ADD	R0,R1		; Before execution 	R1 = H'7FFFFFFF, R1 = H'00000001
				; After execution 	R1 = H'80000000
	ADD	#H'01,R2	; Before execution 	R2 = H'00000000
				; After execution	R3 = H'FFFFFFFF
	ADD	#H'FE,R3	; Before execution	R3 = H'00000001
				; After execution	R3 = H'FFFFFFFF