电子钟汇编程序.doc

仿真图 汇编程序 ;T0产生50ms定时，中断20次即为1秒 ;T1产生10ms定时，动态显示6位数码管 ;T1定时扫描显示器接口 ;秒数值存20H、分值存21H、小时值存22H ;---------------------------------------------- ;伪指令 SECBUF EQU 20H MINBUF EQU 21H HORBUF EQU 22H WEIMA EQU 23H SET_LABEL EQU R4 ;--------------------------------------------- ORG 0000H SJMP MAIN ORG 0003H AJMP INTER0 ORG 000BH AJMP TIMER0 ORG 0013H AJMP INTER1 ORG 001BH AJMP TIMER1 ;--------------------------------------------------- ;主程序 ORG 0030H MAIN: MOV SP,#70H MOV SET_LABEL,#0 MOV DPTR,#TAB ACALL TIMER_INI ;定时器初始化 ACALL INTER_INI ;中断初始化 CLR A ;置时间初值00：00：00 MOV R2,#20 ;1s定时中断次数 MOV SECBUF,A MOV MINBUF,#59 MOV HORBUF,#23 SETB TR0 SETB TR1 LOOP1: INC R3 MOV A,SECBUF MOV B,#10 DIV AB MOVC A,@A+DPTR MOV P2,#0 MOV P1,A MOV WEIMA,#02H CJNE R4,#3,N12 CJNE R3,#128,N11 N11: JC N12 ANL WEIMA,#0 N12: MOV P2,WEIMA ACALL DELAY MOV A,B MOVC A,@A+DPTR MOV P2,#0 MOV P1,A MOV WEIMA,#01H CJNE R4,#3,N22 CJNE R3,#128,N21 N21: JC N22 ANL WEIMA,#0 N22: MOV P2,WEIMA ACALL DELAY MOV A,MINBUF MOV B,#10 DIV AB MOVC A,@A+DPTR MOV P2,#0 MOV P1,A MOV WEIMA,#10H CJNE R4,#2,N32 CJNE R3,#128,N31 N31: JC N32 ANL WEIMA,#0 N32: MOV P2,WEIMA ACALL DELAY MOV A,B MOVC A,@A+DPTR MOV P2,#0 MOV P1,A MOV WEIMA,#08H CJNE R4,#2,N42 CJNE R3,#128,N41 N41: JC N42 ANL WEIMA,#0 N42: MOV P2,WEIMA ACALL DELAY MOV A,HORBUF MOV B,#10 DIV AB MOVC A,@A+DPTR MOV P2,#0 MOV P1,A MOV WEIMA,#80H CJNE R4,#1,N52 CJNE R3,#128,N51 N51: JC N52 ANL WEIMA,#0 N52: MOV P2,WEIMA ACALL DELAY MOV A,B MOVC A,@A+DPTR MOV P2,#0 MOV P1,A MOV WEIMA,#40H CJNE R4,#1,N62 CJNE R3,#128,N61 N61: JC N62 ANL WEIMA,#0 N62: MOV P2,WEIMA ACALL DELAY MOV P2,#0 MOV P1,#0BFH MOV P2,#24H ACALL DELAY AJMP LOOP1 ;--------------------------------------------------- ;定时器初始化子程序 TIMER_INI: MOV TMOD,#11H ;T0方式1，T1方式1 MOV TH0,#3CH ;T0初值，50ms MOV TL0,#0B0H MOV TH1,#0FCH ;T1初值，10ms MOV TL1,#18H RET ;--------------------------------------------------- ;中断初始化子程序