// license:BSD-3-Clause // copyright-holders:R. Belmont /********************************************************************** Intersil/Renesas ICM7170 Real Time Clock ********************************************************************** PDIP package: _____ _____ _WR 1 | \_/ | 24 _RD ALE 2 | | 23 VDD _CS 3 | | 22 D7 A4 4 | ICM7170 | 21 D6 A3 5 | | 20 D5 A2 6 | | 19 D4 A1 7 | | 18 D3 A0 8 | | 17 D2 OSC OUT 9 | | 16 D1 OSC IN 10 | | 15 D0 INT SOURCE 11 | | 14 VBACKUP /INTERRUPT 12 |_____________| 13 VSS (GND) SOIC package: _____ _____ A1 1 | \_/ | 24 A2 A0 2 | | 23 A3 OSC OUT 3 | | 22 A4 OSC IN 4 | ICM7170 | 21 _CS INT SOURCE 5 | | 20 ALE /INTERRUPT 6 | | 19 _WR VSS 7 | | 18 _RD VBACKUP 8 | | 17 VDD D0 9 | | 16 D7 D1 10 | | 15 D6 D2 11 | | 14 D5 D3 12 |_____________| 13 D4 **********************************************************************/ #ifndef MAME_MACHINE_ICM7170_H #define MAME_MACHINE_ICM7170_H #pragma once #include "dirtc.h" class icm7170_device : public device_t, public device_rtc_interface, public device_nvram_interface { public: // construction/destruction icm7170_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock); auto irq() { return m_out_irq_cb.bind(); } uint8_t read(offs_t offset); void write(offs_t offset, uint8_t data); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // 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) override; // device_nvram_interface overrides virtual void nvram_default() override; virtual bool nvram_read(util::read_stream &file) override; virtual bool nvram_write(util::write_stream &file) override; TIMER_CALLBACK_MEMBER(clock_tick); private: void recalc_irqs(); devcb_write_line m_out_irq_cb; bool m_out_irq_state; uint8_t m_regs[0x20]; uint8_t m_irq_mask, m_irq_status; emu_timer *m_timer; }; DECLARE_DEVICE_TYPE(ICM7170, icm7170_device) #endif // MAME_MACHINE_ICM7170_H