; DEMONSTRATION OF STACK
;
.org 0000h
		LD	HL,	0		; Clear HL.	
		ADD	HL,	SP		; Load Stack Pointer.
		LD	SP, 0080h	; Initialize Stack.
		CALL SR1		; Call subroutine.
		LD	SP,	HL		; Restore old SP.
LOOP:	JP	LOOP		; Loop here for BP.
SR1:	CALL SR2		; Second level.
		RET
SR2:	CALL SR3		; Third level.
		RET
SR3:	RET				; Fourth level.


.end