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From: shor@sphinx.UChicago.UUCP (Melinda Shore)
Newsgroups: net.info-terms
Subject: Re: Visible bells
Message-ID: <199@sphinx.UChicago.UUCP>
Date: Thu, 21-Feb-85 11:56:23 EST
Article-I.D.: sphinx.199
Posted: Thu Feb 21 11:56:23 1985
Date-Received: Tue, 26-Feb-85 03:48:36 EST
References: <385@isrnix.UUCP>, <392@snow.UUCP>
Organization: U. Chicago - Computation Center
Lines: 28

> Does anyone know visible-bell termcap entries (for use with e.g. Emacs)
> for any of the following terminals?
>
> adm5
> adm3a+
> tvi910+
> tvi912
> Data-Type XK-1

I recently did a termcap for the TeleVideo TPC I, which more-or-less
emulates a 912.  Alas, I don't think there is a way to have a visible
bell.  The adm3a and tvi91x use onscreen embedded characters to set visual
attributes (which is why spacing looks funny if you run nroff on text that
has underlining in it and send it to the stdout ... ).  The attribute is
turned off when the embedded character scrolls off the top of the screen.
Also, the attribute is set from where the character is embedded to either
the bottom of the screen or to the next character that appears that turns
the attribute off.  This is different from the tvi950, where a program can
send esc-b to the screen and reverse the whole screen, and esc-whatever to
reset it to normal.

-- 
Melinda Shore, Microcomputer Laboratory
University of Chicago Computation Center
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