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000285_news@columbia.edu_Mon May 1 05:09:42 1995.msg
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From: monty@indirect.com (Jim Monty)
Subject: Re: TELNET VT220 Support
Message-Id: <D7vvo6.7BA@indirect.com>
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Date: Mon, 1 May 1995 05:09:42 GMT
References: <3nmst7$q8g$1@mhafc.production.compuserve.com> <3no582$lhc@apakabar.cc.columbia.edu>
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On 27 Apr 1995 13:12:34 GMT, Frank da Cruz (fdc@watsun.cc.columbia.edu) wrote:
> In article <3nmst7$q8g$1@mhafc.production.compuserve.com>,
> Paul Taylor <75014.216@CompuServe.COM> wrote:
> >Will the VT220 TELNET TCP/IP support in kermit support terminal
> >escape sequences for foreground and background processing? The
> >TELNET that is part of TCP/IP base for OS/2 supports VT220 except
> >for this capability. I also need this capability on QNX4. Am
> >using both of these systems to access a Unix system that uses the
> >foreground background features of VT220's for pop up windows etc.
> >
> I'm sorry, I don't know what you are talking about. My VT220 manual
> does not say a word about fore/background processing.
This is just a stab in the dark, but perhaps what Paul Taylor is referring
to when he speaks of the VT220's "foreground and background processing"
and "pop up windows" capabilities is actually the multiple session and
windows capabilities of the DEC VT420 terminal. The VT420 allows one to
run two sessions at the same time, to toggle between them with the F4
(Session) key, and even to cut and paste text between sessions (windows).
To do this, the terminal must be connected to the host or terminal server
using two cables, or to a terminal server that supports multiple sessions,
or to a host running Digital Equipment Corporation's Session Support
Utility (SSU). If you absolutely, positively can't have a personal
computer and a terminal emulator (Kermit!) on your desktop, then a VT420
is the model terminal you beg for.
What Mr. Taylor should know is that, whereas the VT420 allows only two
simultaneous sessions, Kermit supports six simultaneous TCP/IP
connections, even to the same host. (At least MS-DOS Kermit 3.14 does. I
don't know about the OS/2 version.) One can easily toggle between these
multiple sessions by pressing Alt-n (\KnextSession). (Again, I only
_know_ this is true for MS-DOS Kermit 3.14. Check the documentation for
your flavor of Kermit.)
What _is_ missing from Kermit is the capability to easily cut and paste
text between "windows" (sessions). For the model of how this feature, if
implemented in Kermit, might ideally work, sit at a DEC VT420 terminal
and use the F1 (Copy), Select, Remove, and Insert keys to cut and paste
raw ASCII text. (VT420 terminals are designed for those who can type.
Don't bother looking for a mouse port.)
[C:\] MS-Kermit>set opinion-mode on, connect
I, Jim, will continue to use MS-DOS Kermit and support its development
through the purchase of supporting documentation even if the capability to
cut and paste text within and between sessions is never added to the
program. But I shall be very pleased if it is.
(If a VT420 can do it without Microsoft Windows, so can Kermit! ;-)
[C:\] MS-Kermit>set opinion-mode off, connect
---
Jim Monty
monty@indirect.com
Tempe, Arizona USA