Date: Mon, 21 May 2001 00:46:21 -0700 From: "Ted Mittelstaedt" <tedm@toybox.placo.com> To: "David Banning" <david@banning.com>, <questions@FreeBSD.ORG> Subject: RE: digiboard serial port behaviour problem Message-ID: <001801c0e1ca$20efbe40$1401a8c0@tedm.placo.com> In-Reply-To: <20010521025944.A1106@yahoo.com>
next in thread | previous in thread | raw e-mail | index | archive | help
>-----Original Message----- >From: owner-freebsd-questions@FreeBSD.ORG >[mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of David Banning >Sent: Sunday, May 20, 2001 8:00 PM >To: questions@FreeBSD.ORG >Subject: digiboard serial port behaviour problem > > > >I am converting an old SCO system to FreeBSD and the database they >are running is an old SCO 3.2 binary. > >The digiboard PC/xe board seems to work with vi and mutt fine but >when there t comes time for the opening screen on this database program > (I guess there is a burst of a lot of characters at one time) >the terminal hangs. > Are you ABSOLUTELY sure that the TERMINAL hangs and not the session? This is something that you need to check - perhaps with a laptop or something else running a terminal emulator. >It makes no difference what type of terminal I use, or the emulation. > This would seem to be a session thing, not a terminal problem. But, if it really is a terminal problem, then you might be able to specify padding in the termcap entry for the terminal that would fix the problem. Padding was often used for older 3-wire installations that used xon/xoff and the older terminals that only supported xon/xoff. For example, the original DEC VT100 did not support RTS/CTS flow control, only xon/xoff >This digiboard problem does not occur in SCO under the old 3.2 >system. > >I just wonder if anyone knows if this type of thing can be helped >by adjusting one of the many parameters that are changable with >stty. I get the feeling it's a timing thing. All the terminals are >just 3 wires. I wonder if that could be another problem, as I >am guessing that the other wires would provide flow control, >and in their absence, I would be depending I think, only on >xon/xoff. > One big problem with 3-wire installs is that there's no way for the computer to tell that the terminal is switched on or off, because DTR in these installations is usually pinned high. >I changed the speed of one terminal from 38600 to 9600 with no >success. > That won't matter if it's a padding problem - if you need padding in the termcap entry for the terminal, the terminal can act up even if you running at 1200 baud. Ted Mittelstaedt tedm@toybox.placo.com Author of: The FreeBSD Corporate Networker's Guide Book website: http://www.freebsd-corp-net-guide.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?001801c0e1ca$20efbe40$1401a8c0>