param.h
#define NBUF 15
#define NINODE 100
#define NFILE 200
#define NMOUNT 5
#define USIZE 8
#define MAXMEM 640
#define SSIZE 20
#define SINCR 20
#define NOFILE 10
#define CANBSIZ 256
#define CMAPSIZ 100
#define SMAPSIZ 100
#define NCALL 20
#define NMAJ 5 /* # block devices */
#define NDC11 12
#define NRK 4
#define NKL11 1
#define NDN 3
#define NPROC 50
#define NTEXT 40
#define NCLIST 100
#define NULL 0
#define LKS 0177546
#define ROOTDEV (0)
#define NODEV (-1)
#define SWAPDEV (0<<8)
#define SWPLO 1248
#define NSWAP 736
#define ROOTINO 1
#define DIRSIZ 14
#define PSWP -100
#define PINOD -90
#define PRIBIO -50
#define PWAIT 40
#define PSLEP 90
#define PUSER 100
#define NSIG 13
#define SIGHUP 1
#define SIGINT 2
#define SIGQIT 3
#define SIGINS 4
#define SIGTRC 5
#define SIGIOT 6
#define SIGEMT 7
#define SIGFPT 8
#define SIGKIL 9
#define SIGBUS 10
#define SIGSEG 11
#define SIGSYS 12