#define RXDB 0x21 /* console receiver data buffer */
#define TXCS 0x22 /* console transmitter control and status */
#define TXDB 0x23 /* console transmitter data buffer */
#define RXDB 0x21 /* console receiver data buffer */
#define TXCS 0x22 /* console transmitter control and status */
#define TXDB 0x23 /* console transmitter data buffer */