typedef struct UartData UartData;
struct UartData
{
	int	smcno;	/* smc number: 0 or 1 */
	SMC	*smc;
	Uartsmc	*usmc;
	char	*rxbuf;
	char	*txbuf;
	BD*	rxb;
	BD*	txb;
	int	initialized;
	int	enabled;
} uartdata[Nuart];

int baudgen(int);
void smcsetup(Uart *uart);