// license:BSD-3-Clause
// copyright-holders:Tim Schuerewegen
/*
Atmel Serial DataFlash
(c) 2001-2007 Tim Schuerewegen
AT45DB041 - 528 KByte
AT45DB081 - 1056 KByte
AT45DB161 - 2112 KByte
*/
#ifndef _AT45DBXX_H_
#define _AT45DBXX_H_
#include "emu.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_AT45DB041_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, AT45DB041, 0)
#define MCFG_AT45DB081_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, AT45DB081, 0)
#define MCFG_AT45DB161_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, AT45DB161, 0)
#define MCFG_AT45DBXXX_SO_CALLBACK(_cb) \
devcb = &at45db041_device::set_so_cb(*device, DEVCB_##_cb);
// ======================> at45db041_device
class at45db041_device : public device_t,
public device_nvram_interface
{
public:
at45db041_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
at45db041_device(const machine_config &mconfig, device_type type, std::string name, std::string tag, device_t *owner, UINT32 clock, std::string shortname, std::string source);
DECLARE_WRITE_LINE_MEMBER(cs_w);
DECLARE_WRITE_LINE_MEMBER(sck_w);
DECLARE_WRITE_LINE_MEMBER(si_w);
DECLARE_READ_LINE_MEMBER(so_r);
UINT8 *get_ptr() { return &m_data[0]; }
template<class _Object> static devcb_base &set_so_cb(device_t &device, _Object object) { return downcast<at45db041_device &>(device).write_so.set_callback(object); }
devcb_write_line write_so;
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// device_nvram_interface overrides
virtual void nvram_default() override;
virtual void nvram_read(emu_file &file) override;
virtual void nvram_write(emu_file &file) override;
protected:
virtual int num_pages() const { return 2048; }
virtual int page_size() const { return 264; }
virtual UINT8 device_id() const { return 0x18; }
UINT8 read_byte();
void flash_set_io(UINT8* data, UINT32 size, UINT32 pos);
virtual UINT32 flash_get_page_addr();
virtual UINT32 flash_get_byte_addr();
void write_byte(UINT8 data);
// internal state
dynamic_buffer m_data;
UINT32 m_size;
UINT8 m_mode;
UINT8 m_status;
dynamic_buffer m_buffer1;
//dynamic_buffer m_buffer2;
UINT8 m_si_byte;
UINT8 m_si_bits;
UINT8 m_so_byte;
UINT8 m_so_bits;
struct AT45DBXX_PINS
{
int cs; // chip select
int sck; // serial clock
int si; // serial input
int so; // serial output
int wp; // write protect
int reset; // reset
int busy; // busy
} m_pin;
struct AT45DBXX_IO
{
UINT8 *data;
UINT32 size;
UINT32 pos;
} m_io;
struct AT45DBXX_CMD
{
UINT8 data[8];
UINT8 size;
} m_cmd;
};
// ======================> at45db081_device
class at45db081_device : public at45db041_device
{
public:
at45db081_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
protected:
virtual int num_pages() const override { return 4096; }
virtual int page_size() const override { return 264; }
virtual UINT8 device_id() const override { return 0x20; }
virtual UINT32 flash_get_page_addr() override;
};
// ======================> at45db161_device
class at45db161_device : public at45db041_device
{
public:
at45db161_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
protected:
virtual int num_pages() const override { return 4096; }
virtual int page_size() const override { return 528; }
virtual UINT8 device_id() const override { return 0x28; }
virtual UINT32 flash_get_page_addr() override;
virtual UINT32 flash_get_byte_addr() override;
};
// device type definition
extern const device_type AT45DB041;
extern const device_type AT45DB081;
extern const device_type AT45DB161;
#endif