Added English Language description for sthx instruction

diff --git a/openpower/isa/fixedstore.mdwn b/openpower/isa/fixedstore.mdwn
index 7390a24be7c728bb66e072d02e2b1e9789525608..65a261bdf47f3bcb15c0656069beaca6f0dc18fa 100644 (file)
--- a/openpower/isa/fixedstore.mdwn
+++ b/openpower/isa/fixedstore.mdwn
@@ -144,6 +144,12 @@ Pseudo-code:
     EA <- b + (RB)
     MEM(EA, 2) <- (RS)[XLEN-16:XLEN-1]
 
+Description:
+
+Let the effective address (EA) be the sum
+(RA|0)+ (RB). RS[48:63] are stored into the halfword in
+storage addressed by EA.
+
 Special Registers Altered:
 
     None