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Path: utzoo!watmath!clyde!burl!ulysses!ucbvax!info-vax
From: info-vax@ucbvax.ARPA
Newsgroups: fa.info-vax
Subject: Re: PASSALL
Message-ID: <5590@ucbvax.ARPA>
Date: Mon, 18-Mar-85 17:02:11 EST
Article-I.D.: ucbvax.5590
Posted: Mon Mar 18 17:02:11 1985
Date-Received: Tue, 19-Mar-85 05:26:16 EST
Sender: daemon@ucbvax.ARPA
Organization: University of California at Berkeley
Lines: 24

From: Richard Garland <OC.GARLAND@CU20B.ARPA>

Rudy:
	What you are gtting is input buffer overflow.

There are several sysgen params (think TTY_ALARM or some such) which
determine at what point the VAX gets upset when data is comming in.
Assuming the typeahead buffer is 96 characters, the "alarm" might be
set at 64 (default may be less).

Then one of 2 things happens:

	If /HOSTSYNCH is on, VAX sends XOFF.

	If not, it sends a BEL.

The idea is, the guy at the terminal stops typing when he hears the
noise.  For a smart terminal like a VT100 with HOSTSYNCH set, the XOFF
will disable the keyboard.

Fix may be to use a large alternate typeahead buffer, fuss with the alarm
point, etc, etc.
					Rg
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