8051 Assembly Address Based 8 bit Multiplication program

                ORG 0000H

                MOV DPTR, #0030H

                MOVX A, @DPTR

                MOV B, A

                INC DPTR

                MOVX A, @DPTR

                MUL A, B

                MOV DPTR, #0090H

                MOVX @DPTR, A

                MOV PCON, #02H