
{
namespace Bmc
{
#ifdef NST_MSVC_OPTIMIZE
#pragma optimize("s", on)
#endif
GoldenGame260in1::GoldenGame260in1(const Context& c)
:
Board (c),
selector
(
prg.Source().Size() == SIZE_1024K ? 0 :
prg.Source().Size() == SIZE_2048K ? 1 :
prg.Source().Size() == SIZE_3072K ? 2 : 3
)
{
}
void GoldenGame260in1::SubReset(const bool hard)
{
Map( 0x8000U, 0xFFFFU, &GoldenGame260in1::Poke_8000 );
if (selector != 3)
Map( 0x8000U, 0xFFFFU, &GoldenGame260in1::Peek_8000 );
if (hard)
{
open = false;
NES_DO_POKE(8000,0x8000,0x00);
}
}
void GoldenGame260in1::SubLoad(State::Loader& state,const dword baseChunk)
{
if (selector != 3)
{
NST_VERIFY( baseChunk == (AsciiId<'B','G','G'>::V) );
if (baseChunk == AsciiId<'B','G','G'>::V)
{
while (const dword chunk = state.Begin())
{
if (chunk == AsciiId<'B','U','S'>::V)
open = state.Read8() & 0x1;
state.End();
}
}
}
}
void GoldenGame260in1::SubSave(State::Saver& state) const
{
if (selector != 3)
state.Begin( AsciiId<'B','G','G'>::V ).Begin( AsciiId<'B','U','S'>::V ).Write8( open != 0 ).End().End();
}
#ifdef NST_MSVC_OPTIMIZE
#pragma optimize("", on)
#endif
NES_POKE_A(GoldenGame260in1,8000)
{
ppu.SetMirroring
(
(address & 0x0400) ? Ppu::NMT_0 :
(address & 0x2000) ? Ppu::NMT_H :
Ppu::NMT_V
);
static const byte slots[4][4][2] =
{
{ {0x00,0}, {0x00,1}, {0x00,1}, {0x00,1} },
{ {0x00,0}, {0x00,1}, {0x20,0}, {0x00,1} },
{ {0x00,0}, {0x00,1}, {0x20,0}, {0x40,0} },
{ {0x00,0}, {0x20,0}, {0x40,0}, {0x60,0} }
};
uint bank = slots[selector][address >> 8 & 0x3][0] | (address & 0x1F);
open = slots[selector][address >> 8 & 0x3][1];
if (address & 0x800)
{
bank = (bank << 1) | (address >> 12 & 0x1);
prg.SwapBanks<SIZE_16K,0x0000>( bank, bank );
}
else
{
prg.SwapBank<SIZE_32K,0x0000>( bank );
}
}
NES_PEEK_A(GoldenGame260in1,8000)
{
return !open ? prg.Peek(address - 0x8000) : (address >> 8);
}
}
}
}
}
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