85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
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* A clist structure is the head
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* of a linked list queue of characters.
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* The characters are stored in 4-word
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* blocks containing a link and 6 characters.
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* The routines getc and putc (m45.s or m40.s)
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* manipulate these structures.
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*/
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struct clist
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{
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int c_cc; /* character count */
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int c_cf; /* pointer to first block */
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int c_cl; /* pointer to last block */
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};
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/*
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* A tty structure is needed for
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* each UNIX character device that
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* is used for normal terminal IO.
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* The routines in tty.c handle the
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* common code associated with
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* these structures.
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* The definition and device dependent
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* code is in each driver. (kl.c dc.c dh.c)
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*/
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struct tty
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{
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struct clist t_rawq; /* input chars right off device */
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struct clist t_canq; /* input chars after erase and kill */
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struct clist t_outq; /* output list to device */
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int t_flags; /* mode, settable by stty call */
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int *t_addr; /* device address (register or startup fcn) */
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char t_delct; /* number of delimiters in raw q */
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char t_col; /* printing column of device */
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char t_erase; /* erase character */
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char t_kill; /* kill character */
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char t_state; /* internal state, not visible externally */
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char t_char; /* character temporary */
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int t_speeds; /* output+input line speed */
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int t_dev; /* device name */
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};
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char partab[]; /* ASCII table: parity, character class */
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#define TTIPRI 10
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#define TTOPRI 20
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#define CERASE '#' /* default special characters */
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#define CEOT 004
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#define CKILL '@'
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#define CQUIT 034 /* FS, cntl shift L */
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#define CINTR 0177 /* DEL */
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/* limits */
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#define TTHIWAT 50
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#define TTLOWAT 30
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#define TTYHOG 256
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/* modes */
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#define HUPCL 01
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#define XTABS 02
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#define LCASE 04
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#define ECHO 010
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#define CRMOD 020
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#define RAW 040
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#define ODDP 0100
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#define EVENP 0200
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#define NLDELAY 001400
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#define TBDELAY 006000
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#define CRDELAY 030000
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#define VTDELAY 040000
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/* Hardware bits */
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#define DONE 0200
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#define IENABLE 0100
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/* Internal state bits */
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#define TIMEOUT 01 /* Delay timeout in progress */
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#define WOPEN 02 /* Waiting for open to complete */
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#define ISOPEN 04 /* Device is open */
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#define SSTART 010 /* Has special start routine at addr */
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#define CARR_ON 020 /* Software copy of carrier-present */
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#define BUSY 040 /* Output in progress */
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#define ASLEEP 0100 /* Wakeup when output done */
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