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// license:GPL-2.0+
// copyright-holders:Couriersud
/*
* nld_signal.h
*
*/
#ifndef NLD_SIGNAL_H_
#define NLD_SIGNAL_H_
#include "nl_base.h"
// ----------------------------------------------------------------------------------------
// MACROS
// ----------------------------------------------------------------------------------------
#define NETLIB_SIGNAL(_name, _num_input, _check, _invert) \
class NETLIB_NAME(_name) : public net_signal_t<_num_input, _check, _invert> \
{ \
public: \
NETLIB_NAME(_name) () \
: net_signal_t<_num_input, _check, _invert>() { } \
}
NETLIB_NAMESPACE_DEVICES_START()
// ----------------------------------------------------------------------------------------
// net_signal_t
// ----------------------------------------------------------------------------------------
template <int _numdev, int _check, int _invert>
class net_signal_t : public device_t
{
public:
net_signal_t()
: device_t(), m_active(1)
{
}
void start() override
{
const char *sIN[8] = { "A", "B", "C", "D", "E", "F", "G", "H" };
register_output("Q", m_Q[0]);
for (int i=0; i < _numdev; i++)
{
register_input(sIN[i], m_I[i]);
}
save(NLNAME(m_active));
}
void reset() override
{
m_Q[0].initial(0);
m_active = 1;
}
ATTR_HOT inline netlist_sig_t process()
{
for (int i = 0; i< _numdev; i++)
{
this->m_I[i].activate();
if (INPLOGIC(this->m_I[i]) == _check)
{
for (int j = 0; j < i; j++)
this->m_I[j].inactivate();
for (int j = i + 1; j < _numdev; j++)
this->m_I[j].inactivate();
return _check ^ (1 ^ _invert);
}
}
return _check ^ _invert;
}
ATTR_HOT virtual void inc_active() override
{
const netlist_time times[2] = { NLTIME_FROM_NS(15), NLTIME_FROM_NS(22)};
nl_assert(netlist().use_deactivate());
if (++m_active == 1)
{
// FIXME: need to activate before time is accessed !
netlist_time mt = netlist_time::zero;
for (int i = 0; i< _numdev; i++)
{
if (this->m_I[i].net().time() > mt)
mt = this->m_I[i].net().time();
}
netlist_sig_t r = process();
m_Q[0].net().set_Q_time(r, mt + times[r]);
}
}
ATTR_HOT virtual void dec_active() override
{
nl_assert(netlist().use_deactivate());
if (--m_active == 0)
{
for (int i = 0; i< _numdev; i++)
m_I[i].inactivate();
}
}
virtual void update() override
{
const netlist_time times[2] = { NLTIME_FROM_NS(15), NLTIME_FROM_NS(22)};
netlist_sig_t r = process();
OUTLOGIC(this->m_Q[0], r, times[r]);
}
public:
logic_input_t m_I[_numdev];
logic_output_t m_Q[1];
INT32 m_active;
};
NETLIB_NAMESPACE_DEVICES_END()
#endif /* NLD_SIGNAL_H_ */
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