// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Ricoh RP5C01(A) Real Time Clock With Internal RAM emulation ********************************************************************** _____ _____ _CS 1 |* \_/ | 18 Vcc CS 2 | | 17 OSCOUT ADJ 3 | | 16 OSCIN A0 4 | RP5C01 | 15 _ALARM A1 5 | RP5C01A | 14 D3 A2 6 | RF5C01A | 13 D2 A3 7 | TC8521 | 12 D1 _RD 8 | | 11 D0 GND 9 |_____________| 10 _WR **********************************************************************/ #ifndef MAME_MACHINE_RP5C01_H #define MAME_MACHINE_RP5C01_H #pragma once #include "dirtc.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> rp5c01_device class rp5c01_device : public device_t, public device_rtc_interface, public device_nvram_interface { public: // construction/destruction rp5c01_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); auto out_alarm_callback() { return m_out_alarm_cb.bind(); } void remove_battery() { m_battery_backed = false; } DECLARE_READ8_MEMBER( read ); DECLARE_WRITE8_MEMBER( write ); DECLARE_READ_LINE_MEMBER( alarm_r ) { return m_alarm; } DECLARE_WRITE_LINE_MEMBER( adj_w ) { if (state) adjust_seconds(); } protected: // construction/destruction rp5c01_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); // device-level overrides virtual void device_start() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; // device_rtc_interface overrides virtual bool rtc_feature_leap_year() const override { return true; } virtual bool rtc_battery_backed() const override { return m_battery_backed; } virtual void rtc_clock_updated(int year, int month, int day, int day_of_week, int hour, int minute, int second) 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; private: inline void set_alarm_line(); inline int read_counter(int counter); inline void write_counter(int counter, int value); inline void check_alarm(); static const device_timer_id TIMER_CLOCK = 0; static const device_timer_id TIMER_16HZ = 1; devcb_write_line m_out_alarm_cb; bool m_battery_backed; uint8_t m_reg[2][13]; // clock registers uint8_t m_ram[13]; // RAM uint8_t m_mode; // mode register uint8_t m_reset; // reset register int m_alarm; // alarm output int m_alarm_on; // alarm condition int m_1hz; // 1 Hz condition int m_16hz; // 16 Hz condition // timers emu_timer *m_clock_timer; emu_timer *m_16hz_timer; }; // ======================> tc8521_device class tc8521_device : public rp5c01_device { public: // construction/destruction tc8521_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); }; // device type definition DECLARE_DEVICE_TYPE(RP5C01, rp5c01_device) DECLARE_DEVICE_TYPE(TC8521, tc8521_device) #endif // MAME_MACHINE_RP5C01_H