SRI-NOSC/s1/login/tty.h
#
/* Revision - New handshake handler */
/*
* A clist structure is the head
* of a linked list queue of characters.
* The characters are stored in 4-word
* blocks containing a link and 6 characters.
* The routines getc and putc (m45.s or m40.s)
* manipulate these structures.
*/
struct clist
{
int c_cc; /* character count */
int c_cf; /* pointer to first block */
int c_cl; /* pointer to last block */
};
/*
* A tty structure is needed for
* each UNIX character device that
* is used for normal terminal IO.
* The routines in tty.c handle the
* common code associated with
* these structures.
* The definition and device dependent
* code is in each driver. (kl.c dc.c dh.c)
*/
struct tty
{
/* These variables are (hopefully) untouchable by the ttymode system
* call. The total number of un-hackable bytes should be specified in
* the compiler control line for FIXOFS, below.
*/
struct clist t_canq; /* buffer for ttyread */
struct clist t_outq; /* output list to device */
int *t_addr; /* device address (register or startup fcn) */
int t_dev; /* device name */
int t_llf; /* ptr to last linefeed in t_canq */
int t_state; /* internal state, not visible externally */
char t_char; /* character temporary */
char t_acnt; /* count of characters sent */
int t_pgrp; /* process group name */
#ifdef DNTTY
int t_dnflgs; /* DN: TTY flags specific to DN hacks */
int t_ioct; /* DN: I/O cnt for catching idle lines */
#endif
#define TFIXOFS 28 /* Fixed offset from base of tty structure of
* first user-hackable parameter, for ttymod */
/* User hackable info. Any additional parameters to the rear, please. */
/* name byte # Description */
int t_speeds; /* 0,1 input (low) + output (high) speeds */
char t_erase; /* 2 erase char */
char t_kill; /* 3 kill char */
int t_flags; /* 4,5 mode. Bytes 0-5 settable by stty call */
int t_flag2; /* 6,7 additional flags */
char t_flag4; /* 8 additional bits */
char t_cano; /* 9 canonical terminal type */
char t_clin; /* 10 current line of device */
char t_col; /* 11 printing column of device */
char t_llen; /* 12 line length */
char t_psize; /* 13 page size */
char t_quit; /* 14 quit char (^B) */
char t_intr; /* 15 interrupt char (^Q) */
char t_EOT; /* 16 end_of_file char (^D) */
char t_cntla; /* 17 special interrupt char (^A) */
char t_atime; /* 18 timeout in 60ths of seconds */
char t_asize; /* 19 number of character per ACK */
char t_enq; /* 20 ENQ character */
char t_ack; /* 21 ACK character */
char t_esc; /* 22 Escape character */
char t_alwat; /* 23 Low water mark for ACK */
char t_delpos; /* 24 Position of first typed char */
char t_freeze; /* 25 freeze character (^F) */
char t_thaw; /* 26 thaw character (^T) */
char t_hold; /* 27 hold character (^S) */
char t_release; /* 28 release character (^Q) */
char t_retype; /* 29 retype line (^R) */
char t_silent; /* 30 silence output (^S) */
char t_clear; /* 31 clear screen (^L) */
#define TMAXBN 31 /* Maximum allowable byte number for ttymod */
};
/*char partab[]; /* ASCII table: parity, character class */
#define TTIPRI 10
#define TTOPRI 20
#define CERASE 0177 /* default special characters */
#define CEOT 032 /* ^Z */
#define CKILL ('U' & 037)
#define CQUIT ('B' & 037) /* FS, cntl shift L */
#define CINTR ('C' & 037) /* ^C */
#define CSPEC ('A' & 037) /* Special interrupt, ^A */
#define CACK ('F' & 037)
#define CENQ ('D' & 037)
#define CESC ('_' & 037)
#define CFREEZE ('S' & 037)
#define CTHAW ('Q' & 037)
