mirror of
https://github.com/0ldsk00l/nestopia.git
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116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
////////////////////////////////////////////////////////////////////////////////////////
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//
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// Nestopia - NES/Famicom emulator written in C++
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//
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// Copyright (C) 2003-2008 Martin Freij
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//
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// This file is part of Nestopia.
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//
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// Nestopia is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// Nestopia is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Nestopia; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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////////////////////////////////////////////////////////////////////////////////////////
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#include "NstBoard.hpp"
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#include "NstBoardWaixing.hpp"
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namespace Nes
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{
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namespace Core
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{
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namespace Boards
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{
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namespace Waixing
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{
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#ifdef NST_MSVC_OPTIMIZE
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#pragma optimize("s", on)
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#endif
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void Ffv::SubReset(bool)
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{
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for (uint i=0x5000; i < 0x6000; i += 0x400)
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Map( i + 0x00, i + 0x1FF, &Ffv::Poke_5000 );
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for (uint i=0; i < 2; ++i)
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regs[i] = 0;
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prg.SwapBank<SIZE_16K,0x4000>(0x1F);
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}
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void Ffv::SubSave(State::Saver& state) const
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{
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const byte data[2] = { regs[0], regs[1] };
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state.Begin( AsciiId<'W','F','V'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write( data ).End().End();
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}
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void Ffv::SubLoad(State::Loader& state,const dword baseChunk)
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{
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NST_VERIFY( baseChunk == (AsciiId<'W','F','V'>::V) );
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if (baseChunk == AsciiId<'W','F','V'>::V)
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{
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while (const dword chunk = state.Begin())
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{
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if (chunk == AsciiId<'R','E','G'>::V)
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{
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State::Loader::Data<2> data( state );
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regs[0] = data[0];
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regs[1] = data[1];
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}
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state.End();
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}
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}
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}
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#ifdef NST_MSVC_OPTIMIZE
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#pragma optimize("", on)
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#endif
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NES_POKE_AD(Ffv,5000)
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{
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address = address >> 8 & 0x1;
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if (regs[address] != data)
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{
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regs[address] = data;
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data = regs[1] << 5 & 0x20;
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switch (regs[0] & 0x70)
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{
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case 0x00:
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case 0x20:
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case 0x40:
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case 0x60:
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prg.SwapBanks<SIZE_16K,0x0000>( data | (regs[0] >> 1 & 0x10) | (regs[0] & 0xF), data | 0x1F );
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break;
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case 0x50:
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prg.SwapBank<SIZE_32K,0x0000>( (data >> 1) | (regs[0] & 0xF) );
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break;
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case 0x70:
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prg.SwapBanks<SIZE_16K,0x0000>( data | (regs[0] << 1 & 0x10) | (regs[0] & 0xF), data | 0x1F );
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break;
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}
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}
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}
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}
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}
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}
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}
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