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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/*
* nld_dm9334.cpp
*
* DM9334: 8-Bit Addressable Latch
*
* +--------------+
* A0 |1 ++ 16| VCC
* A1 |2 15| /C
* A2 |3 14| /E
* Q0 |4 DM9334 13| D
* Q1 |5 12| Q7
* Q2 |6 11| Q6
* Q3 |7 10| Q5
* GND |8 9| Q4
* +--------------+
*
* +---+---++---++---+---+---++---+---+---+---+---+---+---+---+
* | C | E || D || A0| A1| A2|| Q0| Q1| Q2| Q3| Q4| Q5| Q6| Q7|
* +===+===++===++===+===+===++===+===+===+===+===+===+===+===+
* | 1 | 0 || X || X | X | X || 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
* +---+---++---++---+---+---++---+---+---+---+---+---+---+---+
* | 1 | 1 || 0 || 0 | 0 | 0 || 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 1 || 0 | 0 | 0 || 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 0 || 0 | 0 | 1 || 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 1 || 0 | 0 | 1 || 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 0 || 0 | 1 | 0 || 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 1 || 0 | 1 | 0 || 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 0 || 0 | 1 | 1 || 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 1 || 0 | 1 | 1 || 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 0 || 1 | 0 | 0 || 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 1 || 1 | 0 | 0 || 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
* | 1 | 1 || 0 || 1 | 0 | 1 || 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 1 || 1 | 0 | 1 || 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
* | 1 | 1 || 0 || 1 | 1 | 0 || 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 1 || 1 | 1 | 0 || 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
* | 1 | 1 || 0 || 1 | 1 | 1 || 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
* | 1 | 1 || 1 || 1 | 1 | 1 || 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
* +---+---++---++---+---+---++---+---+---+---+---+---+---+---+
* | 0 | 0 || X || X | X | X || P | P | P | P | P | P | P | P |
* +---+---++---++---+---+---++---+---+---+---+---+---+---+---+
* | 0 | 1 || 0 || 0 | 0 | 0 || 0 | P | P | P | P | P | P | P |
* | 0 | 1 || 1 || 0 | 0 | 0 || 1 | P | P | P | P | P | P | P |
* | 0 | 1 || 0 || 0 | 0 | 1 || P | 0 | P | P | P | P | P | P |
* | 0 | 1 || 1 || 0 | 0 | 1 || P | 1 | P | P | P | P | P | P |
* | 0 | 1 || 0 || 0 | 1 | 0 || P | P | 0 | P | P | P | P | P |
* | 0 | 1 || 1 || 0 | 1 | 0 || P | P | 1 | P | P | P | P | P |
* | 0 | 1 || 0 || 0 | 1 | 1 || P | P | P | 0 | P | P | P | P |
* | 0 | 1 || 1 || 0 | 1 | 1 || P | P | P | 1 | P | P | P | P |
* | 0 | 1 || 0 || 1 | 0 | 0 || P | P | P | P | 0 | P | P | P |
* | 0 | 1 || 1 || 1 | 0 | 0 || P | P | P | P | 1 | P | P | P |
* | 0 | 1 || 0 || 1 | 0 | 1 || P | P | P | P | P | 0 | P | P |
* | 0 | 1 || 1 || 1 | 0 | 1 || P | P | P | P | P | 1 | P | P |
* | 0 | 1 || 0 || 1 | 1 | 0 || P | P | P | P | P | P | 0 | P |
* | 0 | 1 || 1 || 1 | 1 | 0 || P | P | P | P | P | P | 1 | P |
* | 0 | 1 || 0 || 1 | 1 | 1 || P | P | P | P | P | P | P | 0 |
* | 0 | 1 || 1 || 1 | 1 | 1 || P | P | P | P | P | P | P | 1 |
* +---+---++---++---+---+---++---+---+---+---+---+---+---+---+
*
* Naming convention attempts to follow Texas Instruments / National Semiconductor datasheet Literature Number SNOS382A
*
*/
#include "nl_base.h"
namespace netlist
{
namespace devices
{
NETLIB_OBJECT(9334)
{
NETLIB_CONSTRUCTOR(9334)
, m_CQ(*this, "CQ", NETLIB_DELEGATE(inputs))
, m_EQ(*this, "EQ", NETLIB_DELEGATE(inputs))
, m_D(*this, "D", NETLIB_DELEGATE(inputs))
, m_A(*this, {"A0", "A1", "A2"}, NETLIB_DELEGATE(inputs))
, m_Q(*this, {"Q0", "Q1", "Q2", "Q3", "Q4", "Q5", "Q6", "Q7"})
, m_last_CQ(*this, "m_last_CQ", 0)
, m_last_EQ(*this, "m_last_EQ", 0)
, m_last_D(*this, "m_last_D", 0)
, m_last_A(*this, "m_last_A", 0)
, m_last_Q(*this, "m_last_Q", 0)
, m_power_pins(*this)
{
}
private:
NETLIB_RESETI()
{
m_last_CQ = 0;
m_last_EQ = 0;
m_last_D = 0;
m_last_A = 0;
m_last_Q = 0;
}
NETLIB_HANDLERI(inputs)
{
uint_fast8_t a = 0;
for (std::size_t i=0; i<3; i++)
{
a |= (m_A[i]() << i);
}
netlist_time delay = NLTIME_FROM_NS(27); // Clear Low to High Level Output (not documented, making reasonable guess)
if (a != m_last_A)
{
delay = NLTIME_FROM_NS(35);
}
else if (m_D() != m_last_D)
{
if (m_last_D)
{
delay = NLTIME_FROM_NS(28);
}
else
{
delay = NLTIME_FROM_NS(35);
}
}
else if (m_EQ() != m_last_EQ)
{
if (m_last_EQ)
{
delay = NLTIME_FROM_NS(27);
}
else
{
delay = NLTIME_FROM_NS(28);
}
}
unsigned q = m_last_Q;
if (!m_CQ())
{
if (m_EQ())
{
q = 0;
}
else
{
q = m_D() << a;
}
}
else if(!m_EQ())
{
q &= ~(1 << a);
q |= (m_D() << a);
}
m_last_CQ = m_CQ();
m_last_EQ = m_EQ();
m_last_D = m_D();
m_last_A = a;
m_last_Q = q;
for (std::size_t i=0; i<8; i++)
m_Q[i].push((q >> i) & 1, delay);
}
logic_input_t m_CQ;
logic_input_t m_EQ;
logic_input_t m_D;
object_array_t<logic_input_t, 3> m_A;
object_array_t<logic_output_t, 8> m_Q;
state_var<unsigned> m_last_CQ;
state_var<unsigned> m_last_EQ;
state_var<unsigned> m_last_D;
state_var<unsigned> m_last_A;
state_var<unsigned> m_last_Q;
nld_power_pins m_power_pins;
};
NETLIB_DEVICE_IMPL(9334, "TTL_9334", "+CQ,+EQ,+D,+A0,+A1,+A2,@VCC,@GND")
} //namespace devices
} // namespace netlist
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