diff options
Diffstat (limited to 'src/lib/netlist/devices/nld_74174.cpp')
-rw-r--r-- | src/lib/netlist/devices/nld_74174.cpp | 155 |
1 files changed, 68 insertions, 87 deletions
diff --git a/src/lib/netlist/devices/nld_74174.cpp b/src/lib/netlist/devices/nld_74174.cpp index bb6ecc1510b..2789eef0bb5 100644 --- a/src/lib/netlist/devices/nld_74174.cpp +++ b/src/lib/netlist/devices/nld_74174.cpp @@ -1,122 +1,103 @@ -// license:GPL-2.0+ +// license:BSD-3-Clause // copyright-holders:Couriersud /* * nld_74174.cpp * + * DM74174: Hex D Flip-Flops with Clear + * + * +--------------+ + * CLR |1 ++ 16| VCC + * Q1 |2 15| Q6 + * D1 |3 14| D6 + * D2 |4 74174 13| D5 + * Q2 |5 12| Q5 + * D3 |6 11| D4 + * Q3 |7 10| Q4 + * GND |8 9| CLK + * +--------------+ + * + * +-----+-----+---++---+-----+ + * | CLR | CLK | D || Q | QQ | + * +=====+=====+===++===+=====+ + * | 0 | X | X || 0 | 1 | + * | 1 | R | 1 || 1 | 0 | + * | 1 | R | 0 || 0 | 1 | + * | 1 | 0 | X || Q0| Q0Q | + * +-----+-----+---++---+-----+ + * + * Q0 The output logic level of Q before the indicated input conditions were established + * + * R: 0 -> 1 + * + * Naming conventions follow National Semiconductor datasheet + * */ -#include "nld_74174.h" -#include "netlist/nl_base.h" -#include "nlid_system.h" +#include "nl_base.h" + +namespace netlist::devices { -namespace netlist -{ -namespace devices -{ NETLIB_OBJECT(74174) { NETLIB_CONSTRUCTOR(74174) - , m_CLK(*this, "CLK", NETLIB_DELEGATE(74174, sub)) - , m_Q(*this, {{"Q1", "Q2", "Q3", "Q4", "Q5", "Q6"}}) + , m_CLK(*this, "CLK", NETLIB_DELEGATE(clk)) + , m_Q(*this, 1, "Q{}") , m_clrq(*this, "m_clr", 0) , m_data(*this, "m_data", 0) - , m_D(*this, {{"D1", "D2", "D3", "D4", "D5", "D6"}}) - , m_CLRQ(*this, "CLRQ") + , m_D(*this, 1, "D{}", NETLIB_DELEGATE(other)) + , m_CLRQ(*this, "CLRQ", NETLIB_DELEGATE(clrq)) , m_power_pins(*this) { } - NETLIB_RESETI(); - NETLIB_UPDATEI(); + NETLIB_RESETI() + { + m_CLK.set_state(logic_t::STATE_INP_LH); + m_clrq = 0; + m_data = 0xFF; + } + + private: + NETLIB_HANDLERI(clrq) + { + m_clrq = m_CLRQ(); + if (!m_clrq) + { + m_data = 0; + m_Q.push(m_data, NLTIME_FROM_NS(40)); + m_CLK.inactivate(); + } + else + m_CLK.activate_lh(); + } + + NETLIB_HANDLERI(other) + { + m_data = m_D(); + if (m_clrq) + m_CLK.activate_lh(); + } - NETLIB_HANDLERI(sub) + NETLIB_HANDLERI(clk) { if (m_clrq) { - for (std::size_t i=0; i<6; i++) - { - netlist_sig_t d = (m_data >> i) & 1; - m_Q[i].push(d, NLTIME_FROM_NS(25)); - } + m_Q.push(m_data, NLTIME_FROM_NS(25)); m_CLK.inactivate(); } } - protected: logic_input_t m_CLK; object_array_t<logic_output_t, 6> m_Q; state_var<netlist_sig_t> m_clrq; - state_var<unsigned> m_data; + state_var<netlist_sig_t> m_data; object_array_t<logic_input_t, 6> m_D; logic_input_t m_CLRQ; nld_power_pins m_power_pins; }; - NETLIB_OBJECT_DERIVED(74174_dip, 74174) - { - NETLIB_CONSTRUCTOR_DERIVED(74174_dip, 74174) - { - register_subalias("1", m_CLRQ); - register_subalias("9", m_CLK); - - register_subalias("3", m_D[0]); - register_subalias("2", m_Q[0]); - - register_subalias("4", m_D[1]); - register_subalias("5", m_Q[1]); - - register_subalias("6", m_D[2]); - register_subalias("7", m_Q[2]); - - register_subalias("11", m_D[3]); - register_subalias("10", m_Q[3]); - - register_subalias("13", m_D[4]); - register_subalias("12", m_Q[4]); - - register_subalias("14", m_D[5]); - register_subalias("15", m_Q[5]); - - register_subalias("8", "GND"); - register_subalias("16", "VCC"); - - } - }; - - NETLIB_UPDATE(74174) - { - uint_fast8_t d = 0; - for (std::size_t i=0; i<6; i++) - { - d |= (m_D[i]() << i); - } - m_clrq = m_CLRQ(); - if (!m_clrq) - { - for (std::size_t i=0; i<6; i++) - { - m_Q[i].push(0, NLTIME_FROM_NS(40)); - } - m_data = 0; - } else if (d != m_data) - { - m_data = d; - m_CLK.activate_lh(); - } - } - - - NETLIB_RESET(74174) - { - m_CLK.set_state(logic_t::STATE_INP_LH); - m_clrq = 0; - m_data = 0xFF; - } - - NETLIB_DEVICE_IMPL(74174, "TTL_74174", "+CLK,+D1,+D2,+D3,+D4,+D5,+D6,+CLRQ,@VCC,@GND") - NETLIB_DEVICE_IMPL(74174_dip,"TTL_74174_DIP", "") + NETLIB_DEVICE_IMPL(74174, "TTL_74174", "+CLK,+D1,+D2,+D3,+D4,+D5,+D6,+CLRQ,@VCC,@GND") - } //namespace devices -} // namespace netlist +} // namespace netlist::devices |