MEM(ea, 4) <- (RS)[XLEN-32:XLEN-1]
RA <- EA
+Description:
+
+ Let the effective address (EA) be the sum (RA)+ D.
+ (RS)[32:63] are stored into the word in storage addressed
+ by EA.
+
+ EA is placed into register RA.
+
+ If RA=0, the instruction form is invalid.
+
Special Registers Altered:
None