Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!ux1.cso.uiuc.edu!bc
From: bc@ux1.cso.uiuc.edu (B.C.)
Newsgroups: comp.os.minix
Subject: /dev/tty2 panic with "term"
Summary: /dev/tty2 doesn't work
Keywords: panic term serial tty hang
Message-ID: <1990Jan16.050329.20051@ux1.cso.uiuc.edu>
Date: 16 Jan 90 05:03:29 GMT
Reply-To: b-cox2@uiuc.edu (B.C.)
Organization: University of Illinois at Urbana-Champaign
Lines: 26

I have been completely unsuccessful in using the programs "term", "zterm", and
"kermit" with /dev/tty2.  (Read: any program with /dev/tty2.)

Whenever I run any of these under a standard AT 1.3 kernel, a bunch of garbage
shows up on the screen and the system hangs (real hang, not ^F9 hang).  Under
Evans' protected-mode kernel I get a general protection fault (9) panic,
followed by an immediate automatic reboot (I don't even have time to read the
error message -- the code seems to indicate that I should have to press a key
to reboot).

I have changed the NR_RS_LINES constant to 2 in the file kernel/tty.h, thinking
that that would help, but it did not.  I checked the constants relating to the
interrupt and port assignments, and they all seem to be OK.  The programs work
OK with /dev/tty1, though, except for the fact that this is a mouse.  :-)

I guess a workaround would be to swap the mouse and the modem, but since my
port sizes are happiest (no adapters) the way they are, I'd rather find a real
solution (not to mention I'd like to know what's going on).

If anyone has a clue for me, I'd love to hear from you.  If I get a deluge of
new and unposted patches, I'll post the first one that works.

Thanks,

Ben Cox
b-cox2@uiuc.edu