24.7 tysty (8577)

A call originating from “stty” will have a second parameter of zero.

8589:

Empty all the queues associated with the terminal forthwith. They quite likely contain nonsense;

8591:

Reset the speed information (useful in the case of a DH11 interface, but of little interest for the present selection of code);

Reset the “erase” character and the “kill” character. (“kill” here denotes “throw away the current input line”.) Note that if these characters are changed away from their normal values of “#” and “@” respectively, no corresponding changes are made to “maptab”. Nor should they!),

8593:

Reset the “flags” defining some relevant terminal characteristics (see Sheet 79):

flag	bit	if set ...
XTABS	1	the terminal will not interpret
		horizontal tab characters
		correctly;
LCASE	2	the terminal supports only the
		64 character ASCII subset;
ECHO	3	the terminal is operating in
		full duplex mode, and input
		characters must be echoed
		back;
CRMOD	4	upon input, a “carriage
		return” is replaced by a
		“line feed”; upon output, a
		“line feed” is replaced by a
		“carriage return” and a “line
		feed”;
RAW	5	input characters are to be
		sent to the program exactly
		as received, without “erase”
		or“kill” processing, or
		adjustment for backslash
		characters.

In addition, the following bits are interrogated by “ttyoutput” (8373) in choosing the delay which should ensue after the character indicated is sent, before sending the next character:

8,9	line feed;
10,11	horizontal tab;
12,13	carriage return;
14	vertical tab or form feed.