/*
	BANDAI RX-78 Emulator 'eRX-78'

	Author : Takeda.Toshiya
	Date   : 2006.08.21 -

	[ memory ]
*/

#ifndef _MEMORY_H_
#define _MEMORY_H_

#include "../vm.h"
#include "../../emu.h"
#include "../device.h"

class MEMORY : public DEVICE
{
private:
	// memory
	uint8_t ipl[0x2000];
	uint8_t cart[0x4000];
	uint8_t ram[0x4000];
	uint8_t ext[0x5000];
	uint8_t vram[0x2000 * 6];
	
	uint8_t wdmy[0x1000];
	uint8_t rdmy[0x1000];
	uint8_t* wbank[16];
	uint8_t* rbank[16];
	uint8_t* vbank[6];
	
	int rpage, wpage;
	bool inserted;
	
public:
	MEMORY(VM* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
	{
		set_device_name(_T("Memory Bus"));
	}
	~MEMORY() {}
	
	// common functions
	void initialize();
	void reset();
	void write_data8(uint32_t addr, uint32_t data);
	uint32_t read_data8(uint32_t addr);
	void write_io8(uint32_t addr, uint32_t data);
	void decl_state();
	void save_state(FILEIO* state_fio);
	bool load_state(FILEIO* state_fio);
	
	// unique functions
	void open_cart(const _TCHAR* file_path);
	void close_cart();
	bool is_cart_inserted()
	{
		return inserted;
	}
	uint8_t* get_vram() { return vram; }
};

#endif

