led.asm

这是我最近一段时间编的一些弹片机的小程序,上面有大量的注释,一般都会看懂

org 000h
jmp 40h
org 40h
main:
    ;acall pro1
    ;acall pro2
    acall pro3
    ajmp main
pro1:
     mov p0,#06h
     setb p2.0
     acall yanshi
     clr p2.0
     setb p2.1
     acall yanshi
     clr p2.1
     setb p2.2
     acall yanshi
     clr p2.2
     setb p2.3
     acall yanshi
     clr p2.3
     setb p2.4
     acall yanshi
     clr p2.4
     setb p2.5
     acall yanshi
     setb p2.6
     clr p2.5
     acall yanshi
     clr p2.6
     setb p2.7
     acall yanshi
     clr p2.7
 ret
 pro2:
      setb p2.0
      mov p0,#06h
      acall yanshi
      clr p2.0
      setb p2.1
      mov p0,#5bh
      acall yanshi
      clr p2.1
      setb p2.2
      mov p0,#4fh
      acall yanshi
      clr p2.2
      setb p2.3
      mov p0,#66h
      acall yanshi
      clr p2.3
      setb p2.4
      mov p0,#6dh
      acall yanshi
      clr p2.4
      setb p2.5
      mov p0,#7dh
      acall yanshi
      setb p2.6
      clr p2.5
      mov p0,#07h
      acall yanshi
      clr p2.6
      setb p2.7
      mov p0,#7fh
      acall yanshi
      clr p2.7
 ret
pro3: mov r7,#00h
      mov r4,#3
pro31:mov dptr,#tab
      mov r5,#80h  ;pian xuan
dir1: mov r0,#0
      mov r6,#8
next: mov p2,r5
      mov a,r0
      add a,r7
      movc a,@a+dptr
      mov p0,a
      acall yanshi
      inc r0
      mov a,r5
      rr a
      mov r5,a
      djnz r6,next ;8ge xian shi
      inc r7
      djnz r4,pro31;kongzhi cishu 3
      ret 
yanshi:mov tmod,#10h
        mov th1,#67h
        mov tl1,#67h
        setb tr1
        ret
tab:db 06h,5bh,4fh,66h,6dh,7dh,07h,7fh