/********************************************************************** OKI MSM58321RS Real Time Clock/Calendar emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. ********************************************************************** _____ _____ CS2 1 |* \_/ | 16 Vdd WRITE 2 | | 15 XT READ 3 | | 14 _XT D0 4 | MSM58321 | 13 CS1 D1 5 | RTC58321 | 12 TEST D2 6 | | 11 STOP D3 7 | | 10 _BUSY GND 8 |_____________| 9 ADDRESS WRITE **********************************************************************/ #pragma once #ifndef __MSM58321__ #define __MSM58321__ #include "emu.h" //************************************************************************** // INTERFACE CONFIGURATION MACROS //************************************************************************** #define MCFG_MSM58321_ADD(_tag, _clock, _config) \ MCFG_DEVICE_ADD(_tag, MSM58321, _clock) \ MCFG_DEVICE_CONFIG(_config) #define MSM58321_INTERFACE(name) \ const msm58321_interface (name) = //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> msm58321_interface struct msm58321_interface { devcb_write_line m_out_busy_cb; }; // ======================> msm58321_device class msm58321_device : public device_t, public device_rtc_interface, public msm58321_interface { public: // construction/destruction msm58321_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); DECLARE_READ8_MEMBER( read ); DECLARE_WRITE8_MEMBER( write ); DECLARE_WRITE_LINE_MEMBER( cs1_w ); DECLARE_WRITE_LINE_MEMBER( cs2_w ); DECLARE_WRITE_LINE_MEMBER( read_w ); DECLARE_WRITE_LINE_MEMBER( write_w ); DECLARE_WRITE_LINE_MEMBER( address_write_w ); DECLARE_WRITE_LINE_MEMBER( stop_w ); DECLARE_WRITE_LINE_MEMBER( test_w ); DECLARE_READ_LINE_MEMBER( busy_r ); protected: // device-level overrides virtual void device_config_complete(); virtual void device_start(); virtual void device_reset(); virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); // device_rtc_interface overrides virtual void rtc_clock_updated(int year, int month, int day, int day_of_week, int hour, int minute, int second); private: static const device_timer_id TIMER_CLOCK = 0; static const device_timer_id TIMER_BUSY = 1; inline int read_counter(int counter); inline void write_counter(int counter, int value); devcb_resolved_write_line m_out_busy_func; int m_cs1; // chip select 1 int m_cs2; // chip select 2 int m_busy; // busy flag int m_read; // read data int m_write; // write data int m_address_write; // write address UINT8 m_reg[13]; // registers UINT8 m_latch; // data latch (not present in real chip) UINT8 m_address; // address latch // timers emu_timer *m_clock_timer; emu_timer *m_busy_timer; }; // device type definition extern const device_type MSM58321; #endif