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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 "NstBoardMmc3.hpp"
#include "NstBoardKay.hpp"
namespace Nes
{
namespace Core
{
namespace Boards
{
namespace Kay
{
#ifdef NST_MSVC_OPTIMIZE
#pragma optimize("s", on)
#endif
void PandaPrince::SubReset(const bool hard)
{
exRegs[0] = 0;
exRegs[1] = 0;
exRegs[2] = 0;
Mmc3::SubReset( hard );
Map( 0x5000U, 0x5FFFU, &PandaPrince::Peek_5000, &PandaPrince::Poke_5000 );
Map( 0x8000U, 0x9FFFU, &PandaPrince::Poke_8000 );
}
void PandaPrince::SubLoad(State::Loader& state,const dword baseChunk)
{
if (baseChunk == AsciiId<'K','P','P'>::V)
{
while (const dword chunk = state.Begin())
{
if (chunk == AsciiId<'R','E','G'>::V)
{
State::Loader::Data<3> data( state );
exRegs[0] = data[0];
exRegs[1] = data[1];
exRegs[2] = data[2];
}
state.End();
}
}
else
{
Mmc3::SubLoad( state, baseChunk );
}
}
void PandaPrince::SubSave(State::Saver& state) const
{
Mmc3::SubSave( state );
const byte data[] =
{
exRegs[0], exRegs[1], exRegs[2]
};
state.Begin( AsciiId<'K','P','P'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write( data ).End().End();
}
#ifdef NST_MSVC_OPTIMIZE
#pragma optimize("", on)
#endif
void NST_FASTCALL PandaPrince::UpdatePrg(uint address,uint bank)
{
if (address == 0x4000)
{
if (exRegs[0])
bank = exRegs[0];
}
else if (address == 0x6000)
{
if (exRegs[1])
bank = exRegs[1];
}
prg.SwapBank<SIZE_8K>( address, bank );
}
NES_PEEK(PandaPrince,5000)
{
return exRegs[2];
}
NES_POKE_D(PandaPrince,5000)
{
static const byte lut[] =
{
0x00, 0x83, 0x42, 0x00
};
exRegs[2] = lut[data & 0x3];
}
NES_POKE_AD(PandaPrince,8000)
{
if ((address & 0x3) == 0x3)
{
switch (data)
{
case 0x28: exRegs[0] = 0x0C; break;
case 0x26: exRegs[1] = 0x08; break;
case 0xAB: exRegs[1] = 0x07; break;
case 0xEC: exRegs[1] = 0x0D; break;
case 0xEF: exRegs[1] = 0x0D; break;
case 0xFF: exRegs[1] = 0x09; break;
case 0x20: exRegs[1] = 0x13; break;
case 0x29: exRegs[1] = 0x1B; break;
default: exRegs[0] = 0x0; exRegs[1] = 0x0; break;
}
}
else if (address & 0x1)
{
Mmc3::NES_DO_POKE(8001,address,data);
}
else
{
Mmc3::NES_DO_POKE(8000,address,data);
}
Mmc3::UpdatePrg();
}
}
}
}
}
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