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From: info-vax@ucbvax.ARPA
Newsgroups: fa.info-vax
Subject: Re: VMS4-EDT and VT52
Message-ID: <9971@ucbvax.ARPA>
Date: Sun, 18-Aug-85 23:37:18 EDT
Article-I.D.: ucbvax.9971
Posted: Sun Aug 18 23:37:18 1985
Date-Received: Tue, 20-Aug-85 21:17:50 EDT
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Organization: University of California at Berkeley
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From: munnari!mimir.dmt.oz!dcm@seismo.CSS.GOV

> From: <#D14%DDATHD21.BITNET@WISCVM.ARPA>
> 
> We have some problems with a VT52 emulation program.
> VMS4-EDT sends \H=J when entering the change
> mode. What's \ (escape backslash) ?
> 

The sequence (backslash) turns off the VT52's hold-screen mode. This mode
prevents the screen from scrolling once it is full until the "scroll" key is hit
or this mode is turned off. The sequence [ turns the hold-screen mode on.

No doubt EDT sends this sequence frequently as part of it's control sequences to
ensure that the mode is not inadvertantly left on.

I have a working VT52 emulator which I wrote running on a pc, so if you have anyother queries I would be happy to try to answer them.

Hop this is of some use to you!


Dennis Mills

(my apologies if you get this more than once, I haven't used the reply facility
before and I'm not sure if I have done things correctly)
--------------------------------------------------------------------------
Dennis Mills, CSIRO Div of Manufacturing Technology, Melbourne, Australia.

PHONE: +61 (03)418-0266	    ACSNET: dcm@mimir.dmt.oz
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