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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/*
* nld_am2847.cpp
*
*/
#include "nld_am2847.h"
namespace netlist
{
namespace devices
{
NETLIB_OBJECT(Am2847_shifter)
{
NETLIB_CONSTRUCTOR(Am2847_shifter)
, m_RC(*this, "RC")
, m_IN(*this, "IN")
, m_buffer(*this, "m_buffer", 0)
, m_OUT(*this, "OUT")
{
}
public:
void shift();
logic_input_t m_RC;
logic_input_t m_IN;
state_var<uint_fast16_t[5]> m_buffer;
logic_output_t m_OUT;
};
NETLIB_OBJECT(AM2847)
{
NETLIB_CONSTRUCTOR(AM2847)
, m_A(*this, "A")
, m_B(*this, "B")
, m_C(*this, "C")
, m_D(*this, "D")
, m_CP(*this, "CP")
, m_last_CP(*this, "m_last_CP", 0)
{
register_subalias("OUTA", m_A.m_OUT);
register_subalias("OUTB", m_B.m_OUT);
register_subalias("OUTC", m_C.m_OUT);
register_subalias("OUTD", m_D.m_OUT);
register_subalias("INA", m_A.m_IN);
register_subalias("INB", m_B.m_IN);
register_subalias("INC", m_C.m_IN);
register_subalias("IND", m_D.m_IN);
register_subalias("RCA", m_A.m_RC);
register_subalias("RCB", m_B.m_RC);
register_subalias("RCC", m_C.m_RC);
register_subalias("RCD", m_D.m_RC);
}
NETLIB_RESETI();
NETLIB_UPDATEI();
protected:
NETLIB_SUB(Am2847_shifter) m_A;
NETLIB_SUB(Am2847_shifter) m_B;
NETLIB_SUB(Am2847_shifter) m_C;
NETLIB_SUB(Am2847_shifter) m_D;
logic_input_t m_CP;
state_var<uint_fast32_t> m_last_CP;
};
NETLIB_OBJECT_DERIVED(AM2847_dip, AM2847)
{
NETLIB_CONSTRUCTOR_DERIVED(AM2847_dip, AM2847)
{
register_subalias("1", m_A.m_OUT);
register_subalias("2", m_A.m_RC);
register_subalias("3", m_A.m_IN);
register_subalias("4", m_B.m_OUT);
register_subalias("5", m_B.m_RC);
register_subalias("6", m_B.m_IN);
register_subalias("7", m_C.m_OUT);
register_subalias("9", m_C.m_RC);
register_subalias("10", m_C.m_IN);
register_subalias("11", m_CP);
register_subalias("13", m_D.m_OUT);
register_subalias("14", m_D.m_RC);
register_subalias("15", m_D.m_IN);
}
};
NETLIB_RESET(AM2847)
{
m_last_CP = 0;
}
NETLIB_UPDATE(AM2847)
{
if (m_last_CP && !m_CP())
{
m_A.shift();
m_B.shift();
m_C.shift();
m_D.shift();
}
m_last_CP = m_CP();
}
inline NETLIB_FUNC_VOID(Am2847_shifter, shift, (void))
{
unsigned out = m_buffer[0] & 1;
uint_fast32_t in = (m_RC() ? out : m_IN());
for (std::size_t i=0; i < 5; i++)
{
uint_fast16_t shift_in = (i == 4) ? in : m_buffer[i + 1];
m_buffer[i] >>= 1;
m_buffer[i] |= shift_in << 15;
}
m_OUT.push(out, NLTIME_FROM_NS(200));
}
NETLIB_DEVICE_IMPL(AM2847)
NETLIB_DEVICE_IMPL(AM2847_dip)
} //namespace devices
} // namespace netlist
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