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diff --git a/openpower/sv/cr_ops.mdwn b/openpower/sv/cr_ops.mdwn
index f0293f43d2c93585ec480eece18bf63f2d14ac5e..a3e3c7a890e399459f8c88b49a3d44f0f3354d17 100644 (file)
--- a/openpower/sv/cr_ops.mdwn
+++ b/openpower/sv/cr_ops.mdwn
@@ -105,7 +105,9 @@ Examples of the former type:
 * crand, cror, crnor. These all are 5-bit (BA, BB, BT). The bit
   to be tested against `inv` is the one selected by `BT`
 * mcrf. This has only 3-bit (BF, BFA). In order to select the
-  bit to be tested, the alternative FFirst encoding must be used.
+  bit to be tested, the alternative encoding must be used.
+  With `CRbit` coming from the SVP64 RM bits 22-23 the bit
+  of BF to be tested is identified.
 
 This limits sv.mcrf in that it may not use the `VLi` (VL inclusive)
 Mode. This is unfortunste but unavoidable due to encoding pressure