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// 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<clock_device &>(*device).set_signal_handler(DEVCB_##_devcb);
class clock_device : public device_t
{
public:
template <class Object> devcb_base &set_signal_handler(Object &&cb) { return m_signal_handler.set_callback(std::forward<Object>(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
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