diff --git a/html/ws.html b/html/ws.html
index b3b0441..56edd32 100644
--- a/html/ws.html
+++ b/html/ws.html
@@ -11,8 +11,9 @@ li { font-family: Courier; list-style-type: '>';}
 pre { margin-top:0; margin-bottom:0;}
 .term { background-color:black; color:white; font-weight:bold;padding-top:10px; padding-bottom:10px; max-height:400px; overflow: scroll;}
 span.timestamp { font-family: monospace; white-space: pre;width: 50px;}
+span.value_z { background-color: darkblue;}
 span.value_1 { background-color: green;}
-span.value_0 { background-color: blue;}
+span.value_0 { background-color: yellow;}
 span.value_x { background-color: red;}
 </style>
 	</head>
diff --git a/riscv.sc/src/sysc/core_complex.cpp b/riscv.sc/src/sysc/core_complex.cpp
index 36acdd3..a3f48c8 100644
--- a/riscv.sc/src/sysc/core_complex.cpp
+++ b/riscv.sc/src/sysc/core_complex.cpp
@@ -29,7 +29,7 @@
 // POSSIBILITY OF SUCH DAMAGE.
 //
 // Contributors:
-//       eyck@minres.com - initial API and implementation
+//       eyck@minres.com - initial implementation
 //
 //
 ////////////////////////////////////////////////////////////////////////////////
@@ -279,6 +279,7 @@ void core_complex::disass_output(uint64_t pc, const std::string instr_str) {
     tr_handle.record_attribute("INSTR", instr_str);
     tr_handle.record_attribute("MODE", lvl[cpu->get_mode()]);
     tr_handle.record_attribute("MSTATUS", cpu->get_state().mstatus.st.value);
+    tr_handle.record_attribute("LTIME_START", quantum_keeper.get_current_time().value()/1000);
 #endif
 }
 
@@ -326,7 +327,9 @@ bool core_complex::read_mem(uint64_t addr, unsigned length, uint8_t *const data,
         auto delay{quantum_keeper.get_local_time()};
 #ifdef WITH_SCV
         if(m_db!=nullptr && tr_handle.is_valid()){
-            if(is_fetch && tr_handle.is_active()) tr_handle.end_transaction();
+            if(is_fetch && tr_handle.is_active()){
+                tr_handle.end_transaction();
+            }
             auto preExt = new scv4tlm::tlm_recording_extension(tr_handle, this);
             gp.set_extension(preExt);
         }
@@ -371,6 +374,12 @@ bool core_complex::write_mem(uint64_t addr, unsigned length, const uint8_t *cons
         gp.set_data_length(length);
         gp.set_streaming_width(length);
         auto delay{quantum_keeper.get_local_time()};
+#ifdef WITH_SCV
+        if(m_db!=nullptr && tr_handle.is_valid()){
+            auto preExt = new scv4tlm::tlm_recording_extension(tr_handle, this);
+            gp.set_extension(preExt);
+        }
+#endif
         initiator->b_transport(gp, delay);
         quantum_keeper.set(delay);
         LOG(TRACE) << "write_mem(0x" << std::hex << addr << ") : " << data;