usr/src/slowsys/h/cons.h

/*
  VAX console interface registers
 */

#define RXCS_IE 0x40    /* receiver interrupt enable */
#define RXCS_DONE 0x80  /* receiver done */
#define RXDB_DATA 0xff  /* received character */
#define RXDB_ID 0xf00   /* channel id */
#define RXDB_ERR 0x80000000     /* receiver error */

#define TXCS_IE 0x40    /* transmitter interrupt enable */
#define TXCS_RDY 0x80   /* transmitter ready for next char */
#define TXDB_DATA 0xff  /* transmitter byte */
#define TXDB_ID 0xf00   /* channel id */