diff --git a/decoder/tests/run_pkt_decode_tests-ete.bash b/decoder/tests/run_pkt_decode_tests-ete.bash
index 509438e..c00631e 100755
--- a/decoder/tests/run_pkt_decode_tests-ete.bash
+++ b/decoder/tests/run_pkt_decode_tests-ete.bash
@@ -35,10 +35,20 @@
 # may change due to bugfix / enhancements) or assess the validity  of the trace output.
 #
 #################################################################################
+# Usage options:-
+# * default: run tests on binary + libs in ./bin/linux64/rel
+# run_pkt_decode_tests.bash
+#
+# * use installed opencsd libraries & program
+# run_pkt_decode_tests.bash use-installed
+#
+# * use supplied path for binary + libs (must have trailing /)
+# run_pkt_decode_tests.bash <custom>/<path>/
+#
 
 OUT_DIR=./results-ete
 SNAPSHOT_DIR=./snapshots-ete
-BIN_DIR=./bin/linux64/rel
+BIN_DIR=./bin/linux64/rel/
 
 # directories for tests using full decode
 declare -a test_dirs_decode=( "001-ack_test"
@@ -57,6 +67,7 @@
                               "tme_test"
                               "trace_file_cid_vmid"
                               "trace_file_vmid"
+                              "ts_marker"
                             )
 
 
@@ -71,19 +82,30 @@
 
 mkdir -p ${OUT_DIR}
 
-# === test the decode set ===
-export LD_LIBRARY_PATH=${BIN_DIR}/.
+if [ "$1" == "use-installed" ]; then
+    BIN_DIR=""
+elif [ "$1" != "" ]; then
+    BIN_DIR=$1
+fi
 
+echo "Tests using BIN_DIR = ${BIN_DIR}"
+
+if [ "${BIN_DIR}" != "" ]; then
+    export LD_LIBRARY_PATH=${BIN_DIR}.
+    echo "LD_LIBRARY_PATH set to ${BIN_DIR}"
+fi
+
+# === test the decode set ===
 for test_dir in "${test_dirs_decode[@]}"
 do
     echo "Testing $test_dir..."
-    ${BIN_DIR}/trc_pkt_lister -ss_dir "${SNAPSHOT_DIR}/$test_dir" -decode -logfilename "${OUT_DIR}/$test_dir.ppl"
+    ${BIN_DIR}trc_pkt_lister -ss_dir "${SNAPSHOT_DIR}/$test_dir" -decode -logfilename "${OUT_DIR}/$test_dir.ppl"
     echo "Done : Return $?"
 done
 
 for test_dir_n in "${test_dirs_decode_src_addr_opt[@]}"
 do
     echo "Testing with -src_addr_n  $test_dir_n..."
-    ${BIN_DIR}/trc_pkt_lister -ss_dir "${SNAPSHOT_DIR}/$test_dir_n" -decode -src_addr_n -logfilename "${OUT_DIR}/${test_dir_n}_src_addr_N.ppl"
+    ${BIN_DIR}trc_pkt_lister -ss_dir "${SNAPSHOT_DIR}/$test_dir_n" -decode -src_addr_n -logfilename "${OUT_DIR}/${test_dir_n}_src_addr_N.ppl"
     echo "Done : Return $?"
 done
diff --git a/decoder/tests/snapshots-ete/ts_marker/ETE_0_s1.ini b/decoder/tests/snapshots-ete/ts_marker/ETE_0_s1.ini
new file mode 100644
index 0000000..5c4e1af
--- /dev/null
+++ b/decoder/tests/snapshots-ete/ts_marker/ETE_0_s1.ini
@@ -0,0 +1,15 @@
+[device]
+name=ETE_0_s1
+class=trace_source
+type=ETE
+
+
+[regs]
+TRCCONFIGR=0x8801
+TRCTRACEIDR=0x1
+TRCDEVARCH=0x47715a13
+TRCIDR0=0x2881cea1
+TRCIDR1=0x4100fff0
+TRCIDR2=0xd0001088
+TRCIDR8=0x0
+
diff --git a/decoder/tests/snapshots-ete/ts_marker/bindir_64/OTHERS_exec b/decoder/tests/snapshots-ete/ts_marker/bindir_64/OTHERS_exec
new file mode 100644
index 0000000..384f5d7
--- /dev/null
+++ b/decoder/tests/snapshots-ete/ts_marker/bindir_64/OTHERS_exec
Binary files differ
diff --git a/decoder/tests/snapshots-ete/ts_marker/bindir_64/VAL_NON_DET_CODE_exec b/decoder/tests/snapshots-ete/ts_marker/bindir_64/VAL_NON_DET_CODE_exec
new file mode 100644
index 0000000..004a17c
--- /dev/null
+++ b/decoder/tests/snapshots-ete/ts_marker/bindir_64/VAL_NON_DET_CODE_exec
Binary files differ
diff --git a/decoder/tests/snapshots-ete/ts_marker/cpu_0.ini b/decoder/tests/snapshots-ete/ts_marker/cpu_0.ini
new file mode 100644
index 0000000..481a6e9
--- /dev/null
+++ b/decoder/tests/snapshots-ete/ts_marker/cpu_0.ini
@@ -0,0 +1,22 @@
+[device]
+name=cpu_0
+class=core
+type=ARM-AA64
+
+[regs]
+PC(size:64)=0x0
+SP(size:64)=0
+SCTLR_EL1=0x0
+CPSR=0x0
+
+
+[dump1]
+file=bindir_64/OTHERS_exec
+address=0x00060000
+length=0x67740
+
+[dump2]
+file=bindir_64/VAL_NON_DET_CODE_exec
+address=0x00010000
+length=0x204a0
+
diff --git a/decoder/tests/snapshots-ete/ts_marker/session1.bin b/decoder/tests/snapshots-ete/ts_marker/session1.bin
new file mode 100644
index 0000000..da3a425
--- /dev/null
+++ b/decoder/tests/snapshots-ete/ts_marker/session1.bin
Binary files differ
diff --git a/decoder/tests/snapshots-ete/ts_marker/snapshot.ini b/decoder/tests/snapshots-ete/ts_marker/snapshot.ini
new file mode 100644
index 0000000..fae7cd1
--- /dev/null
+++ b/decoder/tests/snapshots-ete/ts_marker/snapshot.ini
@@ -0,0 +1,11 @@
+[snapshot]
+version=1.0
+description=checker_metadata.ini
+
+[device_list]
+device0=cpu_0.ini
+device1=ETE_0_s1.ini
+
+[trace]
+metadata=trace.ini
+
diff --git a/decoder/tests/snapshots-ete/ts_marker/trace.ini b/decoder/tests/snapshots-ete/ts_marker/trace.ini
new file mode 100644
index 0000000..7e95dab
--- /dev/null
+++ b/decoder/tests/snapshots-ete/ts_marker/trace.ini
@@ -0,0 +1,15 @@
+[trace_buffers]
+buffers=buffer1
+
+[buffer1]
+name=ETB_1
+file=session1.bin
+format=source_data
+
+
+[source_buffers]
+ETE_0_s1=ETB_1
+
+[core_trace_sources]
+cpu_0=ETE_0_s1
+