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Diffstat (limited to 'src/lib/netlist/devices/nld_74174.cpp')
-rw-r--r--src/lib/netlist/devices/nld_74174.cpp155
1 files changed, 68 insertions, 87 deletions
diff --git a/src/lib/netlist/devices/nld_74174.cpp b/src/lib/netlist/devices/nld_74174.cpp
index bb6ecc1510b..2789eef0bb5 100644
--- a/src/lib/netlist/devices/nld_74174.cpp
+++ b/src/lib/netlist/devices/nld_74174.cpp
@@ -1,122 +1,103 @@
-// license:GPL-2.0+
+// license:BSD-3-Clause
// copyright-holders:Couriersud
/*
* nld_74174.cpp
*
+ * DM74174: Hex D Flip-Flops with Clear
+ *
+ * +--------------+
+ * CLR |1 ++ 16| VCC
+ * Q1 |2 15| Q6
+ * D1 |3 14| D6
+ * D2 |4 74174 13| D5
+ * Q2 |5 12| Q5
+ * D3 |6 11| D4
+ * Q3 |7 10| Q4
+ * GND |8 9| CLK
+ * +--------------+
+ *
+ * +-----+-----+---++---+-----+
+ * | CLR | CLK | D || Q | QQ |
+ * +=====+=====+===++===+=====+
+ * | 0 | X | X || 0 | 1 |
+ * | 1 | R | 1 || 1 | 0 |
+ * | 1 | R | 0 || 0 | 1 |
+ * | 1 | 0 | X || Q0| Q0Q |
+ * +-----+-----+---++---+-----+
+ *
+ * Q0 The output logic level of Q before the indicated input conditions were established
+ *
+ * R: 0 -> 1
+ *
+ * Naming conventions follow National Semiconductor datasheet
+ *
*/
-#include "nld_74174.h"
-#include "netlist/nl_base.h"
-#include "nlid_system.h"
+#include "nl_base.h"
+
+namespace netlist::devices {
-namespace netlist
-{
-namespace devices
-{
NETLIB_OBJECT(74174)
{
NETLIB_CONSTRUCTOR(74174)
- , m_CLK(*this, "CLK", NETLIB_DELEGATE(74174, sub))
- , m_Q(*this, {{"Q1", "Q2", "Q3", "Q4", "Q5", "Q6"}})
+ , m_CLK(*this, "CLK", NETLIB_DELEGATE(clk))
+ , m_Q(*this, 1, "Q{}")
, m_clrq(*this, "m_clr", 0)
, m_data(*this, "m_data", 0)
- , m_D(*this, {{"D1", "D2", "D3", "D4", "D5", "D6"}})
- , m_CLRQ(*this, "CLRQ")
+ , m_D(*this, 1, "D{}", NETLIB_DELEGATE(other))
+ , m_CLRQ(*this, "CLRQ", NETLIB_DELEGATE(clrq))
, m_power_pins(*this)
{
}
- NETLIB_RESETI();
- NETLIB_UPDATEI();
+ NETLIB_RESETI()
+ {
+ m_CLK.set_state(logic_t::STATE_INP_LH);
+ m_clrq = 0;
+ m_data = 0xFF;
+ }
+
+ private:
+ NETLIB_HANDLERI(clrq)
+ {
+ m_clrq = m_CLRQ();
+ if (!m_clrq)
+ {
+ m_data = 0;
+ m_Q.push(m_data, NLTIME_FROM_NS(40));
+ m_CLK.inactivate();
+ }
+ else
+ m_CLK.activate_lh();
+ }
+
+ NETLIB_HANDLERI(other)
+ {
+ m_data = m_D();
+ if (m_clrq)
+ m_CLK.activate_lh();
+ }
- NETLIB_HANDLERI(sub)
+ NETLIB_HANDLERI(clk)
{
if (m_clrq)
{
- for (std::size_t i=0; i<6; i++)
- {
- netlist_sig_t d = (m_data >> i) & 1;
- m_Q[i].push(d, NLTIME_FROM_NS(25));
- }
+ m_Q.push(m_data, NLTIME_FROM_NS(25));
m_CLK.inactivate();
}
}
- protected:
logic_input_t m_CLK;
object_array_t<logic_output_t, 6> m_Q;
state_var<netlist_sig_t> m_clrq;
- state_var<unsigned> m_data;
+ state_var<netlist_sig_t> m_data;
object_array_t<logic_input_t, 6> m_D;
logic_input_t m_CLRQ;
nld_power_pins m_power_pins;
};
- NETLIB_OBJECT_DERIVED(74174_dip, 74174)
- {
- NETLIB_CONSTRUCTOR_DERIVED(74174_dip, 74174)
- {
- register_subalias("1", m_CLRQ);
- register_subalias("9", m_CLK);
-
- register_subalias("3", m_D[0]);
- register_subalias("2", m_Q[0]);
-
- register_subalias("4", m_D[1]);
- register_subalias("5", m_Q[1]);
-
- register_subalias("6", m_D[2]);
- register_subalias("7", m_Q[2]);
-
- register_subalias("11", m_D[3]);
- register_subalias("10", m_Q[3]);
-
- register_subalias("13", m_D[4]);
- register_subalias("12", m_Q[4]);
-
- register_subalias("14", m_D[5]);
- register_subalias("15", m_Q[5]);
-
- register_subalias("8", "GND");
- register_subalias("16", "VCC");
-
- }
- };
-
- NETLIB_UPDATE(74174)
- {
- uint_fast8_t d = 0;
- for (std::size_t i=0; i<6; i++)
- {
- d |= (m_D[i]() << i);
- }
- m_clrq = m_CLRQ();
- if (!m_clrq)
- {
- for (std::size_t i=0; i<6; i++)
- {
- m_Q[i].push(0, NLTIME_FROM_NS(40));
- }
- m_data = 0;
- } else if (d != m_data)
- {
- m_data = d;
- m_CLK.activate_lh();
- }
- }
-
-
- NETLIB_RESET(74174)
- {
- m_CLK.set_state(logic_t::STATE_INP_LH);
- m_clrq = 0;
- m_data = 0xFF;
- }
-
- NETLIB_DEVICE_IMPL(74174, "TTL_74174", "+CLK,+D1,+D2,+D3,+D4,+D5,+D6,+CLRQ,@VCC,@GND")
- NETLIB_DEVICE_IMPL(74174_dip,"TTL_74174_DIP", "")
+ NETLIB_DEVICE_IMPL(74174, "TTL_74174", "+CLK,+D1,+D2,+D3,+D4,+D5,+D6,+CLRQ,@VCC,@GND")
- } //namespace devices
-} // namespace netlist
+} // namespace netlist::devices