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000343_JDanSkinner@JDanSkinner.com_Fri Feb 28 17:13:36 EST 2003.msg
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Article: 14140 of comp.protocols.kermit.misc
Path: newsmaster.cc.columbia.edu!panix!bloom-beacon.mit.edu!newsfeed.stanford.edu!postnews1.google.com!not-for-mail
From: JDanSkinner@JDanSkinner.com (Dan Skinner)
Newsgroups: comp.unix.sco.misc,comp.protocols.kermit.misc
Subject: Re: SCOANSI vs ANSI vs mapchan
Date: 28 Feb 2003 14:09:32 -0800
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fdc@columbia.edu (Frank da Cruz) wrote in message news:<b3nsq2$5nd$1@watsol.cc.columbia.edu>...
> Tech-support issue of the week... Kermit 95:
>
> http://www.columbia.edu/kermit/k95.html
>
> includes an SCO ANSI terminal emulator. When making a Telnet, Rlogin, or
> SSH connection to an SCO platform, K95 sends the terminal type name.
>
> To get the desired emalution (SCO function keys, special escape sequences,
> etc), the user must choose the K95 terminal type called SCOANSI, as opposed
> to "regular" ANSI, which is the original "BBS ANSI" that is only a small
> subset of SCOANSI. However, most SCO operating systems do not understand
> "SCOANSI" (this issue has been discussed here before, and I believe the
> problem was fixed in newer SCO operating systems).
>
> When the SCO OS does not understand "SCOANSI", our advice is to tell K95
> to tell the server its type is "ANSI". The K95 commands are:
>
> set terminal type scoansi ; What I am
> set telnet terminal-type ansi ; What I say I am
>
> (the latter command applies to SSH and Rlogin too).
>
> As far as I know, this has worked for years. But suddenly we're getting
> reports of fractured screens and failing file transfers from people who
> do this, e.g. on Open Server 5.0.5. Either something has changed on the
> SCO end or people have been having problems all along but not reporting
> them. If I tell the user to tell the SCO OS to:
>
> mapchan -n
>
> the problems go away. Similarly, if the user omits the "set telnet
> terminal-type ansi" command, the problems go away (but then they have
> to set their terminal type manually at the SCO shell prompt).
>
> My questions are these:
>
> 1. Exactly which SCO operating systems understand the name "SCOANSI"?
>
> 2. Does the SCO Telnet (Rlogin, SSH) server, when it is told by the
> client that terminal type is ANSI, activate mapchan?
>
> 3. If the answer to (2) is yes, is "ANSI" the only terminal-type name
> that causes this to happen?
>
> Thanks.
>
> - Frank
Frank;
I don't have access to an SCO box later than 5.04 at the moment. I do
however have some varied experience with mapchan. Mapchan -n is
useful on the console to get the proper framing characters. I've been
sticking it into .profile since ole version 5.0.0 as a matter of
course. I've never had any problems with file transfers using Kermit
or ftp related to mapchan, nor have I had any problem other than bad
framing (line draw) characters on the console.
I just commented it out and logged in:
1. from console, screwed up farming characters.
Believe it or not this is a mono-vga monitor TERM=ansi
2. from w98 w/k95 as scoansi, telnet no problem
3. from w98 w/K95 as scoansi, ssh no problem
4. from w98 w/PuTTY as scoansi, ssh no problem
In these cases the value of TERM is ansic because any value of TERM on
entry to my .profile containing ansi ends up ansic if not the console
5. from Linux (text console) w/Kermit, telnet no problem
6. from Linux (text console) w/Kermit, ssh no problem
7. from Linux (tyext console) w/OpenSSH, ssh no problem
8. from Linux (tyext console) w/BSD, telnet no problem
The linux termcap is really a hacked version of ansic from
the SCO 5.0.4
I ran off a copy of man mapchan to a text file. I'll email it to the
Kermit support address at Columbia.
Sorry I can't provide any info on 5.0.5 or 5.0.6 but I thought this
might give you a baseline.
Regards�Dan.