Disable BG before a new test

applications/unb1_reorder/tb/python/tc_unb1_reorder.py

@@ -163,8 +163,11 @@ if __name__ == "__main__":
             ss_list.append(i + j*c_frame_size)
             
     if c_ena_pre_transpose:
-        ss.write_selects(ss_list) 
-       
+        ss.write_selects(ss_list)
+        
+    # Disable the blockgenerator before writing new data
+    bg.write_disable()
+        
     ###############################################################################
     #
     # Create stimuli for the BG