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000038_news@watsun.cc.columbia.edu _Fri May 7 01:17:01 1999.msg
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From: jrd@cc.usu.edu (Joe Doupnik)
Subject: Re: Tek emulation resizes dos-box in kermit 3.14
Message-ID: <5tLBqiOB8wuI@cc.usu.edu>
Date: 6 May 99 22:24:26 MDT
Organization: Utah State University
To: kermit.misc@watsun.cc.columbia.edu
In article <Pine.LNX.4.05.9905061042160.10718-100000@dd.tc.fluke.com>, David Dyck <dcd@tc.fluke.com> writes:
> I use msdos kermit 3.14 and run it from the windows 95
> command line
> kermit -f myscript
>
> I have updated the properties to set the window to about 42 lines.
> (I'm not near that computer now).
>
> This has worded fine for years, thanks
>
42 text lines is a kludge in the system. It is a normal 80x24 sized
screen (scan properties) and an 8x8 dot font extracted from the display
adapter's ROM. Kermit does not try to deal with that and passes the affair
to DOS and the Video Bios to cope with. Some adapters might have a special
video mode for it and if so Kermit uses it to restore the video without
knowning what it means.
Win95 fakes everything (as we know, sigh) and takes over video
work. Thus you are lucky to return from graphics mode back to text mode
while running in a DOS box. That usually works from a full screen DOS box
but not a window, and the reasons are best known to MS.
> Today, when I tried to use gnuplot to display a plot in
> the kc_tek40xx terminal type it was nice to see the graph, thanks again.
>
> When I exited gnuplot (or typed control-c) the screen exits the
> graphics mode, and gets reset to text mode, but now the screen
> is only displaying 25 line, and kermit seems to be confused.
> (the command prompt line is off the screen, perhaps as if
> kermit thinks there are still 42 lines to display in...)
That's Windows not doing what DOS would have done.
> Repeat easier by using kermit 3.14 and set display properties to
> 42 lines, and connect to a host that has perl installed and
> execute the command
>
> perl -e 'print "\033\014\030\n"'
You set the display using the DOS MODE program plus ANSI.SYS, which
does the font search etc business. Kermit doesn't use either and doesn't
try the seach stuff.
> Is this a known problem?
> Any ideas on a fix, so that I could return to 42 line mode after
> exiting tek mode.
>
>
> I tried to 'push' or run the mode program to change the number
> of lines, but kermit couldn't execute c:\command.com
Then your DOS environment needs spiffing up to tell Kermit
where to find command.com. That's the SHELL= material one sees with
the SET command to the DOS prompt.
Joe D.
> Thanks,
> David Dyck
>