// license:BSD-3-Clause // copyright-holders:smf #ifndef __CLOCK_H__ #define __CLOCK_H__ #pragma once #include "emu.h" #define MCFG_CLOCK_SIGNAL_HANDLER(_devcb) \ devcb = &clock_device::set_signal_handler(*device, DEVCB_##_devcb); class clock_device : public device_t { public: clock_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); template static devcb_base &set_signal_handler(device_t &device, _Object object) { return downcast(device).m_signal_handler.set_callback(object); } protected: virtual void device_start(); virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); virtual void device_clock_changed(); private: void update_timer(); attotime period(); int m_signal; emu_timer *m_timer; devcb_write_line m_signal_handler; }; extern const device_type CLOCK; #endif