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Diffstat (limited to 'src/devices/machine/clock.h')
-rw-r--r-- | src/devices/machine/clock.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/devices/machine/clock.h b/src/devices/machine/clock.h new file mode 100644 index 00000000000..9f3712327aa --- /dev/null +++ b/src/devices/machine/clock.h @@ -0,0 +1,37 @@ +// 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<class _Object> static devcb_base &set_signal_handler(device_t &device, _Object object) { return downcast<clock_device &>(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 |