From: Dmitry Selyutin <dmitry.selyutin@3mdeb.com>
Date: Thu, 19 Aug 2021 15:46:06 +0000 (+0000)
Subject: test_caller_bcd: mention reference implementation
X-Git-Tag: xlen-bcd~114
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0dc9075b95910eca00316d38178b0b885b4daa7f;p=openpower-isa.git

test_caller_bcd: mention reference implementation
---

diff --git a/src/openpower/decoder/isa/test_caller_bcd.py b/src/openpower/decoder/isa/test_caller_bcd.py
index 12b00b55..5cf3f2ef 100644
--- a/src/openpower/decoder/isa/test_caller_bcd.py
+++ b/src/openpower/decoder/isa/test_caller_bcd.py
@@ -319,6 +319,8 @@ class BCDTestCase(FHDLTestCase):
         self.run_tst("cbcdtd", mapping)
 
     def test_addg6s(self):
+        # Reference implementation for addg6s, adopted to Python.
+        # https://github.com/antonblanchard/microwatt/blob/master/execute1.vhdl
         def addg6s(a, b):
             def bits(value, bits):
                 lsb = [((value >> bit) & 1) for bit in range(bits, -1, -1)]