mirror of
https://github.com/holub/mame
synced 2025-10-04 16:34:53 +03:00
6b96f7ba60
This fixes an over simplification. Logic devices implicitly assumed that GND/VDD actually is connected to GND(i.e. 0V). There is no immediate benefit from this change. It is a preparation for the future scalability. Now all power terminals (typically 7/14, 8/16) have to be explicitly connected to the supply rails. Also added a validation mode to the netlist core. This is not intended for running, but solely to better indentify pins which are not properly connected.
89 lines
1.9 KiB
C++
89 lines
1.9 KiB
C++
// license:BSD-3-Clause
|
|
// copyright-holders:Ryan Holtz
|
|
/*
|
|
* nld_74365.cpp
|
|
*
|
|
*/
|
|
|
|
#include "nld_74365.h"
|
|
#include "netlist/nl_base.h"
|
|
#include "nlid_system.h"
|
|
|
|
namespace netlist
|
|
{
|
|
namespace devices
|
|
{
|
|
|
|
/* FIXME: This should be a single device, i.e. one tristate buffer only.
|
|
*
|
|
* FIXME: Implement tristate output.
|
|
*
|
|
*/
|
|
|
|
|
|
NETLIB_OBJECT(74365)
|
|
{
|
|
NETLIB_CONSTRUCTOR(74365)
|
|
, m_G1Q(*this, "G1Q")
|
|
, m_G2Q(*this, "G2Q")
|
|
, m_A(*this, {{ "A1", "A2", "A3", "A4", "A5", "A6" }})
|
|
, m_Y(*this, {{ "Y1", "Y2", "Y3", "Y4", "Y5", "Y6" }})
|
|
, m_power_pins(*this)
|
|
{
|
|
}
|
|
|
|
NETLIB_UPDATEI();
|
|
|
|
protected:
|
|
logic_input_t m_G1Q;
|
|
logic_input_t m_G2Q;
|
|
object_array_t<logic_input_t, 6> m_A;
|
|
object_array_t<logic_output_t, 6> m_Y;
|
|
nld_power_pins m_power_pins;
|
|
};
|
|
|
|
NETLIB_OBJECT_DERIVED(74365_dip, 74365)
|
|
{
|
|
NETLIB_CONSTRUCTOR_DERIVED(74365_dip, 74365)
|
|
{
|
|
register_subalias("1", m_G1Q);
|
|
register_subalias("2", m_A[0]);
|
|
register_subalias("3", m_Y[0]);
|
|
register_subalias("4", m_A[1]);
|
|
register_subalias("5", m_Y[1]);
|
|
register_subalias("6", m_A[2]);
|
|
register_subalias("7", m_Y[2]);
|
|
register_subalias("8", "GND");
|
|
|
|
register_subalias("9", m_A[3]);
|
|
register_subalias("10", m_Y[3]);
|
|
register_subalias("11", m_A[4]);
|
|
register_subalias("12", m_Y[4]);
|
|
register_subalias("13", m_A[5]);
|
|
register_subalias("14", m_Y[5]);
|
|
register_subalias("15", m_G2Q);
|
|
register_subalias("16", "VCC");
|
|
|
|
}
|
|
};
|
|
|
|
NETLIB_UPDATE(74365)
|
|
{
|
|
if (!m_G1Q() && !m_G2Q())
|
|
{
|
|
for (std::size_t i=0; i<6; i++)
|
|
m_Y[i].push(m_A[i](), NLTIME_FROM_NS(20)); // FIXME: Correct timing
|
|
}
|
|
else
|
|
{
|
|
for (std::size_t i=0; i<6; i++)
|
|
m_Y[i].push(0, NLTIME_FROM_NS(20)); // FIXME: Correct timing
|
|
}
|
|
}
|
|
|
|
NETLIB_DEVICE_IMPL(74365, "TTL_74365", "+G1Q,+G2Q,+A1,+A2,+A3,+A4,+A5,+A6,@VCC,@GND")
|
|
NETLIB_DEVICE_IMPL(74365_dip, "TTL_74365_DIP", "")
|
|
|
|
} //namespace devices
|
|
} // namespace netlist
|