projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 0edd06b4 KT |
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 */ |