mirror of
https://github.com/holub/mame
synced 2025-10-05 00:38:58 +03:00
138 lines
2.6 KiB
C++
138 lines
2.6 KiB
C++
// license:GPL-2.0+
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// copyright-holders:Couriersud
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/*
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* nld_74153.c
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*
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*/
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#include "nld_74153.h"
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namespace netlist
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{
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namespace devices
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{
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/* FIXME: timing is not 100% accurate, Strobe and Select inputs have a
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* slightly longer timing.
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* Convert this to sub-devices at some time.
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*/
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NETLIB_OBJECT(74153sub)
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{
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NETLIB_CONSTRUCTOR(74153sub)
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, m_C(*this, {{"C0", "C1", "C2", "C3"}})
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, m_G(*this, "G")
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, m_Y(*this, "AY") //FIXME: Change netlists
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, m_chan(*this, "m_chan", 0)
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{
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}
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NETLIB_RESETI();
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NETLIB_UPDATEI();
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public:
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object_array_t<logic_input_t, 4> m_C;
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logic_input_t m_G;
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logic_output_t m_Y;
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state_var<unsigned> m_chan;
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};
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NETLIB_OBJECT(74153)
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{
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NETLIB_CONSTRUCTOR(74153)
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, m_sub(*this, "sub")
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, m_A(*this, "A")
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, m_B(*this, "B")
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{
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register_subalias("C0", m_sub.m_C[0]);
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register_subalias("C1", m_sub.m_C[1]);
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register_subalias("C2", m_sub.m_C[2]);
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register_subalias("C3", m_sub.m_C[3]);
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register_subalias("G", m_sub.m_G);
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register_subalias("AY", m_sub.m_Y); //FIXME: Change netlists
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}
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NETLIB_RESETI() { }
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NETLIB_UPDATEI();
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public:
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NETLIB_SUB(74153sub) m_sub;
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logic_input_t m_A;
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logic_input_t m_B;
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};
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NETLIB_OBJECT(74153_dip)
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{
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NETLIB_CONSTRUCTOR(74153_dip)
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, m_1(*this, "1")
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, m_2(*this, "2")
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, m_A(*this, "14") // m_2.m_B
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, m_B(*this, "2") // m_2.m_B
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{
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register_subalias("1", m_1.m_G);
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register_subalias("3", m_1.m_C[3]);
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register_subalias("4", m_1.m_C[2]);
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register_subalias("5", m_1.m_C[1]);
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register_subalias("6", m_1.m_C[0]);
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register_subalias("7", m_1.m_Y);
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register_subalias("9", m_2.m_Y);
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register_subalias("10", m_2.m_C[0]);
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register_subalias("11", m_2.m_C[1]);
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register_subalias("12", m_2.m_C[2]);
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register_subalias("13", m_2.m_C[3]);
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register_subalias("15", m_2.m_G);
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}
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//NETLIB_RESETI();
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NETLIB_UPDATEI();
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protected:
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NETLIB_SUB(74153sub) m_1;
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NETLIB_SUB(74153sub) m_2;
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logic_input_t m_A;
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logic_input_t m_B;
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};
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NETLIB_RESET(74153sub)
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{
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m_chan = 0;
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}
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NETLIB_UPDATE(74153sub)
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{
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const netlist_time delay[2] = { NLTIME_FROM_NS(23), NLTIME_FROM_NS(18) };
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if (!INPLOGIC(m_G))
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{
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uint_fast8_t t = INPLOGIC(m_C[m_chan]);
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OUTLOGIC(m_Y, t, delay[t] );
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}
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else
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{
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OUTLOGIC(m_Y, 0, delay[0]);
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}
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}
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NETLIB_UPDATE(74153)
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{
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m_sub.m_chan = (INPLOGIC(m_A) | (INPLOGIC(m_B)<<1));
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m_sub.do_update();
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}
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NETLIB_UPDATE(74153_dip)
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{
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m_2.m_chan = m_1.m_chan = (INPLOGIC(m_A) | (INPLOGIC(m_B)<<1));
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m_1.do_update();
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m_2.do_update();
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}
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NETLIB_DEVICE_IMPL(74153)
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NETLIB_DEVICE_IMPL(74153_dip)
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} //namespace devices
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} // namespace netlist
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