8051 Program – rom to ram

; copy data from rom to ram
	ORG 0H
	ROM_ADDR EQU 300H
	RAM_ADDR EQU 40H
	BYTE_COUNT EQU 10
MAIN :
	MOV DPTR,#ROM_ADDR
	MOV R0, #RAM_ADDR
	MOV R1, #BYTE_COUNT
	LCALL COPY
	SJMP MAIN
COPY:
	MOV R2, #0 ;clear counter
	MOV A, #0
loop:	MOVC A, @A+DPTR
	MOV @R0, A
	INC R0
	INC R2
	MOV A, R2
	DJNZ R1,loop
	RET
	ORG 300H
	DB 01H,02H,03H,04H,05H,06H,07H,08H,09H,0AH
	END

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