8051 Program – count 0 and 1 in a byte

; count 0 and 1 in a byte
; input in A
; number of 1 in R1
; number of 0 in R2
	ORG 0H
	DATA_ADDR EQU 4000H
MAIN:
	MOV R1,#0
	MOV R7,#8	;count=08
	MOV A,#97H
AGAIN:	RLC A
	JNC NEXT	;check for CY
	INC R1	;if CY=1 add to count
NEXT:	DJNZ R7,AGAIN
	MOV A, #8
	CLR C
	SUBB A,R1
	MOV R2,A
	END

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List of topics: 8051

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