【正文】 MINADJ：ACALL DEL10MS CLR C MOV A，MIN INC A DA A CJNE A，60H，X1 CLR AX1： MOV MIN ，AACALL DIS ACALL DEL 200MS SETB JNB ，MIN_ADJ AJMP BEGINHOUR_ADJ：ACALL DEL 10MS CLR C MOV A，HOUR INC A DA A CJNE A，24H，X3 CLR AX3： MOV HOUR，A ACALL DIS ACALL DEL200MSX2： SETB JNB ，HOUR_ADJ AJMP BEGIN；* * * * * CONVERT* * * * CONV：MOV A，DI_DA CJNE A，14H，DONE MOV DIDA，00H MOV A，SEC ADD A，01H DA A MOV SEC，A CJNE A，60H，DONE MOV SEC，00H MOV A，MIN ADD A，01H DA A MOV MIN，A CJNE A，60H，DONE MOV MIN，00H MOV A，HOUR ADD A，01H DA A MOV HOUR，A CJNE A，24H，DONE MOV HOUR，00HDONE：RET；* * * * *DISPLAY TIME* * * * DIS：MOV A，11000100B LCALL WRITE_COM MOV A，HOUR SWAP A ANL A，0FH ADD A，30H LCALL WRITE_DATA MOV A，3AH LCALL WRITE_DATA MOV A，MIN SWAP A ANL A，0FH ADD A，30H LCALL WRITE_DATA MOV A，MIN ANL A，0FH ADD A，30H LCALL WRITE_DATA MOV A，3AH LCALL WRITE_DATA MOV A，SEC SWAP A ANL A，0FH ADD A，30H LCALL WRITE_DATA MOV A，SEC ANL A，0FH ADD A，30H LCALL WRITE_DATA RET；* *DISPLAY IN LCM* * *DISP：PUSH ACCDISP_LOOP：CLR A MOVC A，@A+DPTR JZ ENDDISP LCALL WRITE_DATA INC DPTR SJMP DISP_LOOPEND_DISP:POP ACC RET。* * * START LCM* * * INITIAL:MOV A,00111000B LCALL WRITE_COM MOV A,00001100B LCALL WRITE_COM MOV A,00000110B LCALL WRITE_COM RET。* * *BF* * * *CHECK_BUSH:PUSH ACCBUSY_LOOP:CLR E SETB R_W CLR RS SETB E MOV A,DB0_DB7 CLR E JB ,BUSY_LOOP POP ACC LCALL DEL RET。* * * WRITE INSTRUCTIONS IN LCM***WRITE_COM:LCALL CHECK_BUSY CLR E CLR RS CLR R_W SETB E MOV DB0_DB7,A CLR E RET。* * *WRITE DATA IN LCM* * * WRITE_DATA:LCALL CHECK_BUSY CLR E SETB RS CLR R_W SETB E MOV DB0_DB7,A CLR E RET。* * * CLR LCM* * * * CLS:MOV A,00000001B LCALL WRITE_COMRET。** * * DELAY * * * * DEL:MOV R6,5L1 : MOV R7,248 DJNZ R7,$ DJNZ R6,L1 RET。* * * DELAY 10MS* * * * DEL10MS:MOV R5,10HTX1 :MOV R4,0FFH DJNZ R4,$ DJNZ R5,TX1 RET。* * * DELAY 200MS* * * DEL200MS:MOV R3,14HTX2 :ACALL DEL10MS DJNZ R3,TX2 RET。** * * * STRING* * * * * LINE0:DB“——CHEN YANG CLOCK——”，00HLINE1：DB“”，00H EN