mirror of
https://github.com/0ldsk00l/nestopia.git
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118 lines
2.5 KiB
C++
118 lines
2.5 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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#ifndef NST_BOARD_MMC1_H
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#define NST_BOARD_MMC1_H
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#ifdef NST_PRAGMA_ONCE
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#pragma once
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#endif
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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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class NST_NO_VTABLE Mmc1 : public Board
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{
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public:
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enum Revision
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{
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REV_A,
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REV_B1,
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REV_B2,
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REV_B3
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};
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protected:
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explicit Mmc1(const Context&,Revision=REV_B2);
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void SubReset(bool);
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void SubSave(State::Saver&) const;
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void SubLoad(State::Loader&,dword);
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void UpdatePrg();
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void UpdateWrk();
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void UpdateChr() const;
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void UpdateNmt();
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void Sync(Event,Input::Controllers*);
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enum
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{
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CTRL,
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CHR0,
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CHR1,
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PRG0
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};
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enum
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{
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CTRL_MIRRORING = 0x03,
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CTRL_PRG_SWAP_LOW = 0x04,
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CTRL_PRG_SWAP_16K = 0x08,
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CTRL_CHR_SWAP_4K = 0x10,
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CTRL_WRITE_RESET = CTRL_PRG_SWAP_LOW|CTRL_PRG_SWAP_16K,
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CTRL_HARD_RESET = CTRL_WRITE_RESET|CTRL_MIRRORING,
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PRG0_WRAM_DISABLED = 0x10
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};
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private:
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void Save(File&) const;
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void Load(File&);
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void ResetRegisters();
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virtual void NST_FASTCALL UpdateRegisters(uint);
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NES_DECL_POKE( 8000 );
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struct Serial
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{
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enum
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{
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RESET_BIT = 0x80,
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RESET_CYCLES = 2
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};
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uint buffer;
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uint shifter;
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Cycle ready;
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};
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Serial serial;
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protected:
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byte regs[4];
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const Revision revision;
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};
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}
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}
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}
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#endif
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