mirror of
https://github.com/holub/mame
synced 2025-05-30 01:23:07 +03:00
57 lines
1.1 KiB
C++
57 lines
1.1 KiB
C++
// license:GPL-2.0+
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// copyright-holders:Couriersud
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/*
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* nld_R2R_dac.c
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*
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*/
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#include "netlist/nl_base.h"
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#include "netlist/analog/nlid_twoterm.h"
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#include "netlist/nl_factory.h"
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namespace netlist
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{
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namespace analog
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{
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NETLIB_OBJECT_DERIVED(r2r_dac, twoterm)
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{
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NETLIB_CONSTRUCTOR_DERIVED(r2r_dac, twoterm)
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, m_VIN(*this, "VIN", nlconst::one())
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, m_R(*this, "R", nlconst::one())
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, m_num(*this, "N", 1)
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, m_val(*this, "VAL", 1)
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{
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register_subalias("VOUT", m_P);
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register_subalias("VGND", m_N);
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}
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NETLIB_UPDATE_PARAMI();
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//NETLIB_RESETI();
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//NETLIB_UPDATEI();
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protected:
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param_fp_t m_VIN;
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param_fp_t m_R;
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param_int_t m_num;
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param_int_t m_val;
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};
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NETLIB_UPDATE_PARAM(r2r_dac)
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{
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// FIXME: We only need to update the net first if this is a time stepping net
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solve_now();
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nl_fptype V = m_VIN() / static_cast<nl_fptype>(1 << m_num())
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* static_cast<nl_fptype>(m_val());
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this->set_G_V_I(plib::reciprocal(m_R()), V, nlconst::zero());
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solve_later();
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}
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} //namespace analog
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namespace devices {
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NETLIB_DEVICE_IMPL_NS(analog, r2r_dac, "R2R_DAC", "VIN,R,N")
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} // namespace devices
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} // namespace netlist
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