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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/*
* nld_2102A.cpp
*
*/
#include "nld_2102A.h"
#include "netlist/nl_base.h"
#define ADDR2BYTE(a) ((a) >> 3)
#define ADDR2BIT(a) ((a) & 0x7)
namespace netlist
{
namespace devices
{
NETLIB_OBJECT(2102A)
{
NETLIB_CONSTRUCTOR(2102A)
, m_A(*this, {"A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9" }, NETLIB_DELEGATE(inputs))
, m_CEQ(*this, "CEQ", NETLIB_DELEGATE(inputs))
, m_RWQ(*this, "RWQ", NETLIB_DELEGATE(inputs))
, m_DI(*this, "DI", NETLIB_DELEGATE(inputs))
, m_DO(*this, "DO")
, m_ram(*this, "m_ram", 0)
, m_RAM(*this, "m_RAM", &m_ram[0])
, m_power_pins(*this)
{
}
NETLIB_RESETI()
{
m_RAM.set(&m_ram[0]);
for (std::size_t i=0; i<128; i++)
m_ram[i] = 0;
}
NETLIB_HANDLERI(inputs)
{
netlist_time max_delay = NLTIME_FROM_NS(350);
if (!m_CEQ())
{
unsigned a = 0;
for (std::size_t i=0; i<10; i++)
{
a |= (m_A[i]() << i);
}
const unsigned byte = ADDR2BYTE(a);
const unsigned bit = ADDR2BIT(a);
if (!m_RWQ())
{
m_ram[byte] &= ~(static_cast<uint8_t>(1) << bit);
m_ram[byte] |= (static_cast<uint8_t>(m_DI()) << bit);
}
m_DO.push((m_ram[byte] >> bit) & 1, max_delay);
}
}
friend class NETLIB_NAME(2102A_dip);
private:
object_array_t<logic_input_t, 10> m_A;
logic_input_t m_CEQ;
logic_input_t m_RWQ;
logic_input_t m_DI;
logic_output_t m_DO;
state_container<std::array<uint8_t, 128>> m_ram; // 1024x1 bits
param_ptr_t m_RAM;
nld_power_pins m_power_pins;
};
NETLIB_OBJECT(2102A_dip)
{
NETLIB_CONSTRUCTOR(2102A_dip)
, A(*this, "A")
{
register_subalias("8", A.m_A[0]);
register_subalias("4", A.m_A[1]);
register_subalias("5", A.m_A[2]);
register_subalias("6", A.m_A[3]);
register_subalias("7", A.m_A[4]);
register_subalias("2", A.m_A[5]);
register_subalias("1", A.m_A[6]);
register_subalias("16", A.m_A[7]);
register_subalias("15", A.m_A[8]);
register_subalias("14", A.m_A[9]);
register_subalias("13", A.m_CEQ);
register_subalias("3", A.m_RWQ);
register_subalias("11", A.m_DI);
register_subalias("12", A.m_DO);
register_subalias("10", "A.VCC");
register_subalias("9", "A.GND");
}
//NETLIB_RESETI() {}
private:
NETLIB_SUB(2102A) A;
};
NETLIB_DEVICE_IMPL(2102A, "RAM_2102A", "+CEQ,+A0,+A1,+A2,+A3,+A4,+A5,+A6,+A7,+A8,+A9,+RWQ,+DI,@VCC,@GND")
NETLIB_DEVICE_IMPL(2102A_dip,"RAM_2102A_DIP","")
} //namespace devices
} // namespace netlist
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