; Example 1 -- Compute the sum of 12 integers
; This file contains the instructions (in assembly format)
; The file containing the data is ex1_data.asm

	.ORIG x3000   ; Start program at x3000
	LD R1, ADDR   ; R1 <- x3100 
	AND R3, R3, x0  ; R3 <- 0
	AND R2, R2, x0  ; R2 <- 0
	ADD R2, R2, xC  ; R2 <- 12
LOOP	BRz DONE      ; If Z, goto x300A (PC+5)
	LDR R4, R1, x0  ; Load next value to R4
	ADD R3, R3, R4  ; Add to R4
	ADD R1, R1, x1  ; Increment R1
	ADD R2, R2, -1 ; Decrement R2
	BRnzp LOOP    ; Goto x3004
DONE	HALT          ; HALT
ADDR  .FILL x3100
      .END