通信接收.asm

电子时钟的单片机设计

        org     0000h
        ljmp    main
        ;org     0023h
;sub1:   ajmp    sub2
        org     0030h
main:   mov     tmod,#20h
        mov     tl1,#0f3h
        mov     th1,#0f3h
        setb    ea
        clr     et1
        clr     es
        anl     PCON,#7FH
        SETB    TR1
        MOV     SCON,#70H
await1: jnb     ri,await1
        clr     ri
        mov     a,sbuf
        lcall   xianshi
        setb    es
        ljmp    l1
xianshi:mov     r7,a
        clr     p1.0
        ;mov     p1,#0f1h
        mov     a,r7
        mov     dptr,#tab1
        movc    a,@a+dptr
        mov     p0,a
        ret
tab1:   db 3fh,06h,5bh,4fh
      ;  0   ,1
        db 66h,6dh,7dh,07h
      ;  5
l1:     nop
        end