add comments on TestIssuer TestRunner

diff --git a/src/soc/simple/test/test_issuer.py b/src/soc/simple/test/test_issuer.py
index 3b1fa4e76f6cde734a1a0523721e46eb95b5c494..ebc529fcada9f0a3b60d2fee463890f477955f21 100644 (file)
--- a/src/soc/simple/test/test_issuer.py
+++ b/src/soc/simple/test/test_issuer.py
@@ -10,6 +10,12 @@ related bugs:
 
 import unittest
 import sys
+
+# here is the logic which takes test cases and "executes" them.
+# in this instance (TestRunner) its job is to instantiate both
+# a Libre-SOC nmigen-based HDL instance and an ISACaller python
+# simulator.  it's also responsible for performing the single
+# step and comparison.
 from soc.simple.test.test_runner import TestRunner
 
 # test with ALU data and Logical data