单时钟完成多点分别计时的实现和应用

DE1:                    JNB       2AH.0,DEAL1
DE2:                    JNB       2AH.1,DEAL2
DE3:                    JNB       2AH.2,DEAL3
DE4:                    JNB       2AH.3,DEAL4I
DE5:                    JNB       2AH.4,DEAL5I
DE6:                    JNB       2AH.5,DEAL6I
DE7:                    JNB       2AH.6,DEAL7I
DE8:                    JNB       2AH.7,DEAL8I    
                    LJMP      FINISH
                     
DEAL4I:                 LJMP      DEAL4                       
DEAL5I:                 LJMP      DEAL5
DEAL6I:                 LJMP      DEAL6                       
DEAL7I:                 LJMP      DEAL7 
DEAL8I:                 LJMP      DEAL8                       
DEAL1:                  JNB       2CH.0,DE2
                        INC       50H
                        MOV       A,50H
                        CJNE      A,#20,DE2
                        CLR       2CH.0                       
                        LCALL     OUT01
                        mov       50h,#00h
                        LJMP      DE2                       
DEAL2:                  JNB       2CH.1,DE3
                        INC       51H
                        MOV       A,51H
                        CJNE      A,#20,DE3                       
                        CLR       2CH.1                       
                        LCALL     OUT01
                        MOV       51H,#00H
                        LJMP      DE3  
 DEAL3:                JNB       2CH.2,DE4
                 INC       52H
                        MOV       A,52H
                        CJNE      A,#20,DE4
                        CLR       2CH.2
                        LCALL     OUT01
                        MOV       52H,#00H
                        LJMP      DE4
DEAL4:                JNB       2CH.3,DE5I

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