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Diffstat (limited to 'src/lib/netlist/devices/nld_7474.cpp')
-rw-r--r--src/lib/netlist/devices/nld_7474.cpp127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/lib/netlist/devices/nld_7474.cpp b/src/lib/netlist/devices/nld_7474.cpp
new file mode 100644
index 00000000000..11088c89a79
--- /dev/null
+++ b/src/lib/netlist/devices/nld_7474.cpp
@@ -0,0 +1,127 @@
+// license:GPL-2.0+
+// copyright-holders:Couriersud
+/*
+ * nld_7474.c
+ *
+ */
+
+#include "nld_7474.h"
+
+NETLIB_NAMESPACE_DEVICES_START()
+
+ATTR_HOT inline void NETLIB_NAME(7474sub)::newstate(const UINT8 stateQ, const UINT8 stateQQ)
+{
+ // 0: High-to-low 40 ns, 1: Low-to-high 25 ns
+ const netlist_time delay[2] = { NLTIME_FROM_NS(40), NLTIME_FROM_NS(25) };
+ OUTLOGIC(m_Q, stateQ, delay[stateQ]);
+ OUTLOGIC(m_QQ, stateQQ, delay[stateQQ]);
+}
+
+NETLIB_UPDATE(7474sub)
+{
+ //if (INP_LH(m_CLK))
+ {
+ newstate(m_nextD, !m_nextD);
+ m_CLK.inactivate();
+ }
+}
+
+NETLIB_UPDATE(7474)
+{
+ if (INPLOGIC(m_PREQ) && INPLOGIC(m_CLRQ))
+ {
+ m_D.activate();
+ sub.m_nextD = INPLOGIC(m_D);
+ sub.m_CLK.activate_lh();
+ }
+ else if (!INPLOGIC(m_PREQ))
+ {
+ sub.newstate(1, 0);
+ sub.m_CLK.inactivate();
+ m_D.inactivate();
+ }
+ else if (!INPLOGIC(m_CLRQ))
+ {
+ sub.newstate(0, 1);
+ sub.m_CLK.inactivate();
+ m_D.inactivate();
+ }
+ else
+ {
+ sub.newstate(1, 1);
+ sub.m_CLK.inactivate();
+ m_D.inactivate();
+ }
+}
+
+NETLIB_START(7474)
+{
+ register_sub("sub", sub);
+
+ register_subalias("CLK", sub.m_CLK);
+ register_input("D", m_D);
+ register_input("CLRQ", m_CLRQ);
+ register_input("PREQ", m_PREQ);
+
+ register_subalias("Q", sub.m_Q);
+ register_subalias("QQ", sub.m_QQ);
+
+}
+
+NETLIB_RESET(7474)
+{
+ sub.do_reset();
+}
+
+NETLIB_START(7474sub)
+{
+ register_input("CLK", m_CLK);
+
+ register_output("Q", m_Q);
+ register_output("QQ", m_QQ);
+
+ save(NLNAME(m_nextD));
+}
+
+NETLIB_RESET(7474sub)
+{
+ m_CLK.set_state(logic_t::STATE_INP_LH);
+
+ m_nextD = 0;
+}
+
+NETLIB_START(7474_dip)
+{
+ register_sub("1", m_1);
+ register_sub("2", m_2);
+
+ register_subalias("1", m_1.m_CLRQ);
+ register_subalias("2", m_1.m_D);
+ register_subalias("3", m_1.sub.m_CLK);
+ register_subalias("4", m_1.m_PREQ);
+ register_subalias("5", m_1.sub.m_Q);
+ register_subalias("6", m_1.sub.m_QQ);
+ // register_subalias("7", ); ==> GND
+
+ register_subalias("8", m_2.sub.m_QQ);
+ register_subalias("9", m_2.sub.m_Q);
+ register_subalias("10", m_2.m_PREQ);
+ register_subalias("11", m_2.sub.m_CLK);
+ register_subalias("12", m_2.m_D);
+ register_subalias("13", m_2.m_CLRQ);
+ // register_subalias("14", ); ==> VCC
+}
+
+NETLIB_RESET(7474_dip)
+{
+ m_1.do_reset();
+ m_2.do_reset();
+}
+
+NETLIB_UPDATE(7474_dip)
+{
+ m_1.update_dev();
+ m_2.update_dev();
+}
+
+NETLIB_NAMESPACE_DEVICES_END()