//////////////////////////////////////////////////////////////////////////////////////// // // Nestopia - NES/Famicom emulator written in C++ // // Copyright (C) 2003-2008 Martin Freij // // This file is part of Nestopia. // // Nestopia is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 2 of the License, or // (at your option) any later version. // // Nestopia is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Nestopia; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // //////////////////////////////////////////////////////////////////////////////////////// #include "NstBoard.hpp" #include "NstBoardWaixing.hpp" namespace Nes { namespace Core { namespace Boards { namespace Waixing { #ifdef NST_MSVC_OPTIMIZE #pragma optimize("s", on) #endif void Security::SubReset(const bool hard) { if (hard) exReg = 0; Mmc3::SubReset( hard ); Map( 0x5000U, &Security::Poke_5000 ); } void Security::SubLoad(State::Loader& state,const dword baseChunk) { if (baseChunk == AsciiId<'W','S','C'>::V) { while (const dword chunk = state.Begin()) { if (chunk == AsciiId<'R','E','G'>::V) exReg = state.Read8() & 0x2; state.End(); } } else { Mmc3::SubLoad( state, baseChunk ); } } void Security::SubSave(State::Saver& state) const { Mmc3::SubSave( state ); state.Begin( AsciiId<'R','E','G'>::V ).Write8( exReg ).End(); } #ifdef NST_MSVC_OPTIMIZE #pragma optimize("", on) #endif NES_POKE_D(Security,5000) { data &= 0x2; if (exReg != data) { exReg = data; Mmc3::UpdatePrg(); Mmc3::UpdateChr(); } } void Security::UpdatePrg(uint address,uint bank) { prg.SwapBank ( address, !exReg ? bank : ( (bank << 0 & 0x01) | (bank >> 3 & 0x02) | (bank >> 1 & 0x04) | (bank << 2 & 0x18) ) ); } void Security::UpdateChr(uint address,uint bank) const { chr.SwapBank ( address, !exReg ? bank : ( (bank >> 0 & 0x03) | (bank >> 1 & 0x04) | (bank >> 4 & 0x08) | (bank >> 2 & 0x10) | (bank << 3 & 0x20) | (bank << 2 & 0x40) | (bank << 2 & 0x80) ) ); } } } } }