// license:BSD-3-Clause // copyright-holders:Ryan Holtz /* * nld_2716.cpp * */ #include "nld_2716.h" #include "netlist/nl_base.h" #include "nlid_system.h" namespace netlist { namespace devices { NETLIB_OBJECT(2716) { NETLIB_CONSTRUCTOR(2716) , m_A(*this, {{ "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "A10" }}) , m_GQ(*this, "GQ") , m_EPQ(*this, "EPQ") , m_D(*this, {{ "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7" }}) , m_last_EPQ(*this, "m_last_EPQ", 1) , m_ROM(*this, "ROM") , m_power_pins(*this) { } NETLIB_UPDATEI(); protected: object_array_t m_A; logic_input_t m_GQ; logic_input_t m_EPQ; object_array_t m_D; state_var m_last_EPQ; param_rom_t m_ROM; // 16 Kbits, used as 2 Kbit x 8 nld_power_pins m_power_pins; }; NETLIB_OBJECT_DERIVED(2716_dip, 2716) { NETLIB_CONSTRUCTOR_DERIVED(2716_dip, 2716) { register_subalias("8", m_A[0]); register_subalias("7", m_A[1]); register_subalias("6", m_A[2]); register_subalias("5", m_A[3]); register_subalias("4", m_A[4]); register_subalias("3", m_A[5]); register_subalias("2", m_A[6]); register_subalias("1", m_A[7]); register_subalias("23", m_A[8]); register_subalias("22", m_A[9]); register_subalias("19", m_A[10]); register_subalias("20", m_GQ); register_subalias("18", m_EPQ); register_subalias("9", m_D[0]); register_subalias("10", m_D[1]); register_subalias("11", m_D[2]); register_subalias("13", m_D[3]); register_subalias("14", m_D[4]); register_subalias("15", m_D[5]); register_subalias("16", m_D[6]); register_subalias("17", m_D[7]); register_subalias("12", "GND"); register_subalias("24", "VCC"); } }; // FIXME: timing! NETLIB_UPDATE(2716) { unsigned d = 0xff; netlist_time delay = NLTIME_FROM_NS(450); if (!m_GQ() && !m_EPQ()) { unsigned a = 0; for (std::size_t i=0; i<11; i++) a |= (m_A[i]() << i); d = m_ROM[a]; if (m_last_EPQ) delay = NLTIME_FROM_NS(120); } m_last_EPQ = m_EPQ(); // FIXME: Outputs are tristate. This needs to be properly implemented for (std::size_t i=0; i<8; i++) m_D[i].push((d >> i) & 1, delay); } NETLIB_DEVICE_IMPL(2716, "EPROM_2716", "+GQ,+EPQ,+A0,+A1,+A2,+A3,+A4,+A5,+A6,+A7,+A8,+A9,+A10,@VCC,@GND") NETLIB_DEVICE_IMPL(2716_dip, "EPROM_2716_DIP", "") } //namespace devices } // namespace netlist