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diff --git a/openpower/sv/vector_ops/discussion.mdwn b/openpower/sv/vector_ops/discussion.mdwn
index 3b6c6fd74a6f94b97f74d6e1be2d96d0e9383aaa..2241840c28e29cd442947b58a4aa58c353cfa24e 100644 (file)
--- a/openpower/sv/vector_ops/discussion.mdwn
+++ b/openpower/sv/vector_ops/discussion.mdwn
@@ -8,11 +8,10 @@ needs some work though
 
 ```
 def bmask(mode, RA, RB=None, zero=False):
-    mask = [1] * XLEN
-    mask = RB if RB is not None else 0xffffffffffffffff
-    ra <- RA & mask
-    if mode[0] then a1 <- ra else a1 <-~ra
-    mode2 = (mode >> 1) & 0b11
+    if _RB = 0 then mask <- [1] * XLEN else mask = (RB)
+    a1 <- (RA) & mask
+    if mode[1] then a1 <- ~ra
+    mode2 <- mode[2:3]
     if mode2 = 0 then a2 <- -ra
     if mode2 = 1 then a2 <- ra-1
     if mode2 = 2 then a2 <- ra+1
@@ -22,8 +21,8 @@ def bmask(mode, RA, RB=None, zero=False):
     mode3 <- mode[3:4]
     if mode3 = 0 then result <- a1 | a2
     if mode3 = 1 then result <- a1 & a2
-    if mode3 = 2 result <- a1 ^ a2
-    if mode3 = 3 result <- UNDEFINED
+    if mode3 = 2 then result <- a1 ^ a2
+    if mode3 = 3 then result <- UNDEFINED
     result <- result & mask
     if L = 1 then
         result <- result | (RA & ~mask)