sys/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