/* 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) // ======================> at45db041_device class at45db041_device : public device_t, public device_nvram_interface { public: at45db041_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); at45db041_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); 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; } protected: // device-level overrides virtual void device_start(); virtual void device_reset(); // device_nvram_interface overrides virtual void nvram_default(); virtual void nvram_read(emu_file &file); virtual void nvram_write(emu_file &file); 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 UINT8 * m_data; UINT32 m_size; UINT8 m_mode; UINT8 m_status; UINT8 * m_buffer1; //UINT8 * 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, const char *tag, device_t *owner, UINT32 clock); protected: virtual int num_pages() const { return 4096; } virtual int page_size() const { return 264; } virtual UINT8 device_id() const { return 0x20; } virtual UINT32 flash_get_page_addr(); }; // ======================> at45db161_device class at45db161_device : public at45db041_device { public: at45db161_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); protected: virtual int num_pages() const { return 4096; } virtual int page_size() const { return 528; } virtual UINT8 device_id() const { return 0x28; } virtual UINT32 flash_get_page_addr(); virtual UINT32 flash_get_byte_addr(); }; // device type definition extern const device_type AT45DB041; extern const device_type AT45DB081; extern const device_type AT45DB161; #endif