tty.h

Variables

partab            X

Macros

ASLEEP            X
BUSY              X
CARR_ON           X
CEOT              X
CERASE            X
CINTR             X
CKILL             X
CQUIT             X
CRDELAY           X
CRMOD             X
DONE              X
ECHO              X
EVENP             X
HUPCL             X
IENABLE           X
ISOPEN            X
LCASE             X
NLDELAY           X
ODDP              X
RAW               X
SSTART            X
TBDELAY           X
TIMEOUT           X
TTHIWAT           X
TTIPRI            X
TTLOWAT           X
TTOPRI            X
TTYHOG            X
VTDELAY           X
WOPEN             X
XTABS             X

struct's

clist             X
tty               X

   1: /*
   2:  * A clist structure is the head
   3:  * of a linked list queue of characters.
   4:  * The characters are stored in 4-word
   5:  * blocks containing a link and 6 characters.
   6:  * The routines getc and putc (m45.s or m40.s)
   7:  * manipulate these structures.
   8:  */
   9: struct clist
  10: {
  11:     int c_cc;       /* character count */
  12:     int c_cf;       /* pointer to first block */
  13:     int c_cl;       /* pointer to last block */
  14: };
  15: 
  16: /*
  17:  * A tty structure is needed for
  18:  * each UNIX character device that
  19:  * is used for normal terminal IO.
  20:  * The routines in tty.c handle the
  21:  * common code associated with
  22:  * these structures.
  23:  * The definition and device dependent
  24:  * code is in each driver. (kl.c dc.c dh.c)
  25:  */
  26: struct tty
  27: {
  28:     struct  clist t_rawq;   /* input chars right off device */
  29:     struct  clist t_canq;   /* input chars after erase and kill */
  30:     struct  clist t_outq;   /* output list to device */
  31:     int t_flags;    /* mode, settable by stty call */
  32:     int *t_addr;    /* device address (register or startup fcn) */
  33:     char    t_delct;    /* number of delimiters in raw q */
  34:     char    t_col;      /* printing column of device */
  35:     char    t_erase;    /* erase character */
  36:     char    t_kill;     /* kill character */
  37:     char    t_state;    /* internal state, not visible externally */
  38:     char    t_char;     /* character temporary */
  39:     int t_speeds;   /* output+input line speed */
  40:     int t_dev;      /* device name */
  41: };
  42: 
  43: char partab[];          /* ASCII table: parity, character class */
  44: 
  45: #define TTIPRI  10
  46: #define TTOPRI  20
  47: 
  48: #define CERASE  '#'     /* default special characters */
  49: #define CEOT    004
  50: #define CKILL   '@'
  51: #define CQUIT   034     /* FS, cntl shift L */
  52: #define CINTR   0177        /* DEL */
  53: 
  54: /* limits */
  55: #define TTHIWAT 50
  56: #define TTLOWAT 30
  57: #define TTYHOG  256
  58: 
  59: /* modes */
  60: #define HUPCL   01
  61: #define XTABS   02
  62: #define LCASE   04
  63: #define ECHO    010
  64: #define CRMOD   020
  65: #define RAW 040
  66: #define ODDP    0100
  67: #define EVENP   0200
  68: #define NLDELAY 001400
  69: #define TBDELAY 006000
  70: #define CRDELAY 030000
  71: #define VTDELAY 040000
  72: 
  73: /* Hardware bits */
  74: #define DONE    0200
  75: #define IENABLE 0100
  76: 
  77: /* Internal state bits */
  78: #define TIMEOUT 01      /* Delay timeout in progress */
  79: #define WOPEN   02      /* Waiting for open to complete */
  80: #define ISOPEN  04      /* Device is open */
  81: #define SSTART  010     /* Has special start routine at addr */
  82: #define CARR_ON 020     /* Software copy of carrier-present */
  83: #define BUSY    040     /* Output in progress */
  84: #define ASLEEP  0100        /* Wakeup when output done */