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https://github.com/0ldsk00l/nestopia.git
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101 lines
2.6 KiB
C++
101 lines
2.6 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 "NstBoardMmc3.hpp"
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#include "NstBoardBmcFamily4646B.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 Bmc
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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 Family4646B::SubReset(const bool hard)
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{
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if (hard)
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exReg = 0;
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Mmc3::SubReset( hard );
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Map( 0x6001U, 0x6001U, &Family4646B::Poke_6001 );
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}
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void Family4646B::SubLoad(State::Loader& state,const dword baseChunk)
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{
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if (baseChunk == AsciiId<'B','F','K'>::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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exReg = state.Read8();
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state.End();
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}
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}
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else
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{
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Mmc3::SubLoad( state, baseChunk );
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}
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}
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void Family4646B::SubSave(State::Saver& state) const
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{
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Mmc3::SubSave( state );
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state.Begin( AsciiId<'B','F','K'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write8( exReg ).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_POKE_D(Family4646B,6001)
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{
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if (exReg != data)
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{
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exReg = data;
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Mmc3::UpdatePrg();
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Mmc3::UpdateChr();
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}
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}
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void NST_FASTCALL Family4646B::UpdatePrg(uint address,uint bank)
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{
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prg.SwapBank<SIZE_8K>( address, (exReg << 4 & 0x20) | (bank & 0x1F) );
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}
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void NST_FASTCALL Family4646B::UpdateChr(uint address,uint bank) const
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{
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chr.SwapBank<SIZE_1K>( address, (exReg << 3 & 0x100) | bank );
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}
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}
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}
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}
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}
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