Path: utzoo!utgpu!water!watmath!clyde!rutgers!husc6!wjh12!maynard!campbell
From: campbell@maynard.BSW.COM (Larry Campbell)
Newsgroups: comp.sys.dec
Subject: Re: VT100 compatibility
Message-ID: <1049@maynard.BSW.COM>
Date: 3 Feb 88 03:03:34 GMT
References: <3163@lll-winken.llnl.gov>
Organization: The Boston Software Works, Inc., Boston, MA
Lines: 26

From article <3163@lll-winken.llnl.gov>, by markat@lll-winken.llnl.gov (Mark Tassanari):

<> I have a question regarding VT100 compatibility.
<> 
<> My piece of the network consists of VT200 type terminals talking to VAXes via
<> DECserver 100s.  We recently installed a DECserver 200 as a service node that 
<> talks to a bank of Sytek LocalNet modems on another network of non-DEC hosts.
<> When I try to access one of these hosts while in VT100 emulation everything 
<> works fine.  However, in VT200 mode the communications fall apart, everything
<> is garbled.  I'm reasonably certain the problem is the between the Sytek, 
<> which is talking and expecting to hear VT100 characters, and the terminal, 
<> which is looking for VT200 characters.  The hosts can be ruled out because an 
<> identical service connected directly to one of the non-Dec hosts works well
<> in both terminal emulation modes.

VT200s operating in VT200 mode use eight-bit characters.  VT100s use only
seven-bit characters.  Dollars to donuts your Sytek stuff is dropping or
twiddling the high-order bit.
--
Larry Campbell                                The Boston Software Works, Inc.
Internet: campbell@maynard.bsw.com          120 Fulton Street, Boston MA 02109
uucp: {husc6,mirror,think}!maynard!campbell         +1 617 367 6846