单时钟完成多点分别计时的实现和应用

p;    DE8
DEAL8:                 JNB       2CH.7,FINISH
                 INC       57H
                        MOV       A,57H
                        CJNE      A,#20,FINISH
                        CLR       2CH.7
                        LCALL     OUT01
                        MOV       57H,#00H

     &nb

sp;                     
FINISH:                 MOV       A,2CH
                        CJNE      A,#00H,TUI
                       
                     
                        SETB      TR0;SETB      TR0
                 POP       ACC
      

《单时钟完成多点分别计时的实现和应用(第9页)》