CLO		; Close opened windows
	MOV AL,0	; Initilize AL
	MOV CL,C0	; Initilize VDU counter
IN:			; I/O loop start label
	CMP CL,00	; Check that VDU is not full. If full, jump to end
	JZ END		; -^- ;
	IN 00		; Input character from keyboard, store in AL
	CMP AL,7A	; Is the character 'z'? If yes, jump to end
	JZ END		; -^- ;
	CMP AL,5A	; Is the character 'Z'? If yes, jump to end
	JZ END		; -^- ;
	MOV [CL],AL	; Move character from AL to VDU location at CL
	INC CL		; Move to next VDU location
	JMP IN		; Move to top of I/O loop
END:			; End label
	END		; End program