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/*
Copyright 2016-2021 Arisotura, Raphaël Zumer
This file is part of melonDS.
melonDS 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 3 of the License, or (at your option)
any later version.
melonDS 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 melonDS. If not, see http://www.gnu.org/licenses/.
*/
#ifndef GBACART_H
#define GBACART_H
#include "types.h"
#include "Savestate.h"
namespace GBACart
{
// CartCommon -- base code shared by all cart types
class CartCommon
{
public:
CartCommon();
virtual ~CartCommon();
virtual void DoSavestate(Savestate* file);
virtual void LoadSave(const char* path, u32 type);
virtual void RelocateSave(const char* path, bool write);
virtual int SetInput(int num, bool pressed);
virtual u16 ROMRead(u32 addr);
virtual void ROMWrite(u32 addr, u16 val);
virtual u8 SRAMRead(u32 addr);
virtual void SRAMWrite(u32 addr, u8 val);
};
// CartGame -- regular retail game cart (ROM, SRAM)
class CartGame : public CartCommon
{
public:
CartGame(u8* rom, u32 len);
virtual ~CartGame() override;
virtual void DoSavestate(Savestate* file) override;
virtual void LoadSave(const char* path, u32 type) override;
virtual void RelocateSave(const char* path, bool write) override;
virtual u16 ROMRead(u32 addr) override;
virtual void ROMWrite(u32 addr, u16 val) override;
virtual u8 SRAMRead(u32 addr) override;
virtual void SRAMWrite(u32 addr, u8 val) override;
protected:
virtual void ProcessGPIO();
u8 SRAMRead_EEPROM(u32 addr);
void SRAMWrite_EEPROM(u32 addr, u8 val);
u8 SRAMRead_FLASH(u32 addr);
void SRAMWrite_FLASH(u32 addr, u8 val);
u8 SRAMRead_SRAM(u32 addr);
void SRAMWrite_SRAM(u32 addr, u8 val);
u8* ROM;
u32 ROMLength;
struct
{
u16 data;
u16 direction;
u16 control;
} GPIO;
enum SaveType
{
S_NULL,
S_EEPROM4K,
S_EEPROM64K,
S_SRAM256K,
S_FLASH512K,
S_FLASH1M
};
// from DeSmuME
struct
{
u8 state;
u8 cmd;
u8 device;
u8 manufacturer;
u8 bank;
} SRAMFlashState;
u8* SRAM;
FILE* SRAMFile;
u32 SRAMLength;
SaveType SRAMType;
char SRAMPath[1024];
};
// CartGameSolarSensor -- Boktai game cart
class CartGameSolarSensor : public CartGame
{
public:
CartGameSolarSensor(u8* rom, u32 len);
virtual ~CartGameSolarSensor() override;
virtual void DoSavestate(Savestate* file) override;
virtual int SetInput(int num, bool pressed) override;
private:
virtual void ProcessGPIO() override;
static const int kLuxLevels[11];
bool LightEdge;
u8 LightCounter;
u8 LightSample;
u8 LightLevel;
};
// possible inputs for GBA carts that might accept user input
enum
{
Input_SolarSensorDown = 0,
Input_SolarSensorUp,
};
extern bool CartInserted;
extern u8* CartROM;
extern u32 CartROMSize;
extern u32 CartCRC;
bool Init();
void DeInit();
void Reset();
void Eject();
void DoSavestate(Savestate* file);
bool LoadROM(const char* path, const char* sram);
bool LoadROM(const u8* romdata, u32 filelength, const char *sram);
void RelocateSave(const char* path, bool write);
// TODO: make more flexible, support nonbinary inputs
int SetInput(int num, bool pressed);
void SetOpenBusDecay(u16 val);
u16 ROMRead(u32 addr);
void ROMWrite(u32 addr, u16 val);
u8 SRAMRead(u32 addr);
void SRAMWrite(u32 addr, u8 val);
}
#endif // GBACART_H
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