8051 Program – ram to ram

; copy data from one location to another
	ORG 0H
	SRC_ADDR EQU 40H
	DEST_ADDR EQU 60H
	BYTE_COUNT EQU 10
MAIN :
	MOV R0,#SRC_ADDR
	MOV R7,#BYTE_COUNT
	MOV A, #0
memfill:	MOV @R0,A
	INC A
	INC R0
	DJNZ R7,memfill
	MOV R0,#SRC_ADDR
	MOV R1,#DEST_ADDR
	MOV R7,#BYTE_COUNT
	LCALL COPY
	SJMP MAIN
COPY:
	MOV A, #0
loop:	MOV A, @R0
	MOV @R1, A
	INC R0
	INC R1
	DJNZ R7, loop
	RET
	END

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Related topics:
8051 Program - clear register banks   |   8051 Program - clear bit memory   |   8051 Program - clear stack memory   |   8051 Program - rom to ram   |   8051 Program - external ram to internal ram   |   8051 Program - internal ram to external ram   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

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List of topics: 8051

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