// license:BSD-3-Clause // copyright-holders:Ryan Holtz /* * nld_82S115.cpp * */ #include "nld_82S115.h" #include "netlist/nl_base.h" #include "nlid_system.h" namespace netlist { namespace devices { NETLIB_OBJECT(82S115) { NETLIB_CONSTRUCTOR(82S115) , m_A(*this, {{"A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8"}}) , m_CE1Q(*this, "CE1Q") , m_CE2(*this, "CE2") , m_STROBE(*this, "STROBE") , m_O(*this, {{"O1", "O2", "O3", "O4", "O5", "O6", "O7", "O8"}}) , m_last_O(*this, "m_last_O", 0) , m_ROM(*this, "ROM") , m_power_pins(*this) { } NETLIB_RESETI(); NETLIB_UPDATEI(); protected: object_array_t m_A; logic_input_t m_CE1Q; logic_input_t m_CE2; logic_input_t m_STROBE; object_array_t m_O; state_var m_last_O; param_rom_t m_ROM; // 4096 bits, 512x8 nld_power_pins m_power_pins; }; NETLIB_OBJECT_DERIVED(82S115_dip, 82S115) { NETLIB_CONSTRUCTOR_DERIVED(82S115_dip, 82S115) { register_subalias("21", m_A[0]); register_subalias("22", m_A[1]); register_subalias("23", m_A[2]); register_subalias("1", m_A[3]); register_subalias("2", m_A[4]); register_subalias("3", m_A[5]); register_subalias("4", m_A[6]); register_subalias("5", m_A[7]); register_subalias("6", m_A[8]); register_subalias("20", m_CE1Q); register_subalias("19", m_CE2); // register_subalias("13", m_FE1); // register_subalias("11", m_FE2); register_subalias("18", m_STROBE); register_subalias("7", m_O[0]); register_subalias("8", m_O[1]); register_subalias("9", m_O[2]); register_subalias("10", m_O[3]); register_subalias("14", m_O[4]); register_subalias("15", m_O[5]); register_subalias("16", m_O[6]); register_subalias("17", m_O[7]); register_subalias("12", "GND"); register_subalias("24", "VCC"); } }; NETLIB_RESET(82S115) { m_last_O = 0; } // FIXME: timing! NETLIB_UPDATE(82S115) { unsigned o = 0; if (!m_CE1Q() && m_CE2()) { if (m_STROBE()) { unsigned a = 0; for (std::size_t i=0; i<9; i++) a |= (m_A[i]() << i); o = m_ROM[a]; } else { o = m_last_O; } } m_last_O = o; // 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, NLTIME_FROM_NS(40)); // FIXME: Timing } NETLIB_DEVICE_IMPL(82S115, "PROM_82S115", "+CE1Q,+CE2,+A0,+A1,+A2,+A3,+A4,+A5,+A6,+A7,+A8,+STROBE,@VCC,@GND") NETLIB_DEVICE_IMPL(82S115_dip, "PROM_82S115_DIP", "") } //namespace devices } // namespace netlist