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// license:BSD-3-Clause
// copyright-holders:Fabio Priuli, MetalliC
#ifndef __MD_STM95_H
#define __MD_STM95_H
#include "md_slot.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
/* ST M95320 32Kbit serial EEPROM implementation */
// TO DO: STM95 should be made a separate EEPROM device and this should be merged with md_eeprom.c!
#define M95320_SIZE 0x1000
enum STMSTATE
{
IDLE = 0,
CMD_WRSR,
CMD_RDSR,
M95320_CMD_READ,
CMD_WRITE,
READING,
WRITING
};
class stm95_eeprom_device
{
public:
stm95_eeprom_device(running_machine &machine, UINT8 *eeprom);
running_machine &machine() const { return m_machine; }
UINT8 *eeprom_data;
void set_cs_line(int);
void set_halt_line(int state) {}; // not implemented
void set_si_line(int);
void set_sck_line(int state);
int get_so_line(void);
protected:
int latch;
int reset_line;
int sck_line;
int WEL;
STMSTATE stm_state;
int stream_pos;
int stream_data;
int eeprom_addr;
running_machine& m_machine;
};
// ======================> md_eeprom_stm95_device
class md_eeprom_stm95_device : public device_t,
public device_md_cart_interface
{
public:
// construction/destruction
md_eeprom_stm95_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
md_eeprom_stm95_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// device-level overrides
virtual void device_start();
virtual void device_reset();
// reading and writing
virtual DECLARE_READ16_MEMBER(read);
virtual DECLARE_READ16_MEMBER(read_a13);
virtual DECLARE_WRITE16_MEMBER(write_a13);
private:
UINT8 m_bank[3];
int m_rdcnt;
auto_pointer<stm95_eeprom_device> m_stm95;
};
// device type definition
extern const device_type MD_EEPROM_STM95;
#endif
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