; bcd up/down counters ORG 0H SJMP 30H ORG 30H MOV A,#00 UP: MOV P0,A ACALL DELAY ADD A, #01 DA A CJNE A,#100,UP DOWN: MOV P0,A ACALL DELAY ADD A,#99h DA A CJNE A,#0,DOWN SJMP UP DELAY: MOV r1,#0FFH DECR1: MOV r2,#0FFH DECR: MOV r3,#0FFH DJNZ r3,$ DJNZ r2,DECR RET END
Related topics:
8051 Program - up counter 8bit | 8051 Program - down counter 8bit | 8051 Program - bcd up counter 8bit | 8051 Program - bcd down counter 8bit | 8051 Program - hex up and down counters | 8051 Program - memory subroutines | 8051 Program - math subroutines | 8051 Program - conversion subroutines
List of topics: 8051
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