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diff --git a/openpower/sv/overview/discussion.mdwn b/openpower/sv/overview/discussion.mdwn
index 7c670a840f827aecc43d9b226acce0449165a01c..ca45a8515fc13ca0cff644bc5cf0a7bb3c51719c 100644 (file)
--- a/openpower/sv/overview/discussion.mdwn
+++ b/openpower/sv/overview/discussion.mdwn
@@ -221,3 +221,11 @@ also define Registers:
      ...
      B7 = b56 || .........                 ....  || b63
      RA = B0 || B1 || B2 || B3 || B4 || B5 || B6 || B7
+
+Further we may now also define half-words, words, and double-words,
+confirming the definition of registers (RA as the same example):
+
+     H0 = B0||B1, H1 = B2||B3, H2 = B4||B5, H3 = B6||B7
+     W0 = H0||H1, W1 = H2||H3
+     D0 = W0||W1
+     RA = D0