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// license:GPL-2.0+
// copyright-holders:Couriersud
/*
* nld_4020.h
*
* CD4020: 14-Stage Ripple Carry Binary Counters
*
* +--------------+
* Q12 |1 ++ 16| VDD
* Q13 |2 15| Q11
* Q14 |3 14| Q10
* Q6 |4 4020 13| Q8
* Q5 |5 12| Q9
* Q7 |6 11| RESET
* Q4 |7 10| IP (Input pulses)
* VSS |8 9| Q1
* +--------------+
*
*
* Naming conventions follow Texas Instruments datasheet
*
* FIXME: Timing depends on VDD-VSS
* This needs a cmos d-a/a-d proxy implementation.
*
*/
#ifndef NLD_4020_H_
#define NLD_4020_H_
#include "nl_base.h"
#include "nld_cmos.h"
/* FIXME: only used in mario.c */
#define CD4020_WI(_name, _IP, _RESET, _VDD, _VSS) \
NET_REGISTER_DEV(CD4020_WI, _name) \
NET_CONNECT(_name, IP, _IP) \
NET_CONNECT(_name, RESET, _RESET) \
NET_CONNECT(_name, VDD, _VDD) \
NET_CONNECT(_name, VSS, _VSS)
#define CD4020(_name) \
NET_REGISTER_DEV(CD4020, _name)
NETLIB_NAMESPACE_DEVICES_START()
NETLIB_OBJECT(CD4020_sub)
{
NETLIB_CONSTRUCTOR(CD4020_sub)
NETLIB_FAMILY("CD4XXX")
, m_cnt(0)
{
enregister("IP", m_IP);
enregister("Q1", m_Q[0]);
enregister("Q4", m_Q[3]);
enregister("Q5", m_Q[4]);
enregister("Q6", m_Q[5]);
enregister("Q7", m_Q[6]);
enregister("Q8", m_Q[7]);
enregister("Q9", m_Q[8]);
enregister("Q10", m_Q[9]);
enregister("Q11", m_Q[10]);
enregister("Q12", m_Q[11]);
enregister("Q13", m_Q[12]);
enregister("Q14", m_Q[13]);
save(NLNAME(m_cnt));
}
NETLIB_RESETI()
{
m_IP.set_state(logic_t::STATE_INP_HL);
m_cnt = 0;
}
NETLIB_UPDATEI();
public:
ATTR_HOT void update_outputs(const UINT16 cnt);
logic_input_t m_IP;
logic_output_t m_Q[14];
UINT16 m_cnt;
};
NETLIB_OBJECT(CD4020)
{
NETLIB_CONSTRUCTOR(CD4020)
NETLIB_FAMILY("CD4XXX")
, m_sub(*this, "sub")
, m_supply(*this, "supply")
{
enregister("RESET", m_RESET);
register_subalias("IP", m_sub.m_IP);
register_subalias("Q1", m_sub.m_Q[0]);
register_subalias("Q4", m_sub.m_Q[3]);
register_subalias("Q5", m_sub.m_Q[4]);
register_subalias("Q6", m_sub.m_Q[5]);
register_subalias("Q7", m_sub.m_Q[6]);
register_subalias("Q8", m_sub.m_Q[7]);
register_subalias("Q9", m_sub.m_Q[8]);
register_subalias("Q10", m_sub.m_Q[9]);
register_subalias("Q11", m_sub.m_Q[10]);
register_subalias("Q12", m_sub.m_Q[11]);
register_subalias("Q13", m_sub.m_Q[12]);
register_subalias("Q14", m_sub.m_Q[13]);
register_subalias("VDD", m_supply.m_vdd);
register_subalias("VSS", m_supply.m_vss);
}
NETLIB_RESETI() { }
NETLIB_UPDATEI();
private:
NETLIB_SUB(CD4020_sub) m_sub;
NETLIB_SUB(vdd_vss) m_supply;
logic_input_t m_RESET;
};
NETLIB_NAMESPACE_DEVICES_END()
#endif /* NLD_4020_H_ */
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