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

	.ORIG x3000   ; Start program at x3000
	LEA R1 0xFF   ; R1 <- x3100 (PC+0xFF)
	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 x-1 ; Decrement R2
	BRnzp LOOP    ; Goto x3004
DONE	HALT          ; HALT
	.END