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Diffstat (limited to 'src/emu/netlist/devices/nld_system.c')
-rw-r--r--src/emu/netlist/devices/nld_system.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/src/emu/netlist/devices/nld_system.c b/src/emu/netlist/devices/nld_system.c
index 4d02f5e9157..b4232819f05 100644
--- a/src/emu/netlist/devices/nld_system.c
+++ b/src/emu/netlist/devices/nld_system.c
@@ -135,3 +135,55 @@ ATTR_HOT ATTR_ALIGN void nld_d_to_a_proxy::update()
}
}
}
+
+
+// -----------------------------------------------------------------------------
+// nld_res_sw
+// -----------------------------------------------------------------------------
+
+NETLIB_START(res_sw)
+{
+ register_sub(m_R, "R");
+ register_input("I", m_I);
+ register_param("RON", m_RON, 1.0);
+ register_param("ROFF", m_ROFF, 1.0E20);
+
+ register_subalias("1", m_R.m_P);
+ register_subalias("2", m_R.m_N);
+
+ save(NLNAME(m_last_state));
+}
+
+NETLIB_RESET(res_sw)
+{
+ m_last_state = 0;
+ m_R.set_R(m_ROFF.Value());
+}
+
+NETLIB_UPDATE(res_sw)
+{
+ const int state = INPLOGIC(m_I);
+ if (state != m_last_state)
+ {
+ m_last_state = state;
+ const nl_double R = state ? m_RON.Value() : m_ROFF.Value();
+
+ // We only need to update the net first if this is a time stepping net
+ if (1) // m_R.m_P.net().as_analog().solver()->is_timestep())
+ {
+ m_R.update_dev();
+ m_R.set_R(R);
+ m_R.m_P.schedule_after(NLTIME_FROM_NS(1));
+ }
+ else
+ {
+ m_R.set_R(R);
+ m_R.update_dev();
+ }
+ }
+}
+
+NETLIB_UPDATE_PARAM(res_sw)
+{
+ // nothing, not intended to be called
+}