// license:BSD-3-Clause // copyright-holders:smf #ifndef MAME_MACHINE_CLOCK_H #define MAME_MACHINE_CLOCK_H #pragma once #define MCFG_CLOCK_ADD(_tag, _clock) \ MCFG_DEVICE_ADD(_tag, CLOCK, _clock) #define MCFG_CLOCK_SIGNAL_HANDLER(_devcb) \ downcast(*device).set_signal_handler(DEVCB_##_devcb); class clock_device : public device_t { public: template devcb_base &set_signal_handler(Object &&cb) { return m_signal_handler.set_callback(std::forward(cb)); } auto signal_handler() { return m_signal_handler.bind(); } clock_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); protected: virtual void device_start() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; virtual void device_clock_changed() override; private: void update_timer(); attotime period(); int m_signal; emu_timer *m_timer; devcb_write_line m_signal_handler; }; DECLARE_DEVICE_TYPE(CLOCK, clock_device) #endif // MAME_MACHINE_CLOCK_H