summaryrefslogtreecommitdiffstatshomepage
path: root/src/lib/netlist/devices/nld_74125.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/netlist/devices/nld_74125.cpp')
-rw-r--r--src/lib/netlist/devices/nld_74125.cpp77
1 files changed, 77 insertions, 0 deletions
diff --git a/src/lib/netlist/devices/nld_74125.cpp b/src/lib/netlist/devices/nld_74125.cpp
new file mode 100644
index 00000000000..aca9f4175e2
--- /dev/null
+++ b/src/lib/netlist/devices/nld_74125.cpp
@@ -0,0 +1,77 @@
+// license:BSD-3-Clause
+// copyright-holders:Couriersud
+/*
+ * nld_74125.cpp
+ *
+ */
+
+#include "nl_base.h"
+
+#include <type_traits>
+
+namespace netlist::devices {
+
+ template <typename D>
+ NETLIB_OBJECT(74125_base)
+ {
+ NETLIB_CONSTRUCTOR(74125_base)
+ , m_TE(*this, "FORCE_TRISTATE_LOGIC", 0)
+ , m_A(*this, "A", NETLIB_DELEGATE(A))
+ , m_G(*this, pstring(D::invert_g::value ? "G" : "GQ"), NETLIB_DELEGATE(G))
+ , m_Y(*this, "Y", m_TE())
+ //, m_Y(*this, "Y")
+ , m_power_pins(*this)
+ {
+ }
+
+ private:
+ //NETLIB_RESETI() {}
+
+ NETLIB_UPDATE_PARAMI()
+ {
+ // this one is only called during startup. Ensure all outputs
+ // are in a consistent state.
+ m_Y.set_tristate(m_G() ^ D::invert_g::value,
+ D::ts_off_on::value(), D::ts_on_off::value());
+ m_Y.push(m_A(), m_A() ? D::sig_off_on::value() : D::sig_on_off::value());
+ }
+
+ NETLIB_HANDLERI(A)
+ {
+ m_Y.push(m_A(), m_A() ? D::sig_off_on::value() : D::sig_on_off::value());
+ }
+
+ NETLIB_HANDLERI(G)
+ {
+ m_Y.set_tristate(m_G() ^ D::invert_g::value,
+ D::ts_off_on::value(), D::ts_on_off::value());
+ }
+
+ param_logic_t m_TE;
+ logic_input_t m_A;
+ logic_input_t m_G;
+ tristate_output_t m_Y;
+ nld_power_pins m_power_pins;
+ };
+
+ struct desc_74125 : public desc_base
+ {
+ using invert_g = desc_const<0>;
+ using ts_off_on = time_ns<11>;
+ using ts_on_off = time_ns<13>;
+ using sig_off_on = time_ns<8>;
+ using sig_on_off = time_ns<12>;
+ };
+
+ struct desc_74126 : public desc_74125
+ {
+ using invert_g = desc_const<1>;
+ };
+
+ using NETLIB_NAME(74125) = NETLIB_NAME(74125_base)<desc_74125>;
+ using NETLIB_NAME(74126) = NETLIB_NAME(74125_base)<desc_74126>;
+
+ NETLIB_DEVICE_IMPL(74125, "TTL_74125_GATE", "")
+ NETLIB_DEVICE_IMPL(74126, "TTL_74126_GATE", "")
+
+} // namespace netlist::devices