Added English language description for add, subtract form instruction

diff --git a/openpower/isa/fixedarith.mdwn b/openpower/isa/fixedarith.mdwn
index 818a28b28498e4b97002ed0b54f6622f1289e6bd..bd911944e03aaae7e161d5e6f8ad6feed97b0af9 100644 (file)
--- a/openpower/isa/fixedarith.mdwn
+++ b/openpower/isa/fixedarith.mdwn
@@ -72,6 +72,10 @@ Pseudo-code:
 
     RT <- (RA) + (RB)
 
+Description:
+
+    The sum (RA) + (RB) is placed into register RT.
+
 Special Registers Altered:
 
     CR0                     (if Rc=1)
@@ -90,6 +94,10 @@ Pseudo-code:
 
     RT <- ¬(RA) + (RB) + 1
 
+Description:
+
+    The sum ¬(RA) + (RB) +1 is placed into register RT.
+
 Special Registers Altered:
 
     CR0                     (if Rc=1)