cartridge.h

/***************************************************************************
 *   Copyright (C) 2007-2010 by Sindre Aamås                               *
 *   [email protected]                                                    *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License version 2 as     *
 *   published by the Free Software Foundation.                            *
 *                                                                         *
 *   This program 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 version 2 for more details.                *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   version 2 along with this program; if not, write to the               *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#ifndef CARTRIDGE_H
#define CARTRIDGE_H

#include "memptrs.h"
#include "rtc.h"
#include "savestate.h"
#include <memory>
#include <string>
#include <vector>
#include "newstate.h"

namespace gambatte {

	//DOOM
//enum eAddressMappingType
//{
//	eAddressMappingType_ROM,
//	eAddressMappingType_RAM
//};
//
//struct AddressMapping
//{
//	int32_t address;
//	eAddressMappingType type;
//};

class Mbc {
public:
	virtual ~Mbc() {}
	virtual void romWrite(unsigned P, unsigned data) = 0;
	virtual void loadState(const SaveState::Mem &ss) = 0;
	virtual bool isAddressWithinAreaRombankCanBeMappedTo(unsigned address, unsigned rombank) const = 0;
	//virtual void mapAddress(AddressMapping* mapping, unsigned address) const = 0; //DOOM

	template<bool isReader>void SyncState(NewState *ns)
	{
		// can't have virtual templates, so..
		SyncState(ns, isReader);
	}
	virtual void SyncState(NewState *ns, bool isReader) = 0;
};

class Cartridge {
	MemPtrs memptrs;
	Rtc rtc;
	std::auto_ptr<Mbc> mbc;
	
public:
	void setStatePtrs(SaveState &);
	void loadState(const SaveState &);
	
	bool loaded() const { return mbc.get(); }
	
	const unsigned char * rmem(unsigned area) const { return memptrs.rmem(area); }
	unsigned char * wmem(unsigned area) const { return memptrs.wmem(area); }
	unsigned char * vramdata() const { return memptrs.vramdata(); }
	unsigned char * romdata(unsigned area) const { return memptrs.romdata(area); }
	unsigned char * wramdata(unsigned area) const { return memptrs.wramdata(area); }
	const unsigned char * rdisabledRam() const { return memptrs.rdisabledRam(); }
	const unsigned char * rsrambankptr() const { return memptrs.rsrambankptr(); }
	unsigned char * wsrambankptr() const { return memptrs.wsrambankptr(); }
	unsigned char * vrambankptr() const { return memptrs.vrambankptr(); }
	OamDmaSrc oamDmaSrc() const { return memptrs.oamDmaSrc(); }
	
	void setVrambank(unsigned bank) { memptrs.setVrambank(bank); }
	void setWrambank(unsigned bank) { memptrs.setWrambank(bank); }
	void setOamDmaSrc(OamDmaSrc oamDmaSrc) { memptrs.setOamDmaSrc(oamDmaSrc); }
	
	void mbcWrite(unsigned addr, unsigned data) { mbc->romWrite(addr, data); }

	bool isCgb() const { return gambatte::isCgb(memptrs); }
	
	void rtcWrite(unsigned data) { rtc.write(data); }
	unsigned char rtcRead() const { return *rtc.getActive(); }
	
	void loadSavedata(const char *data);
	int saveSavedataLength();
	void saveSavedata(char *dest);

	bool getMemoryArea(int which, unsigned char **data, int *length) const;

	int loadROM(const char *romfiledata, unsigned romfilelength, bool forceDmg, bool multicartCompat);
	const char * romTitle() const { return reinterpret_cast<const char *>(memptrs.romdata() + 0x134); }

	void setRTCCallback(std::uint32_t (*callback)()) {
		rtc.setRTCCallback(callback);
	}

	template<bool isReader>void SyncState(NewState *ns);
};

}

#endif