22re44

较简单的8PCSLED流水灯

main: mov p1,#0f5h
      lcall delay
      mov p1,#0fah
      lcall delay
ljmp main
delay:
    mov r7,#0ffh
d1: mov r6,#0ffh
d2: djnz r6,d2
    djnz r7,d1
    ret
    end