@HEX:			; hexadecimal output
			; of bytes in [?@Byte]
	PUSH	BX 
	PUSH	CX 
	PUSH	DX 
	XOR	AX, AX
	MOV	AL, [?@Byte]
	MOV	CX, 2 
@0:	XOR	DX, DX 
	MOV	BX, 10h 
	DIV	BX 
	ADD	DL, 30h 
	CMP	DL, 39h 
	JBE	@1 
	ADD	DL, 7 
@1:	PUSH	DX 
	LOOP	@0 
	MOV	CX, 2 
@2:	POP	DX
	MOV	AH, 2 
	INT	21h	; display char
	LOOP	@2 
	POP	DX 
	POP	CX
	POP	BX 
	RET