mirror of
https://github.com/0ldsk00l/nestopia.git
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125 lines
3.1 KiB
C++
125 lines
3.1 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 "NstBoardTxc.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 Txc
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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 T22211A::SubReset(const bool hard)
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{
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Map( 0x4100U, &T22211A::Peek_4100 );
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Map( 0x4100U, 0x4103U, &T22211A::Poke_4100 );
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Map( 0x8000U, 0xFFFFU, &T22211A::Poke_8000 );
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if (hard)
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{
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for (uint i=0; i < 4; ++i)
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regs[i] = 0;
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prg.SwapBank<SIZE_32K,0x0000>(0);
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}
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}
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void T22211B::SubReset(const bool hard)
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{
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T22211A::SubReset( hard );
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Map( 0x8000U, 0xFFFFU, &T22211B::Poke_8000 );
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}
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void T22211C::SubReset(const bool hard)
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{
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T22211A::SubReset( hard );
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Map( 0x4100U, &T22211C::Peek_4100 );
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}
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void T22211A::SubLoad(State::Loader& state,const dword baseChunk)
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{
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NST_VERIFY( baseChunk == (AsciiId<'T','2','1'>::V) );
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if (baseChunk == AsciiId<'T','2','1'>::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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state.Read( regs );
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state.End();
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}
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}
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}
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void T22211A::SubSave(State::Saver& state) const
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{
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state.Begin( AsciiId<'T','2','1'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write( regs ).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(T22211A,4100)
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{
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return (uint(regs[1]) ^ regs[2]) | 0x40;
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}
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NES_PEEK(T22211C,4100)
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{
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return (uint(regs[1]) ^ regs[2]) | 0x41;
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}
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NES_POKE_AD(T22211A,4100)
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{
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regs[address & 0x3] = data;
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}
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NES_POKE(T22211A,8000)
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{
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ppu.Update();
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prg.SwapBank<SIZE_32K,0x0000>( regs[2] >> 2 );
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chr.SwapBank<SIZE_8K,0x0000>( regs[2] );
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}
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NES_POKE_D(T22211B,8000)
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{
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ppu.Update();
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prg.SwapBank<SIZE_32K,0x0000>( regs[2] >> 2 );
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chr.SwapBank<SIZE_8K,0x0000>( ((data^regs[2]) >> 3 & 0x2) | ((data^regs[2]) >> 5 & 0x1) );
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}
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}
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}
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}
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}
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