mirror of
https://github.com/0ldsk00l/nestopia.git
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113 lines
2.8 KiB
C++
113 lines
2.8 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 "NstBoardSachenTcu.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 Sachen
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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 Tcu01::SubReset(const bool hard)
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{
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for (dword i=0x4100; i < 0x10000; i += 0x200)
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{
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for (uint j=0x2; j < 0x100; j += 0x4)
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Map( i + j, &Tcu01::Poke_4102 );
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}
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if (hard)
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prg.SwapBank<SIZE_32K,0x0000>(0);
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}
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void Tcu02::SubReset(const bool hard)
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{
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for (uint i=0x4100; i < 0x6000; i += 0x200)
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{
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for (uint j=0x0; j < 0x100; j += 0x4)
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{
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Map( i + j + 0x0, &Tcu02::Peek_4100 );
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Map( i + j + 0x2, &Tcu02::Poke_4102 );
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}
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}
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if (hard)
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reg = 0;
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}
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void Tcu02::SubLoad(State::Loader& state,const dword baseChunk)
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{
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NST_VERIFY( baseChunk == (AsciiId<'S','0','2'>::V) );
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if (baseChunk == AsciiId<'S','0','2'>::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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reg = state.Read8();
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state.End();
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}
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}
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}
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void Tcu02::SubSave(State::Saver& state) const
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{
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state.Begin( AsciiId<'S','0','2'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write8( reg ).End().End();
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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_PEEK(Tcu02,4100)
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{
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return reg | 0x40;
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}
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NES_POKE_D(Tcu01,4102)
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{
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ppu.Update();
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prg.SwapBank<SIZE_32K,0x0000>( (data >> 6 & 0x2) | (data >> 2 & 0x1) );
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chr.SwapBank<SIZE_8K,0x0000>( data >> 3 );
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}
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NES_POKE_D(Tcu02,4102)
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{
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ppu.Update();
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reg = (data & 0x30) | ((data+3) & 0x0F);
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chr.SwapBank<SIZE_8K,0x0000>( reg );
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}
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}
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}
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}
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}
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