diff --git a/litescope/software/driver/analyzer.py b/litescope/software/driver/analyzer.py
index 37979b4..e78eaa0 100644
--- a/litescope/software/driver/analyzer.py
+++ b/litescope/software/driver/analyzer.py
@@ -32,7 +32,10 @@ class LiteScopeAnalyzerDriver:
         self.group = 0
         self.data = DumpData(self.data_width)
 
-        # disable trigger and storage
+        self.offset = 0
+        self.length = None
+
+        # Disable trigger and storage
         self.trigger_enable.write(0)
         self.storage_enable.write(0)
 
@@ -104,6 +107,8 @@ class LiteScopeAnalyzerDriver:
             length = self.depth
         assert offset < self.depth
         assert length <= self.depth
+        self.offset = offset
+        self.length = length
         if self.debug:
             print("[running]...")
         self.storage_offset.write(offset)
@@ -124,7 +129,7 @@ class LiteScopeAnalyzerDriver:
         length = self.storage_length.read()
         for position in range(1, length + 1):
             if self.debug:
-                sys.stdout.write("|{}>{}| {}%\r".format('=' * (20*position//length),
+                sys.stdout.write("[{}>{}] {}%\r".format('=' * (20*position//length),
                                                         ' ' * (20-20*position//length),
                                                         100*position//length))
                 sys.stdout.flush()
@@ -153,6 +158,8 @@ class LiteScopeAnalyzerDriver:
             dump.add_from_layout(self.layouts[self.group], self.data)
         else:
             dump.add_from_layout_flatten(self.layouts[self.group], self.data)
+        dump.add_scope_clk()
+        dump.add_scope_trig(self.offset)
         dump.write(filename)
 
     def get_instant_value(self, group, name):
diff --git a/litescope/software/dump/common.py b/litescope/software/dump/common.py
index d07dd7a..c408b2c 100644
--- a/litescope/software/dump/common.py
+++ b/litescope/software/dump/common.py
@@ -77,7 +77,6 @@ class Dump:
             values2x = [values[i//2] for i in range(len(values)*2)]
             self.add(DumpVariable(name, sample_width, values2x))
             offset += sample_width
-        self.add(DumpVariable("scope_clk", 1, [1, 0]*(len(self)//2)))
 
     def add_from_layout_flatten(self, layout, variable):
         offset = 0
@@ -85,14 +84,17 @@ class Dump:
             # The samples from the logic analyzer end up in an array of size sample size
             # and have n (number of channel) bits. The following does a bit slice on the array
             # elements (implemented above)
-            values = variable[offset:offset+sample_width]
+            values         = variable[offset:offset+sample_width]
             values_flatten = [values[i//sample_width] >> (i % sample_width ) & 1 for i in range(len(values)*sample_width)]
             self.add(DumpVariable(name, 1, values_flatten))
             offset += sample_width
-        # the clock.. might need some more love here. the clock pattern probably should be sample_width wide
-        # e.g. 11110000 and not 10101010
+
+    def add_scope_clk(self):
         self.add(DumpVariable("scope_clk", 1, [1, 0]*(len(self)//2)))
 
+    def add_scope_trig(self, offset):
+        self.add(DumpVariable("scope_trig", 1, [0]*offset + [1]*(len(self)-offset)))
+
     def __len__(self):
         l = 0
         for variable in self.variables: