8051 Program – memory compare

; memory compare
; find out how many equal bytes between
; two memory blocks 10h to 20h and 20h to 30h
	ORG 0H
	MOV R0, #10H	; mem1 start address
	MOV R1, #20H	; mem2 start address
	MOV R2, #0AH	; no of locations to compare
	MOV R7, #00H	; no of locations with same content
NEXT:	MOV A, @R0
	MOV B, A
	MOV A, @R1
	CJNE A, B, NOMATCH
	INC R7
NOMATCH:	INC R0
	INC R1
	DJNZ R2, NEXT
	END

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Related topics:
8051 Program - move block of data without overlap   |   8051 Program - move block of data with overlap   |   8051 Program - move block of data external memory   |   8051 Program - exchange content of two ram locations   |   8051 Program - exchange block of data external memory   |   8051 Program - swap nibbles   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

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List of topics: 8051

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