$MODP89V51RD2

    XDATA
buf1: DS  48
buf2: DS  48
    CODE
bmove:
    mov   dptr,#buf1
    inc   auxr1
    mov   dptr,#buf2
    inc   auxr2
    mov   r2,#49
bmoveX1:
    movx  a,@dptr
    inc   auxr1
    movx  @dptr,a
    inc   auxr1
    djnz  r2,bmoveX1
    ret