.ORIG x3000  ;start the program at location x3000
	AND R1, R1, #0   ;clear R1, to be used for the running sum
	AND R4, R4, #0 ;clear R4, to be used as a counter
	ADD R4, R4, #4 ; initialize R4 with #4, the number of times to add
	LEA R2, place ; load starting address of array of numbers
loop	LDR R3, R2, #0 ; load next number to be added
	ADD R2, R2, #1 ; increment pointer
	ADD R1, R1, R3 ; number to running sum
	ADD R4, R4, #-1 ; decrement counter
	BRp loop ; repeat if counter is not yet zero
	ADD R0, R1, #0; move sum to R0
	HALT

place	.FILL x0002
	.FILL x0004
	.FILL x0008
	.FILL x000F
	
	.END