//////////////////////////////////////////////////////////////////////////////////////// // // 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 "NstBoardMmc3.hpp" #include "NstBoardKay.hpp" namespace Nes { namespace Core { namespace Boards { namespace Kay { #ifdef NST_MSVC_OPTIMIZE #pragma optimize("s", on) #endif void H2288::SubReset(const bool hard) { if (hard) { exRegs[0] = 0; exRegs[1] = 0; } Mmc3::SubReset( hard ); Map( 0x5000U, 0x57FFU, &H2288::Peek_5000 ); Map( 0x5800U, 0x5FFFU, &H2288::Peek_5000, &H2288::Poke_5800 ); for (uint i=0x8000; i < 0x9000; i += 0x2) Map( i, &H2288::Poke_8000 ); } void H2288::SubLoad(State::Loader& state,const dword baseChunk) { if (baseChunk == AsciiId<'K','H','2'>::V) { while (const dword chunk = state.Begin()) { if (chunk == AsciiId<'R','E','G'>::V) { State::Loader::Data<2> data( state ); exRegs[0] = data[0]; exRegs[1] = data[1]; } state.End(); } } else { Mmc3::SubLoad( state, baseChunk ); } } void H2288::SubSave(State::Saver& state) const { Mmc3::SubSave( state ); const byte data[2] = { exRegs[0], exRegs[1] }; state.Begin( AsciiId<'K','H','2'>::V ).Begin( AsciiId<'R','E','G'>::V ).Write( data ).End().End(); } #ifdef NST_MSVC_OPTIMIZE #pragma optimize("", on) #endif void NST_FASTCALL H2288::UpdatePrg(uint address,uint bank) { if (!(exRegs[0] & 0x40)) Mmc3::UpdatePrg( address, bank ); } NES_PEEK_A(H2288,5000) { return (address >> 8 & 0xFE) | (((~address & 0x1) & (address >> 8 & 0x1)) ^ 0x1); } NES_POKE_AD(H2288,5800) { address &= 0x1; if (exRegs[address] != data) { exRegs[address] = data; if (exRegs[0] & 0x40) { data = (exRegs[0] & 0x5) | (exRegs[0] >> 2 & 0x2) | (exRegs[0] >> 2 & 0x8); address = exRegs[0] >> 1 & 0x1; prg.SwapBanks( data & ~address, data | address ); } else { Mmc3::UpdatePrg(); } } } NES_POKE_AD(H2288,8000) { static const byte security[8] = {0,3,1,5,6,7,2,4}; Mmc3::NES_DO_POKE(8000,address,(data & 0xC0) | security[data & 0x07]); } } } } }