seg.h

来自「UNIX版本6的源代码」· C头文件 代码 · 共 27 行

/*
 * 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