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From: guy@rlgvax.UUCP (Guy Harris)
Newsgroups: net.unix-wizards,net.dcom
Subject: Re: any harm in allowing only ctrl-Q to restart output?
Message-ID: <322@rlgvax.UUCP>
Date: Fri, 4-Jan-85 01:16:18 EST
Article-I.D.: rlgvax.322
Posted: Fri Jan  4 01:16:18 1985
Date-Received: Sat, 5-Jan-85 02:14:37 EST
References: <247@lsuc.UUCP> <1675@drutx.UUCP>
Organization: CCI Office Systems Group, Reston, VA
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Xref: watmath net.unix-wizards:11346 net.dcom:761

From the original article:

> I'd like to change UNIX to require ctrl-Q (actually t_startc)
> to restart output. ...
> We're running v7 on a Perkin-Elmer 3220, by the way.

The reply:

> stty -ixany   should also cause the dc1/dc3 sequence to be recognized
>               exclusively.  It is a lot easier than patching source
> 	        code.

*Ahem.*  This is the case with the System N driver, for N >= III.  The
driver was much changed in System III; the "IXANY" bit was not in any
other UNIX terminal driver.  Specifically, it is not in the V7 driver.
Berkeley's "V7 with goat gland injections" driver has a bit which is
the inverse of this, called LDECCTQ.

As such, "stty -ixany" doesn't do a bit of good to a user running V7 on
a Perkin-Elmer 3220, and patching source code *is* required to make
XON/XOFF handling strict on that system.

Please don't assume that everybody is running your version of UNIX.
Also, if you *are* asking a question about UNIX, please state the derivation
of the version; it will help people to give you an answer pertinent
to that version.

	Guy Harris
	{seismo,ihnp4,allegra}!rlgvax!guy