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Diffstat (limited to 'src/lib/netlist/devices/nld_7486.cpp')
-rw-r--r--src/lib/netlist/devices/nld_7486.cpp117
1 files changed, 117 insertions, 0 deletions
diff --git a/src/lib/netlist/devices/nld_7486.cpp b/src/lib/netlist/devices/nld_7486.cpp
new file mode 100644
index 00000000000..5957c2c0433
--- /dev/null
+++ b/src/lib/netlist/devices/nld_7486.cpp
@@ -0,0 +1,117 @@
+// license:GPL-2.0+
+// copyright-holders:Couriersud
+/*
+ * nld_7486.c
+ *
+ */
+
+#include "nld_7486.h"
+
+NETLIB_NAMESPACE_DEVICES_START()
+
+#if (USE_TRUTHTABLE)
+nld_7486::truthtable_t nld_7486::m_ttbl;
+const char *nld_7486::m_desc[] = {
+ "A , B | Q ",
+ "0,0|0|15",
+ "0,1|1|22",
+ "1,0|1|22",
+ "1,1|0|15",
+ ""
+};
+#else
+NETLIB_START(7486)
+{
+ register_input("A", m_I[0]);
+ register_input("B", m_I[1]);
+ register_output("Q", m_Q[0]);
+
+ save(NLNAME(m_active));
+}
+
+NETLIB_RESET(7486)
+{
+ m_active = 1;
+}
+
+NETLIB_UPDATE(7486)
+{
+ const netlist_time delay[2] = { NLTIME_FROM_NS(15), NLTIME_FROM_NS(22) };
+
+ UINT8 t = INPLOGIC(m_I[0]) ^ INPLOGIC(m_I[1]);
+ OUTLOGIC(m_Q[0], t, delay[t]);
+}
+
+ATTR_HOT void NETLIB_NAME(7486)::inc_active()
+{
+ const netlist_time delay[2] = { NLTIME_FROM_NS(15), NLTIME_FROM_NS(22) };
+ nl_assert(netlist().use_deactivate());
+ if (++m_active == 1)
+ {
+ m_I[0].activate();
+ m_I[1].activate();
+
+ netlist_time mt = this->m_I[0].net().time();
+ if (this->m_I[1].net().time() > mt)
+ mt = this->m_I[1].net().time();
+
+ UINT8 t = INPLOGIC(m_I[0]) ^ INPLOGIC(m_I[1]);
+ m_Q[0].net().set_Q_time(t, mt + delay[t]);
+ }
+}
+
+ATTR_HOT void NETLIB_NAME(7486)::dec_active()
+{
+#if 1
+ nl_assert(netlist().use_deactivate());
+ if (--m_active == 0)
+ {
+ m_I[0].inactivate();
+ m_I[1].inactivate();
+ }
+#endif
+}
+#endif
+
+NETLIB_START(7486_dip)
+{
+ register_sub("1", m_1);
+ register_sub("2", m_2);
+ register_sub("3", m_3);
+ register_sub("4", m_4);
+
+ register_subalias("1", m_1.m_I[0]);
+ register_subalias("2", m_1.m_I[1]);
+ register_subalias("3", m_1.m_Q[0]);
+
+ register_subalias("4", m_2.m_I[0]);
+ register_subalias("5", m_2.m_I[1]);
+ register_subalias("6", m_2.m_Q[0]);
+
+ register_subalias("9", m_3.m_I[0]);
+ register_subalias("10", m_3.m_I[1]);
+ register_subalias("8", m_3.m_Q[0]);
+
+ register_subalias("12", m_4.m_I[0]);
+ register_subalias("13", m_4.m_I[1]);
+ register_subalias("11", m_4.m_Q[0]);
+}
+
+NETLIB_UPDATE(7486_dip)
+{
+ /* only called during startup */
+ m_1.update_dev();
+ m_2.update_dev();
+ m_3.update_dev();
+ m_4.update_dev();
+}
+
+NETLIB_RESET(7486_dip)
+{
+ m_1.do_reset();
+ m_2.do_reset();
+ m_3.do_reset();
+ m_4.do_reset();
+}
+
+NETLIB_NAMESPACE_DEVICES_END()