BBN-V6/h/xty.h
/*
* 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 */
};
/*
* Cursor position structure.
* This is one of the two structures currently
* accessible via modtty.
*/
struct cursor
{
char t_col; /* Current column, for delay, tab-simul, etc. */
char t_line; /* Current line (after last read) */
};
/*
* Terminal characteristics.
* This is the other structure currently accessible via modtty.
*/
struct modes
{
char t_width; /* Screen width -- 0 means infinite */
char t_len; /* Screen length -- 0 means infinite */
char t_pagelen; /* Stop output when cursor.t_line >= pagelen */
char t_term; /* Terminal type -- see TY defines */
/* Physical properties */
char t_speeds; /* One speed in each nybble */
char t_pflags; /* Physical properties -- see T defines */
/* Input properties */
char t_erase;
char t_kill;
char t_intr;
char t_quit;
char t_esc;
char t_eot;
char t_replay;
int t_breaks; /* Break character classes */
int t_iflags; /* Input flags */
int t_oflags; /* Output properties */
};
/*
* 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
{
struct clist t_inq; /* Input queue */
struct clist t_outq; /* Output queue */
int *t_addr; /* Device address */
int t_pgrp; /* Process group */
char *t_itp; /* Await pointer */
int t_state; /* Internal state bits */
char t_delct; /* Count of delimiters in t_inq */
char t_char; /* Character temporary */
struct cursor t_pos; /* Cursor position */
struct modes t_modes; /* Terminal modes */
};
/* Internal state bits */
#define TS_TIMEOUT 00001 /* Delay timeout in progress */
#define TS_WOPEN 00002 /* Waiting for open to complete */
#define TS_ISOPEN 00004 /* Device is open */
#define TS_SSTART 00010 /* Has special start routine at t_addr */
#define TS_CARR_ON 00020 /* Software copy of carrier-present */
#define TS_BUSY 00040 /* Output in progress */
#define TS_ASLEEP 00100 /* Wakeup when output done */
#define TSO_XOFFHNG 00200 /* For output ctrl: driver received XOFF */
#define TSI_XOFFHNG 00400 /* For input ctrl: driver sent XOFF */
/* Terminal types */
#define TY_UNKNOWN 0
#define TY_PRINT 1 /* Printing terminal */
#define TY_CRT 2 /* Glass TTY */
#define TY_VT52 3
#define TY_VT100 4
#define TY_ANN_ARBOR 5
/* Speeds */
#define T_INPUT_SPEED 0017
#define T_OUTPUT_SPEED 0360
#define L_SPEED 4
#define B_9600 13
/* Physical properties */
#define T_PARITY 001
# define T_EVEN 000
# define T_ODD 001
#define T_PENABLE 002
#define T_SB 004
#define T_HUPCL 010
/* Break character class definitions */
#define TB_UPPER 0000001
#define TB_LOWER 0000002
#define TB_DIGIT 0000004
#define TB_FORMAT 0000010
#define TB_LF 0000020
#define TB_SPACE 0000040
#define TB_ESC 0000100
#define TB_DEL 0000200
#define TB_CTRL 0000400
#define TB_TERM 0001000
#define TB_BAL 0002000
#define TB_OTHER 0004000
#define TB_UNDER 0010000
#define TB_CR 0020000
#define TB_NON_ASCII 0100000
/* Input flags */
#define TI_CLR_MSB 000001
#define TI_CRMOD 000002
#define TI_XONXOFF 000004
#define TI_BRK_ECHO 000010
#define TI_NONBRK_ECHO 000020
#define TI_TAB_ECHO 000040
#define TI_CR_ECHO 000100
#define TI_DEFER_ECHO 000200
#define TI_ONECASE 000400
#define TI_CRT 001000
#define TI_LOCAL_ECHO 002000
/* Output properties */
#define TO_PAD 000001
#define TO_AUTONL 000002
#define TO_XONXOFF 000004
#define TO_XTABS 000010
#define TO_TAB_DELAY 000060
# define TO_TAB_37 000020
# define TO_TAB_SPARE 000040
# define TO_TAB_EXTRA 000060
#define TO_CR_DELAY 000300
# define TO_CR_TN300 000100
# define TO_CR_TI700 000200
# define TO_CR_SPARE 000300
#define TO_VT_DELAY 000400
#define TO_CRMOD 001000
#define TO_ONECASE 002000
#define TO_NL_DELAY 014000
# define TO_NL_ANN_ARBOR 0000
# define TO_NL_37 004000
# define TO_NL_VT05 010000
# define TO_NL_ECD 014000
#define T_DELIM 0376 /* Put after each break char */
#define T_USR_DELIM -2 /* If user input char == T_DELIM, mapped to this */
/* default special characters */
#define CERASE '\b' /* Backspace */
#define CEOT '\004' /* Ctrl-D */
#define CKILL '@'
#define CQUIT '\034' /* FS, cntl shift L */
#define CINTR '\177' /* DEL */
#define CXON '\021' /* cntl Q */
#define CXOFF '\023' /* cntl S */
/* ASCII table: parity, character type */
char partab[];
#define P_PARITY 0200
#define P_CTYPE 0077
# define P_PRINTING 0
# define P_CTRL 1
# define P_BS 2
# define P_LF 3
# define P_HT 4
# define P_VTFF 5
# define P_CR 6
/* defines for use with modtty system call */
#define MOD_GET 000000
#define MOD_SET 000001
#define MOD_MODES 000000
#define MOD_CURSOR 000002
/* Priorities */
#define TTIPRI 10
#define TTOPRI 20
/* limits */
#define TTHIWAT 150
#define TTLOWAT 30
#define TTYHOG 256
#define TTYWARN 64
/*
* If TI_XONXOFF set, XOFF sent when t_inq char count reaches TTYHOG - TTYWARN;
* XON sent when output level gets down to TTYWARN.
*/
/* Hardware CSR bits */
#define DONE 0200
#define IENABLE 0100
/* -------------------------- E X P E R ---------------------- */
#define cinit xcinit
#define flushtty flushxty
#define gtty gxty
#define sgtty sgxty
#define stty sxty
#define ttread xtread
#define ttrstrt xtrstrt
#define ttstart xtstart
#define ttwrite xtwrite
#define ttycap xtycap
#define ttyinput xtyinput
#define ttyopen xtyopen
#define ttyoutput xtyoutput
#define ttystty xtystty
#define wflushtty wflushxty
#define maptab xmaptab