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path: root/src/lib/netlist/devices/nld_9316.cpp
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// license:GPL-2.0+
// copyright-holders:Couriersud
/*
 * nld_9316.c
 *
 */

#include "nld_9316.h"
#include "netlist/nl_base.h"
#include "nlid_system.h"

namespace netlist
{
	namespace devices
	{

	static constexpr const unsigned MAXCNT = 15;

	NETLIB_OBJECT(9316)
	{
		NETLIB_CONSTRUCTOR(9316)
		, m_CLK(*this, "CLK", NETLIB_DELEGATE(9316, clk))
		, m_ENT(*this, "ENT")
		, m_RC(*this, "RC")
		, m_LOADQ(*this, "LOADQ")
		, m_ENP(*this, "ENP")
		, m_CLRQ(*this, "CLRQ")
		, m_ABCD(*this, {{"A", "B", "C", "D"}}, NETLIB_DELEGATE(9316, abcd))
		, m_Q(*this, {{ "QA", "QB", "QC", "QD" }})
		, m_cnt(*this, "m_cnt", 0)
		, m_abcd(*this, "m_abcd", 0)
		, m_loadq(*this, "m_loadq", 0)
		, m_ent(*this, "m_ent", 0)
		, m_power_pins(*this)
		{
		}

	private:
		NETLIB_RESETI()
		{
			m_CLK.set_state(logic_t::STATE_INP_LH);
			m_cnt = 0;
			m_abcd = 0;
		}

		NETLIB_UPDATEI()
		{
			const auto CLRQ(m_CLRQ());
			m_ent = m_ENT();
			m_loadq = m_LOADQ();

			if (((m_loadq ^ 1) || (m_ent && m_ENP())) && CLRQ)
			{
				m_CLK.activate_lh();
			}
			else
			{
				m_CLK.inactivate();
				if (!CLRQ && (m_cnt>0))
				{
					update_outputs_all(0, NLTIME_FROM_NS(36));
					m_cnt = 0;
				}
			}
			m_RC.push(m_ent && (m_cnt == MAXCNT), NLTIME_FROM_NS(27));
		}


		NETLIB_HANDLERI(clk)
		{
			auto cnt = (m_loadq ? (m_cnt + 1) & MAXCNT: m_abcd);
			m_RC.push(m_ent && (cnt == MAXCNT), NLTIME_FROM_NS(27));
			update_outputs_all(cnt, NLTIME_FROM_NS(20));
			m_cnt = cnt;
		}

		NETLIB_HANDLERI(abcd)
		{
			m_abcd = static_cast<unsigned>((m_ABCD[0]() << 0) | (m_ABCD[1]() << 1) | (m_ABCD[2]() << 2) | (m_ABCD[3]() << 3));
		}

		logic_input_t m_CLK;
		logic_input_t m_ENT;

		logic_output_t m_RC;

		logic_input_t m_LOADQ;

		logic_input_t m_ENP;
		logic_input_t m_CLRQ;

		object_array_t<logic_input_t, 4> m_ABCD;
		object_array_t<logic_output_t, 4> m_Q;

		/* counter state */
		state_var<unsigned> m_cnt;
		/* cached pins */
		state_var<unsigned> m_abcd;
		state_var_sig m_loadq;
		state_var_sig m_ent;
		nld_power_pins m_power_pins;

		void update_outputs_all(unsigned cnt, netlist_time out_delay) noexcept
		{
			m_Q[0].push((cnt >> 0) & 1, out_delay);
			m_Q[1].push((cnt >> 1) & 1, out_delay);
			m_Q[2].push((cnt >> 2) & 1, out_delay);
			m_Q[3].push((cnt >> 3) & 1, out_delay);
		}
	};

	NETLIB_OBJECT_DERIVED(9316_dip, 9316)
	{
		NETLIB_CONSTRUCTOR_DERIVED(9316_dip, 9316)
		{
			register_subalias("1", "CLRQ");
			register_subalias("2", "CLK");
			register_subalias("3", "A");
			register_subalias("4", "B");
			register_subalias("5", "C");
			register_subalias("6", "D");
			register_subalias("7", "ENP");
			register_subalias("8", "GND");

			register_subalias("9", "LOADQ");
			register_subalias("10", "ENT");
			register_subalias("11", "QD");
			register_subalias("12", "QC");
			register_subalias("13", "QB");
			register_subalias("14", "QA");
			register_subalias("15", "RC");
			register_subalias("16", "VCC");
		}
	};


	NETLIB_DEVICE_IMPL(9316,     "TTL_9316",     "+CLK,+ENP,+ENT,+CLRQ,+LOADQ,+A,+B,+C,+D,@VCC,@GND")
	NETLIB_DEVICE_IMPL(9316_dip, "TTL_9316_DIP", "")

	} //namespace devices
} // namespace netlist