sem [		ldsb	ldsh	ldsw	ldub	lduh	lduw	ldx
		ldsba	ldsha	ldswa	lduba	lduha	lduwa	ldxa	] {
    set_op(new_inst,Op,3 ,1);
    Rx_src(new_inst,rs1); set_src2(new_inst,i,rs2,simm13) ;
    Rx_dest(new_inst,rd);
    new_inst.align = align?cvt(uchar);
} where Op in [	164 	165 	166 	167 	168 	169 	170 
		164 	165 	166 	167 	168 	169 	170 	],
     align in [	0	1	2	0	1	2	3
		0	1	2	0	1	2	3	];