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// license:GPL-2.0+
// copyright-holders:Couriersud
/*
* nld_7493.cpp
*
*/
#include "nld_7493.h"
#include "netlist/nl_base.h"
#include "nlid_system.h"
namespace netlist
{
namespace devices
{
static constexpr const netlist_time out_delay = NLTIME_FROM_NS(18);
static constexpr const netlist_time out_delay2 = NLTIME_FROM_NS(36);
static constexpr const netlist_time out_delay3 = NLTIME_FROM_NS(54);
NETLIB_OBJECT(7493)
{
NETLIB_CONSTRUCTOR(7493)
, m_R1(*this, "R1")
, m_R2(*this, "R2")
, m_a(*this, "_m_a", 0)
, m_bcd(*this, "_m_b", 0)
, m_CLKA(*this, "CLKA", NETLIB_DELEGATE(7493, updA))
, m_CLKB(*this, "CLKB", NETLIB_DELEGATE(7493, updB))
, m_QA(*this, "QA")
, m_QB(*this, "QB")
, m_QC(*this, "QC")
, m_QD(*this, "QD")
, m_power_pins(*this)
{
}
private:
NETLIB_RESETI()
{
m_a = m_bcd = 0;
m_CLKA.set_state(logic_t::STATE_INP_HL);
m_CLKB.set_state(logic_t::STATE_INP_HL);
}
NETLIB_UPDATEI()
{
if (!(m_R1() & m_R2()))
{
m_CLKA.activate_hl();
m_CLKB.activate_hl();
}
else
{
m_CLKA.inactivate();
m_CLKB.inactivate();
m_QA.push(0, NLTIME_FROM_NS(40));
m_QB.push(0, NLTIME_FROM_NS(40));
m_QC.push(0, NLTIME_FROM_NS(40));
m_QD.push(0, NLTIME_FROM_NS(40));
m_a = m_bcd = 0;
}
}
NETLIB_HANDLERI(updA)
{
m_a ^= 1;
m_QA.push(m_a, out_delay);
}
NETLIB_HANDLERI(updB)
{
auto cnt = (++m_bcd &= 0x07);
m_QD.push((cnt >> 2) & 1, out_delay3);
m_QC.push((cnt >> 1) & 1, out_delay2);
m_QB.push(cnt & 1, out_delay);
}
logic_input_t m_R1;
logic_input_t m_R2;
state_var_sig m_a;
state_var_u8 m_bcd;
logic_input_t m_CLKA;
logic_input_t m_CLKB;
logic_output_t m_QA;
logic_output_t m_QB;
logic_output_t m_QC;
logic_output_t m_QD;
nld_power_pins m_power_pins;
};
NETLIB_OBJECT_DERIVED(7493_dip, 7493)
{
NETLIB_CONSTRUCTOR_DERIVED(7493_dip, 7493)
{
register_subalias("1", "CLKB");
register_subalias("2", "R1");
register_subalias("3", "R2");
// register_subalias("4", ); --> NC
register_subalias("5", "VCC");
// register_subalias("6", ); --> NC
// register_subalias("7", ); --> NC
register_subalias("8", "QC");
register_subalias("9", "QB");
register_subalias("10", "GND");
register_subalias("11", "QD");
register_subalias("12", "QA");
// register_subalias("13", ); -. NC
register_subalias("14", "CLKA");
}
};
NETLIB_DEVICE_IMPL(7493, "TTL_7493", "+CLKA,+CLKB,+R1,+R2,@VCC,@GND")
NETLIB_DEVICE_IMPL(7493_dip, "TTL_7493_DIP", "")
} //namespace devices
} // namespace netlist
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