mirror of
https://github.com/0ldsk00l/nestopia.git
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95 lines
2.2 KiB
C++
95 lines
2.2 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 "NstInpDevice.hpp"
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#include "NstInpDoremikkoKeyboard.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 Input
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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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DoremikkoKeyboard::DoremikkoKeyboard(const Cpu& c)
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: Device(c,Api::Input::DOREMIKKOKEYBOARD)
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{
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DoremikkoKeyboard::Reset();
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}
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void DoremikkoKeyboard::Reset()
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{
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reg = 0;
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mode = 0;
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part = 0;
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}
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void DoremikkoKeyboard::SaveState(State::Saver& saver,const byte id) const
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{
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saver.Begin( AsciiId<'D','K'>::R(0,0,id) ).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 DoremikkoKeyboard::Poke(const uint data)
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{
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if ((data & 0x2) > (reg & 0x2))
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{
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part = 0;
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mode = 0;
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}
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if ((data & 0x1) > (reg & 0x1))
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{
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++part;
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mode = 0;
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}
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reg = data;
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}
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uint DoremikkoKeyboard::Peek(uint port)
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{
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if (port)
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{
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port = mode;
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mode ^= 1;
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if (input)
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{
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Controllers::DoremikkoKeyboard::callback( input->doremikkoKeyboard, part, port );
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return input->doremikkoKeyboard.keys & 0x1E;
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}
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}
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return 0;
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}
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}
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}
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}
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