;; 
	;; Author: Bill Slough
	;;
	;; MAT 3670
	;;
	;; Example assembly language program with a simple loop
	;;
	;; Displays a line of N asterisks, where N is a given value in memory.
	;;

	.ORIG x3000		; specify the "origin"; i.e., where to load in memory

	LD 	R1,N		; 
	NOT 	R1,R1		;
	ADD 	R1,R1,#1	; R1 = -N 
	
	AND 	R2,R2,#0	; R2 = 0;
LOOP    ADD	R3,R2,R1	; while (R2 < N)
	BRzp	ELOOP		;
	LD	R0,STAR		;   R0 = '*'
	OUT			;   write('*')
	ADD	R2,R2,#1	;   R2 = R2 + 1
	BRnzp	LOOP		; end while
ELOOP	
	LEA	R0,NEWLN	;
	PUTS			; write('\n')
	
STOP	HALT			;

N	.FILL  	6        	; how many characters to display?
STAR	.FILL  	x2A		; the character to display
NEWLN	.STRINGZ "\n"
	.END