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Diffstat (limited to 'src/lib/netlist/devices/nld_dm9314.cpp')
-rw-r--r--src/lib/netlist/devices/nld_dm9314.cpp156
1 files changed, 74 insertions, 82 deletions
diff --git a/src/lib/netlist/devices/nld_dm9314.cpp b/src/lib/netlist/devices/nld_dm9314.cpp
index e193fd08f46..e8241af09de 100644
--- a/src/lib/netlist/devices/nld_dm9314.cpp
+++ b/src/lib/netlist/devices/nld_dm9314.cpp
@@ -3,24 +3,33 @@
/*
* nld_dm9314.cpp
*
+ * DM9314: 4-Bit Latches
+ *
+ * +--------------+
+ * /E |1 ++ 16| VCC
+ * /S0 |2 15| Q0
+ * D0 |3 14| /S1
+ * D1 |4 DM9314 13| Q1
+ * /S2 |5 12| Q2
+ * D2 |6 11| /S3
+ * D3 |7 10| Q3
+ * GND |8 9| /MR
+ * +--------------+
+ *
*/
-#include "nld_dm9314.h"
-#include "netlist/nl_base.h"
-#include "nlid_system.h"
+#include "nl_base.h"
+
+namespace netlist::devices {
-namespace netlist
-{
- namespace devices
- {
NETLIB_OBJECT(9314)
{
NETLIB_CONSTRUCTOR(9314)
- , m_EQ(*this, "EQ")
- , m_MRQ(*this, "MRQ")
- , m_SQ(*this, {{"S0Q", "S1Q", "S2Q", "S3Q"}})
- , m_D(*this, {{"D0", "D1", "D2", "D3"}})
- , m_Q(*this, {{"Q0", "Q1", "Q2", "Q3"}})
+ , m_EQ(*this, "EQ", NETLIB_DELEGATE(inputs))
+ , m_MRQ(*this, "MRQ", NETLIB_DELEGATE(inputs))
+ , m_SQ(*this, {"S0Q", "S1Q", "S2Q", "S3Q"}, NETLIB_DELEGATE(inputs))
+ , m_D(*this, {"D0", "D1", "D2", "D3"}, NETLIB_DELEGATE(inputs))
+ , m_Q(*this, {"Q0", "Q1", "Q2", "Q3"})
, m_last_EQ(*this, "m_last_EQ", 0)
, m_last_MRQ(*this, "m_last_MRQ", 0)
, m_last_SQ(*this, "m_last_SQ", 0)
@@ -30,10 +39,59 @@ namespace netlist
{
}
- NETLIB_RESETI();
- NETLIB_UPDATEI();
+ private:
+
+ NETLIB_RESETI()
+ {
+ m_last_MRQ = 0;
+ m_last_EQ = 0;
+ m_last_SQ = 0;
+ m_last_D = 0;
+ m_last_Q = 0;
+ }
+
+ NETLIB_HANDLERI(inputs)
+ {
+ netlist_time delay = NLTIME_FROM_NS(24); //FIXME!
+ if (!m_MRQ())
+ {
+ /* Reset! */
+ for (std::size_t i=0; i<4; i++)
+ m_Q[i].push(0, delay);
+ } else {
+ for (std::size_t i=0; i<4; i++)
+ {
+ if (m_SQ[i]())
+ {
+ /* R-S Mode */
+ // RS mode is just an "extension of regular D mode"
+ // The way RS mode works is that D and S bar go high (keeps old value)
+ // S bar going low sets output high
+ // D going low and S bar high sets output low
+ // S bar going low AND D going low sets output low (D takes precedence)
+ if (!m_EQ())
+ {
+ if (!m_D[i]()) // if D low and SQ high we clear the bit
+ {
+ m_last_Q &= ~(1 << i);
+ m_Q[i].push((m_last_Q & (1<<i))>>i, delay);
+ }
+ }
+ }
+ else
+ {
+ /* D Mode */
+ if (!m_EQ())
+ {
+ m_Q[i].push(m_D[i](), delay);
+ m_last_Q &= ~(1 << i);
+ m_last_Q |= (m_D[i]() << i);
+ }
+ }
+ }
+ }
+ }
- protected:
logic_input_t m_EQ;
logic_input_t m_MRQ;
object_array_t<logic_input_t, 4> m_SQ;
@@ -48,72 +106,6 @@ namespace netlist
nld_power_pins m_power_pins;
};
- NETLIB_OBJECT_DERIVED(9314_dip, 9314)
- {
- NETLIB_CONSTRUCTOR_DERIVED(9314_dip, 9314)
- {
- register_subalias("1", m_EQ);
- register_subalias("2", m_SQ[0]);
- register_subalias("3", m_D[0]);
- register_subalias("4", m_D[1]);
- register_subalias("5", m_SQ[2]);
- register_subalias("6", m_D[2]);
- register_subalias("7", m_D[3]);
- register_subalias("8", "GND");
-
- register_subalias("9", m_MRQ);
- register_subalias("10", m_Q[3]);
- register_subalias("11", m_SQ[3]);
- register_subalias("12", m_Q[2]);
- register_subalias("13", m_Q[1]);
- register_subalias("14", m_SQ[1]);
- register_subalias("15", m_Q[0]);
- register_subalias("16", "VCC");
-
- }
- };
-
- NETLIB_RESET(9314)
- {
- m_last_MRQ = 0;
- m_last_EQ = 0;
- m_last_SQ = 0;
- m_last_D = 0;
- m_last_Q = 0;
- }
-
- NETLIB_UPDATE(9314)
- {
- netlist_time delay = NLTIME_FROM_NS(24); //FIXME!
- if (!m_MRQ())
- {
- /* Reset! */
- for (std::size_t i=0; i<4; i++)
- m_Q[i].push(0, delay);
- } else {
- for (std::size_t i=0; i<4; i++)
- {
- if (m_SQ[i]())
- {
- /* R-S Mode */
- // FIXME: R-S mode is not yet implemented!
- }
- else
- {
- /* D Mode */
- if (!m_EQ())
- {
- m_Q[i].push(m_D[i](), delay);
- m_last_Q &= ~(1 << i);
- m_last_Q |= (m_D[i]() << i);
- }
- }
- }
- }
- }
-
NETLIB_DEVICE_IMPL(9314, "TTL_9314", "+EQ,+MRQ,+S0Q,+S1Q,+S2Q,+S3Q,+D0,+D1,+D2,+D3,@VCC,@GND")
- NETLIB_DEVICE_IMPL(9314_dip, "TTL_9314_DIP", "")
- } //namespace devices
-} // namespace netlist
+} // namespace netlist::devices