// license:BSD-3-Clause // copyright-holders:Ryan Holtz /* * nld_82S123.cpp * */ #include "nld_82S123.h" #include "netlist/nl_base.h" #include "nlid_system.h" namespace netlist { namespace devices { NETLIB_OBJECT(82S123) { NETLIB_CONSTRUCTOR(82S123) , m_A(*this, {{"A0", "A1", "A2", "A3", "A4"}}) , m_CEQ(*this, "CEQ") , m_O(*this, {{"O1", "O2", "O3", "O4", "O5", "O6", "O7", "O8"}}) , m_ROM(*this, "ROM") , m_power_pins(*this) { } NETLIB_UPDATEI(); protected: object_array_t m_A; logic_input_t m_CEQ; object_array_t m_O; param_rom_t m_ROM; // 256 bits, 32x8 nld_power_pins m_power_pins; }; NETLIB_OBJECT_DERIVED(82S123_dip, 82S123) { NETLIB_CONSTRUCTOR_DERIVED(82S123_dip, 82S123) { register_subalias("1", m_O[0]); register_subalias("2", m_O[1]); register_subalias("3", m_O[2]); register_subalias("4", m_O[3]); register_subalias("5", m_O[4]); register_subalias("6", m_O[5]); register_subalias("7", m_O[6]); register_subalias("8", "GND"); register_subalias("9", m_O[7]); register_subalias("10", m_A[0]); register_subalias("11", m_A[1]); register_subalias("12", m_A[2]); register_subalias("13", m_A[3]); register_subalias("14", m_A[4]); register_subalias("15", m_CEQ); register_subalias("16", "VCC"); } }; // FIXME: timing! NETLIB_UPDATE(82S123) { unsigned o = 0xff; netlist_time delay = NLTIME_FROM_NS(35); if (!m_CEQ()) { unsigned a = 0; for (std::size_t i=0; i<5; i++) a |= (m_A[i]() << i); o = m_ROM[a]; delay = NLTIME_FROM_NS(50); } // FIXME: Outputs are tristate. This needs to be properly implemented for (std::size_t i=0; i<8; i++) m_O[i].push((o >> i) & 1, delay); } NETLIB_DEVICE_IMPL(82S123, "PROM_82S123", "+CEQ,+A0,+A1,+A2,+A3,+A4,@VCC,@GND") NETLIB_DEVICE_IMPL(82S123_dip, "PROM_82S123_DIP", "") } //namespace devices } // namespace netlist