*BSD News Article 44345


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From: Terry Lambert <terry@cs.weber.edu>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Serial Port
Date: 21 May 1995 23:57:50 GMT
Organization: Utah Valley State College, Orem, Utah
Lines: 26
Message-ID: <3pok1u$q2c@park.uvsc.edu>
References: <3pmfvnINNj45@columbia.cs.ubc.ca>
NNTP-Posting-Host: hecate.artisoft.com

goldberg@cs.ubc.ca (Murray W. Goldberg) wrote:
] Has anyone seen this before? My first serial port is recognized and works
] just fine. My second serial port (at 0x2f8 or whatever) is reported as
] "not detected" on boot-up. The port is configured at the address which
] the boot sequence says is not found. Any ideas? 

My guess is that FreeBSD is looking for the standard location of
your serial port (instead of "whatever") and isn't finding it.

If you have internal modems or more than one com port, (1+3 or 2+4),
you will need to make sure that they aren't trying to "share" their
interrupts.  You can't do that even in DOS and get the ports to
run simultaneously.

Also make sure the port is enabled in CMOS and via board jumpers
if it can be disabled that way.

Finally, if it's com2, it's at IRQ 3; if you have anything else at
IRQ 3, it won't work.

                                        Terry Lambert
                                        terry@cs.weber.edu
---
Any opinions in this posting are my own and not those of my present
or previous employers.