diff --git a/src/xenia/cpu/frontend/testing/instr_vpkpx.s b/src/xenia/cpu/frontend/testing/instr_vpkpx.s
new file mode 100644
index 000000000..32ef665ad
--- /dev/null
+++ b/src/xenia/cpu/frontend/testing/instr_vpkpx.s
@@ -0,0 +1,9 @@
+#vpkpx isn't implemented yet
+#test_vpkpx_0:
+#  #_ REGISTER_IN v3 [00101820, 01283038, 00404850, 01586068]
+#  #_ REGISTER_IN v4 [01707880, 00889098, 01A0A8B0, 00B8C0C8]
+#  vpkpx v5, v3, v4
+#  blr
+#  #_ REGISTER_OUT v3 [00101820, 01283038, 00404850, 01586068]
+#  #_ REGISTER_OUT v4 [01707880, 00889098, 01A0A8B0, 00B8C0C8]
+#  #_ REGISTER_OUT v5 [086494C7, 212AAD8D, B9F04653, D2B65F19]