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diff --git a/src/lib/netlist/devices/nld_7497.h b/src/lib/netlist/devices/nld_7497.h
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+// license:GPL-2.0+
+// copyright-holders:Sergey Svishchev
+/*
+ * nld_7497.h
+ *
+ * SN7497: Synchronous 6-Bit Binary Rate Multiplier
+ *
+ * +--------------+
+ * B1 |1 16| VCC
+ * B4 |2 15| B3
+ * B5 |3 14| B2
+ * B0 |4 7497 13| CLR
+ * Z |5 12| UNITY/CAS
+ * Y |6 11| ENin (EN)
+ * ENout |7 10| STRB
+ * GND |8 9| CLK
+ * +--------------+
+ *
+ * Naming conventions follow TI datasheet
+ *
+ * The counter is enabled when the clear, strobe, and enable inputs are low.
+ *
+ * When the rate input is binary 0 (all rate inputs low), Z remains high [and Y low].
+ *
+ * The unity/cascade input, when connected to the clock input, passes
+ * clock frequency (inverted) to the Y output when the rate input/decoding
+ * gates are inhibited by the strobe.
+ *
+ * When CLR is H, states of CLK and STRB can affect Y and Z. Default are
+ * Y L, Z H, ENout H.
+ *
+ * Unity/cascade is used to inhibit output Y (UNITY L -> Y H)
+ */
+
+#ifndef NLD_7497_H_
+#define NLD_7497_H_
+
+#include "netlist/nl_setup.h"
+
+#define TTL_7497(name, cCLK, cSTRB, cEN, cUNITY, cCLR, cB0, cB1, cB2, cB3, cB4, cB5) \
+ NET_REGISTER_DEV(TTL_7497, name) \
+ NET_CONNECT(name, CLK, cCLK) \
+ NET_CONNECT(name, STRBQ, cSTRB) \
+ NET_CONNECT(name, ENQ, cEN) \
+ NET_CONNECT(name, UNITYQ,cUNITY) \
+ NET_CONNECT(name, CLR, cCLR) \
+ NET_CONNECT(name, B0, cB0) \
+ NET_CONNECT(name, B1, cB1) \
+ NET_CONNECT(name, B2, cB2) \
+ NET_CONNECT(name, B3, cB3) \
+ NET_CONNECT(name, B4, cB4) \
+ NET_CONNECT(name, B5, cB5)
+
+#define TTL_7497_DIP(name) \
+ NET_REGISTER_DEV(TTL_7497_DIP, name)
+
+#endif /* NLD_7497_H_ */