RT <- ([0] * (XLEN-16)) || MEM(EA, 2)
RA <- EA
-Description:Let the effective address (EA) be the sum
-(RA|0)+ (RB). The halfword in storage addressed by
-EA is loaded into RT 48:63. RT 0:47 are set to 0.
+Description:Let the effective address (EA) be the sum (RA)+ D. The
+halfword in storage addressed by EA is loaded into
+RT48:63. RT 0:47 are set to 0.
+EA is placed into register RA.
+If RA=0 or RA=RT, the instruction form is invalid.
Special Registers Altered: