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diff --git a/openpower/sv/av_opcodes.mdwn b/openpower/sv/av_opcodes.mdwn
index 11ff00f93607c6b43d7505eece4097e4e5a22a65..6f279e850fa2814c3d182f8e1ca1fe2a6ba71015 100644 (file)
--- a/openpower/sv/av_opcodes.mdwn
+++ b/openpower/sv/av_opcodes.mdwn
@@ -10,6 +10,14 @@ Links
 
 * [[vpu]]
 
+# Summary
+
+In-advance, the summary of operations that need to be added is:
+
+| instruction  | pseudocode               |
+| average-add. | result = (src1 + src2 + 1) >> 1 |
+| abs-diff     | result = abs (src1-src2) |
+
 # Audio
 
 The fundamental principle for these instructions is: