sttyv6(7)						 Miscellaneous Information Manual						 sttyv6(7)

NAME

       sttyv6: stty - terminal interface for Version 6/PWB compatibility

DESCRIPTION

       These  routines attempt to map the UNIX Time-Sharing System, Sixth Edition (Version 6), and PWB stty and gtty calls into the current ioctls
       that perform the same functions.  The mapping cannot be perfect.  The way the features are  translated  is  described  below.   The  reader
       should be familiar with before studying this entry.

       The following data structure is defined in the include file

	      struct sgttyb {
		   char  sg_ispeed;  /* input speed */
		   char  sg_ospeed;  /* output speed */
		   char  sg_erase;   /* erase character */
		   char  sg_kill;    /* kill character */
		   int	sg_flags;    /* mode flags */
	      }

       The flags, as defined in sgtty.h, are:

	   define HUPCL
	   define XTABS
	   define LCASE
	   define ECHO
	   define CRMOD
	   define RAW
	   define ODDP
	   define EVENP
	   define ANYP
	   define NLDELAY
	   define TBDELAY
	   define CRDELAY
	   define VTDELAY
	   define BSDELAY

	   define CR0
	   define CR1
	   define CR2
	   define CR3
	   define NL0
	   define NL1
	   define NL2
	   define NL3
	   define TAB0
	   define TAB1
	   define NOAL
	   define FF0
	   define FF1
	   define BS0
	   define BS1

       When  the command (ioctl is executed, the flags in the old structure are mapped into their new equivalents in the structure.  Then the com-
       mand is executed.

       The following table shows the mapping between the old flags and the current flags.  Note that flags contained in the structure that are not
       mentioned below are cleared.

       HUPCL (if set) sets the termio HUPCL flag;
       HUPCL (if clear) clears the termio HUPCL flag;
       XTABS (if set) sets the termio TAB3 flag;
       XTABS (if clear) clears the termio TAB3 flag;
       TBDELAY (if set) sets the termio TAB1 flag;
       TBDELAY (if clear) clears the termio TAB1 flag;
       LCASE (if set) sets the termio IUCLC, OLCUC, and XCASE flags;
       LCASE (if clear) clears the termio IUCLC, OLCUC, and XCASE flags;
       ECHO (if set) sets the termio ECHO flag;
       ECHO (if clear) clears the termio ECHO flag;
       NOAL (if set) sets the termio ECHOK flag;
       NOAL (if clear) clears the termio ECHOK flag;
       CRMOD (if set) sets the termio ICRNL and ONLCR
	    flags; also, if CR1 is set, the termio CR1 flag is set, and if CR2 is set, the termio ONOCR and CR2 flags are set;
       CRMOD (if clear)
	    sets the termio ONLRET flag; also, if NL1 is set, the termio CR1 flag is set, and if NL2 is set, the termio CR2 flag is set;
       RAW (if set) sets the termio
	    CS8  flag,	and  clears the termio ICRNL and IUCLC flags; also, default values of 6 characters and 0.1 seconds are assigned to MIN and
	    TIME, respectively;
       RAW (if clear) sets the termio
	    BRKINT, IGNPAR, ISTRIP, IXON, IXANY, OPOST, CS7, PARENB, ICANON, and ISIG flags; also, the	default  values  control-D  and  null  are
	    assigned to the control characters EOF and EOL, respectively;
       ODDP (if set) if EVENP is also set, clears the termio
	    INPCK flag; otherwise, sets the termio PARODD flag;
       VTDELAY (if set) sets the termio FFDLY flag;
       VTDELAY (if clear) clears the termio FFDLY flag;
       BSDELAY (if set) sets the termio BSDLY flag;
       BSDELAY (if clear) clears the termio BSDLY flag.

       In addition, the CREAD bit is set, and, if the baud rate is 110, the CSTOPB bit is set.

       When  using  the  ispeed  entry	in  the structure is mapped into the appropriate speed in the CBAUD field.  The erase and kill entries are
       mapped into the erase and kill characters.

       When the (ioctl command is executed, the command is first executed.  The resulting structure is then mapped into the  structure,  which	is
       then returned to the user.

       The  following  table  shows  how the flags are mapped into the old structure.  Note that all flags contained in the structure that are not
       mentioned below are cleared.

       HUPCL (if set) sets the sgttyb HUPCL flag;
       HUPCL (if clear) clears the sgttyb HUPCL flag;
       ICANON (if set) sets the sgttyb RAW flag;
       ICANON (if clear) clears the sgttyb RAW flag;
       XCASE (if set) sets the sgttyb LCASE flag;
       XCASE (if clear) clears the sgttyb LCASE flag;
       ECHO (if set) sets the sgttyb ECHO flag;
       ECHO (if clear) clears the sgttyb ECHO flag;
       ECHOK (if set) sets the sgttyb NOAL flag;
       ECHOK (if clear) clears the sgttyb NOAL flag;
       PARODD (if set) sets the sgttyb ODDP flag;
       PARODD (if clear) clears the sgttyb ODDP flag;
       INPCK (if set) sets the sgttyb EVENP flag;
       PARODD, INPCK (if both clear) sets the sgttyb
	    ODDP and EVENP flags;
       ONLCR (if set) sets the sgttyb
	    CRMOD flag; also, if CR1 is set, the sgttyb CR1 flag is set, and if CR2 is set, the sgttyb CR2 flag is set;
       ONLCR (if clear) if CR1 is set, the sgttyb
	    NL1 flag is set, and if CR2 is set, the sgttyb NL2 flag is set;
       TAB3 (if set) sets the sgttyb XTABS flag;
       TAB3 (if clear) clears the sgttyb XTABS flag;
       TAB1 (if set) sets the sgttyb TBDELAY flag;
       TAB1 (if clear) clears the sgttyb TBDELAY flag;
       FFDLY (if set) sets the sgttyb VTDELAY flag;
       FFDLY (if clear) clears the sgttyb VTDELAY flag;
       BSDLY (if set) sets the sgttyb BSDELAY flag;
       BSDLY (if clear) clears the sgttyb BSDELAY flag.

       When using the CBAUD field is mapped into the ispeed and ospeed entries of the structure.  Also, the erase and kill characters  are  mapped
       into the erase and kill entries.

       Note that, since there is not a one-to-one mapping between the and structures, unexpected results may occur when using the older and calls.
       Thus, the and calls should be replaced in all future code by the current equivalents, and respectively.

WARNINGS

       These facilities are included to aid in conversion of old programs, and should not be used in new code.	Use  the  interface  described	in
       Note  that  these conversions do work for programs ported from UNIX Time-Sharing System, Seventh Edition (Version 7), because some V7 flags
       are defined differently.

SEE ALSO

       stty(2), termio(7).

																	 sttyv6(7)