8051 Program – exchange block of data external memory

; exchange block of data
; external memory
	ORG 0H
START:
	MOV R0,#10H	;Size of an array
	MOV 82H,#00H	;DPL=00h
LOOP:	MOV 83H,#80H	;DPH=80h
	MOVX A,@DPTR	;Src data to acc
	MOV R1,A
	MOV 83H,#90H	;DPH=90h
	MOVX A,@DPTR
	XCH A,R1
	MOVX @DPTR,A
	MOV 83H,#80H	;DPH=80h
	MOV A,R1
	MOVX @DPTR,A
	INC DPTR
	DJNZ R0,LOOP
	SJMP $
	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 - memory compare   |   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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