usr/sys/seg.h

/*
 * KT-11 addresses and bits.
 */

#define UISD    0177600         /* first user I-space descriptor register */
#define UISA    0177640         /* first user I-space address register */
#define UDSA    0177660         /* first user D-space address register */
#define RO      02              /* access abilities */
#define WO      04
#define RW      06
#define ED      010             /* extend direction */

/*
 * structure used to address
 * a sequence of integers.
 */
struct
{
        int     r[];
};
int     *ka6;           /* 11/40 KISA6; 11/45 KDSA6 */

/*
 * address to access 11/70 UNIBUS map
 */
#define UBMAP   0170200