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// license:BSD-3-Clause
// copyright-holders:smf
#ifndef MAME_MACHINE_LATCH_H
#define MAME_MACHINE_LATCH_H
#pragma once
#define MCFG_OUTPUT_LATCH_BIT0_HANDLER(_devcb) \
devcb = &downcast<output_latch_device &>(*device).set_bit_handler<0>(DEVCB_##_devcb);
#define MCFG_OUTPUT_LATCH_BIT1_HANDLER(_devcb) \
devcb = &downcast<output_latch_device &>(*device).set_bit_handler<1>(DEVCB_##_devcb);
#define MCFG_OUTPUT_LATCH_BIT2_HANDLER(_devcb) \
devcb = &downcast<output_latch_device &>(*device).set_bit_handler<2>(DEVCB_##_devcb);
#define MCFG_OUTPUT_LATCH_BIT3_HANDLER(_devcb) \
devcb = &downcast<output_latch_device &>(*device).set_bit_handler<3>(DEVCB_##_devcb);
#define MCFG_OUTPUT_LATCH_BIT4_HANDLER(_devcb) \
devcb = &downcast<output_latch_device &>(*device).set_bit_handler<4>(DEVCB_##_devcb);
#define MCFG_OUTPUT_LATCH_BIT5_HANDLER(_devcb) \
devcb = &downcast<output_latch_device &>(*device).set_bit_handler<5>(DEVCB_##_devcb);
#define MCFG_OUTPUT_LATCH_BIT6_HANDLER(_devcb) \
devcb = &downcast<output_latch_device &>(*device).set_bit_handler<6>(DEVCB_##_devcb);
#define MCFG_OUTPUT_LATCH_BIT7_HANDLER(_devcb) \
devcb = &downcast<output_latch_device &>(*device).set_bit_handler<7>(DEVCB_##_devcb);
class output_latch_device : public device_t
{
public:
output_latch_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
template <unsigned Bit, class Object> devcb_base &set_bit_handler(Object &&cb) { return m_bit_handlers[Bit].set_callback(std::forward<Object>(cb)); }
void write(uint8_t data);
DECLARE_WRITE8_MEMBER(write) { write(data); }
protected:
virtual void device_start() override;
private:
devcb_write_line m_bit_handlers[8];
int m_bits[8];
bool m_resolved;
};
DECLARE_DEVICE_TYPE(OUTPUT_LATCH, output_latch_device)
#endif // MAME_MACHINE_LATCH_H
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