#define CHOLD ('S' & 037)
#define CREL ('Q' & 037)
#define CRETYPE ('R' & 037)
#define CCLEAR ('L' & 037)
#define CSILENT ('O' & 037)
#define CESC1 '1'
#define CESC2 '2'
/* limits */
#define TTHIWAT 50
#define TTLOWAT 30
#define TTYHOG 256
#define TTACK 50
/* modes */
#define HUPCL 01
#define XTABS 02
#define LCASE 04
#define ECHO 010
#define CRMOD 020
#define RAW 040
#define ODDP 0100
#define EVENP 0200
#define NLDELAY 001400
#define TBDELAY 006000
#define CRDELAY 030000
#define VTDELAY 040000
#define DUMC 0100000 /* KLH: Don't Use Modem Control. */
/* Speeds (mostly for DH11) */
#define B0 00 /* 0 baud, for turning lines off */
#define B50 01
#define B75 02
#define B110 03 /* 110 baud */
#define B134 04 /* 134.5 baud */
#define B150 05
#define B200 06
#define B300 07
#define B600 010
#define B1200 011
#define B1800 012
#define B2400 013
#define B4800 014
#define B9600 015
#define BEXTA 016
#define BEXTB 017
/* Hardware bits */
#define DONE 0200
#define IENABLE 0100
/* Internal state bits */
#define TIMEOUT 01 /* Delay timeout in progress */
#define WOPEN 02 /* Waiting for open to complete */
#define ISOPEN 04 /* Device is open */
#define SSTART 010 /* Has special start routine at addr */
#define CARR_ON 020 /* Software copy of carrier-present */
#define BUSY 040 /* Output in progress */
#define ASLEEP 0100 /* Wakeup when output done */
#define ERMODE 0200 /* Erase mode, deleting chars */
#define ACKWAIT 0400 /* timeout is pending */
#define ESCRCV 01000 /* set when escape has been recieved */
#define ENQRCV 02000 /* ENQ recieved by ttyinput */
#define FROZEN 04000 /* tty output is frozen (by ^F) */
#define HELD 010000 /* tty input is held */
#ifdef DNTTY
/* DN-specific TTY flags, in t_dnflgs */
#define BAUDOT 01 /* When set, TTY is baudot tty. */
#define FIGS 02 /* Set during FIGS mode, off during LETS */
#define CTS 04 /* Copy of DM hardware CTS */
#define TMORTS 010 /* Set during RTS-drop timeout */
#define TMOCTS 020 /* Set during CTS-on timeout wait */
#define LICCR 040 /* Last input char was CR */
#define LICLF 0100 /* Last input char was LF */
#endif
/* ttymode parameters */
#define TFLUSH 0020000 /* Request to flush buffer first */
#define TCNTL 0140000 /* Control bits in a ttycommand */
#define TBYTNUM 0017400 /* Byte number " */
#define TBITS 0000377 /* Argument bits " */
#define TCLEAR 0040000 /* Clear control command in a ttycommand */
#define TSET 0100000 /* Set " */
#define TREPLAC 0140000 /* Replace " */
#define TGET 0 /* Get " */
/* t_tflag2 flags */
#define SILENT 01 /* Silences tty */
#define LITIN 02 /* 8 bit input */
#define LITOUT 04 /* 8 bit output */
#define MORE 010 /* Enables "MORE" processing */
#define EEI 020 /* Explicitly Enable Interrupts
* (allows ^Q,^B,^A in raw mode */
#define RACK 040
#define WACK 0100
#define SECRX 0200 /* don't transmit if SECRX is 0 */
#define WHOLD 0400 /* transmit t_hold and t_release */
/* when the input queue grows/shrinks */
/* Canonical terminal types */
# define TC_PRINTING 0
# define TC_VT52 1
# define TC_ARDS 2
# define TC_SARDS 3
# define TC_GSI 4 /* courrier wheel */
# define TC_GSIE 5 /* elite wheel */
# define TC_GSIP 6 /* pica wheel */
# define TC_GSIQ 7
# define TC_GSIQE 8
# define TC_GSIQP 9
# define TC_GT40 10 /* assumed to be running the VT52 scroller */
# define TC_TERM 11 /* the chris termanal */
# define TC_CRT 12 /* cathode-ray decwriter */
# define TC_AJ 13 /* Anderson-Jacobson 832 (Qume) */
# define TC_AJE 14