/*  L C K T I O    module   */

C O N O C  --	 Output a character to the console terminal

		 conoc(c)
		 char c = character to print

C O N X O  --	 Write x characters to the console terminal

		 conxo(x,s)
		 char *s = string to print
		 int x = number of characters to print

C O N O L  --	 Write a line to the console terminal

		 conol(s)
		 char *s line to print

C O N O L A  --  Write an array of lines to the console terminal

		 conola(s)
		 char *s[] = array to print

C O N O L L  --  Output a string followed by CRLF

		 conoll(s)
		 char *s = string to print

C O N C H K  --  Check to see if user did hit keyboard
		 Return 1 if keyboard has been hit

		 conchk()

C O N I N C  --  Get a character from the console, wait for timo seconds
		 returns -1 if no keyboard input

		 coninc(timo)
		 int timo = timeout in seconds

T T O P E N  --  Open a Comport, returns 0 on success, -1 on failure.
		 sets ttyfd to 0 if COM1 or to 1 if COM2

		 ttopen(ttname,lcl,modem)
		 char *ttname = name of comport ("COM1" or "COM2")
		 int lcl     ( not used , set to zero	)
		 int modem   ( not used , dummy argument)

T T C L O S  --  Close the TTY , set ttyfd to 0

		 ttclos()

T T O L  --	 Similar to "ttinl", but for writing.
		 returns number of characters writen to Com port

		 ttol(s,n)
		 int n = number of characters to send
		 char *s = string to send

T T O C  --	 Output a character to the communication line
		 Returns -1 if an error occured

		 ttoc(c)
		 char c = character to write

T T I N C  --	 Read a character from the communication line
		 return the character if possible otherwise -1
		 timout in timo seconds

		 ttinc(timo)
		 int timo = timout period

T T I N L  --	 Read a record (up to break character) from comm line.
		 If no break character encountered within "max", return "max"
		 characters, with disposition of any remaining characters
		 undefined.  Otherwise, return the characters that were read,
		 including the break character, in "dest" and the number of
		 characters read as the value of function, or 0 upon end of
		 file, or -1 if an error occurred.  Times out & returns error if
		 not completed	within "timo" sconds.

		 ttinl(dest,maxnum,timo,eol)
		 int maxnum = maximum number of char to read
		 int timo = timout period
		 int eol  = break character
		 char *dest = destination string

TTPKT  --	 Condition communication line for packect mode

		 ttpkt (speed,flow)
		 int speed  = baud rate
		 int flow  = flow control used 0 = None, 1 = XON/XOFF


TTVT  --	 Condition communication line for use as virtual terminal
		 Returns -1 if Error */

		 ttvt (speed,flow)
		 int speed = baud rate
		 int flow = flow control used
		 extern int parity = parity to be used (e, o, m, s, n)

T T S S P D --	 check for valid baud rates
		 return the baud rate if valid otherwise -1

		 ttsspd(speed)
		 int speed = baud rate

TTFLUI	--	  Flush tty input buffer

		  ttflui()

TTFLUO	--	  Flush tty ouput buffer

		  ttfluo()

T T I N --	  read one character for tty input buffer
		  return the character if available otherwise -1

		  ttin()

T T C H K  --	  check if character available in receive buffer */

		  ttchk() {


T T S O M E  --   Return TRUE if receive buffer has character in it.

		  int ttsome()

T T F L O W --	  Checks for XOFF,if so waits for XON, timeout after 5 sec.

		  ttflow()

C A R R I E R --  Check for existance of modem carrier signal
		  Returns: 1 if carrier present; else returns 0

		  int carrier()
		  extern int cdetect = if set will return 1

S L E E P  --	  Wait for m seconds

		  sleep(m)
		  int m = number of seconds to sleep


T I C K S  --	  Returns total number of clock ticks since midnight */

		  long int ticks()

T O T S E C  --   Returns time since midnight in seconds

		  long int totsec()


T O O L O N G --  Timeout for user input with tout in seconds */

		  toolong(tout)
		  int tout = time out period
		  extern long int strtim  = starting time tor tout

Z T I M E  --	  Return date/time string

		  ztime(s)
		  char **s = pointer to string containing date and time