Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!udel!mmdf
From: Brian Reynolds <reynolds@fsg.com>
Newsgroups: comp.os.minix
Subject: (Atari) Virtual console and ANSI ESC commands
Message-ID: <48461@nigel.ee.udel.edu>
Date: 21 Mar 91 22:59:14 GMT
Sender: mmdf@ee.udel.edu
Lines: 24

This all takes place on an Atari Mega 4ST with minix 1.5.10.3.  I have
compiled the kernel with the default 2 virtual consoles and 1 serial
port.

This morning while using kermit I received some line noise that the
main console (/dev/tty0) interpreted as an ANSI "change foreground to
black" command (ESC[40m).  No problem I thought, I switched to
/dev/tty1, used elle to write a script to reset the inverse mode
(ESC[0m) and the foreground and background colors (ESC[30m and ESC[47m)
and tested it on /dev/tty1.  It worked so I switched to /dev/tty0, got
out of kermit and ran the script.  Nothing happened.  I switched back
and changed the colors and tried /dev/tty0 again.  I could see things
now, but the colors weren't what I expected.  After some testing I've
discovered that the "change foreground color" string (ESC[4xm where
0<=x<=9) changes the backround color on /dev/tty0 and that the "change
background color" string (ESC[3xm) does nothing.  On /dev/tty1 these
strings work properly.  I haven't had time to look at the source yet.
Has anyone else noticed this?  Is there a command that resets all of
the terminal defaults?  'stty default' gets most of them, but it
doesn't change the screen colors.

Brian Reynolds "... a drone from sector 7G."
Fusion Systems Group
reynolds@fsg.com -or- ...!uupsi!fsg!reynolds