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121 lines
3 KiB
C++
121 lines
3 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 "NstBoardAveD1012.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 Ave
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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 D1012::SubReset(const bool hard)
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{
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Map( 0xFF80U, 0xFF9FU, &D1012::Peek_FF80, &D1012::Poke_FF80 );
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Map( 0xFFE8U, 0xFFF7U, &D1012::Peek_FFE8, &D1012::Poke_FFE8 );
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if (hard)
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{
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regs[0] = 0;
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regs[1] = 0;
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Update();
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}
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}
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void D1012::SubLoad(State::Loader& state,const dword baseChunk)
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{
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if (baseChunk == AsciiId<'A','D','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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{
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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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void D1012::SubSave(State::Saver& state) const
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{
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state.Begin( AsciiId<'A','D','1'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write16( regs[0] | uint(regs[1]) << 8 ).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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void D1012::Update()
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{
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prg.SwapBank<SIZE_32K,0x0000>( (regs[0] & 0xE) | (regs[regs[0] >> 6 & 0x1] & 0x1) );
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chr.SwapBank<SIZE_8K,0x0000>( (regs[0] << 2 & ((regs[0] >> 4 & 0x4) ^ 0x3C)) | (regs[1] >> 4 & ((regs[0] >> 4 & 0x4) | 0x3)) );
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}
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NES_POKE_D(D1012,FF80)
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{
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if (!(regs[0] & 0x3F))
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{
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regs[0] = data;
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ppu.SetMirroring( (data & 0x80) ? Ppu::NMT_H : Ppu::NMT_V );
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Update();
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}
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}
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NES_PEEK_A(D1012,FF80)
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{
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const uint data = prg[3][address - 0xE000];
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NES_DO_POKE(FF80,address,data);
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return data;
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}
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NES_POKE_D(D1012,FFE8)
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{
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regs[1] = data;
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ppu.Update();
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Update();
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}
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NES_PEEK_A(D1012,FFE8)
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{
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const uint data = prg[3][address - 0xE000];
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NES_DO_POKE(FFE8,address,data);
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return data;
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}
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}
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}
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}
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}
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