VR/LOAD  RD+RD', RP
         RD+RD', RP, d_size
         RD+RD', RP, d_size, p_p_inc_dec-3
         RD+RD', RP, d_size, p_p_inc_dec-3, relative-1
         RD+RD', RP, d_size, p_p_inc_dec-3, relative-1, R2 or p_immediate
         RD+RD', RP, d_size, p_p_inc_dec-3, relative-1, R2 or p_immediate, R3 or shift_immediate


