/*
	* parameters
	*/
#define NPROC	20
#define NINODE	50
#define NMOUNT	4
#define NFILE	60
#define NOPEN	16
#define NSIG	16
#define MINRUN	2	/* minimum run time before swapout */
#define MAXMEM	0xffff	/* maximum process size */
#define MAXSEG	256	/* max 4K memory segments, not inc. kernel */
#define USERSEG 3	/* segment 3. See user.c and malloc.c */

	/*
	 * Priorities
	 */
#define PRIMEM	100
#define PRISWAP 90
#define PRIBIO	90
#define PRINOD	80
#define SIGPRI	80	/* below here, signal can wake a sleeper */
#define PRIPIPE 70	/* rdwri.c */
#define PRITTI	60	/* tty.c */
#define PRITTO	60	/* tty.c */
#define PRIWAIT 55	/* fork.c */
#define PRISYS	50	/* system.c */
#define PRIUSER 40	/* sleep.c, system.c */

       /*
	* constants
	*/
#define NULL	0
#define YES	1
#define NO	0
#define READ	0
#define WRITE	1
#define UPDATE	2
#define ERROR	-1
#define OK	0
#define ERRBIT	1	/* 8080 carry flag */
#define BYTMASK 0377
#define HERTZ	8

       /*
	* signals
	*/
#define SIGHUP  1
#define SIGINT	2	/* tty.c */
#define SIGQUIT 3	/* tty.c */
#define SIGILL	4	/* trap.c */
#define SIGBACK 6	/* tty.c */
#define SIGTINT 7	/* tty.c */
#define SIGKILL 9	/* sig.c */
#define SIGMEM	11	/* malloc.c */
#define SIGBAD	12	/* system.c */
#define SIGPIPE 13	/* rdwri.c */
#define SIGALRM 14	/* time.c */

       /*
	* macros
	*/
#define min(x, y)	(((x) < (y))? (x) : (y))
#define max(x, y)	(((x) < (y))? (y) : (x))
#define until(x)	while(!(x))
#define forever		for(;;)

	/*
	 * Types
	 */
#define fast		register
#define UINT		unsigned int
#define uns		unsigned int
#define UCHAR		unsigned char
#define ULONG		unsigned long