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From: "Kristof Provost" <kristof@sigsegv.be>
To: scrat <baho-utot@columbus.rr.com>
Cc: "FreeBSD Questions" <freebsd-questions@freebsd.org>
Subject: Re: Serial port ttyS0
Date: Mon, 13 Feb 2017 22:29:03 +0100
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On 13 Feb 2017, at 19:04, scrat wrote:
> root@desktop:~ # sysctl dev.uplcom
> dev.uplcom.0.ttyports: 1
> dev.uplcom.0.ttyname: U0

Based on this I’d expect /dev/ttyU0 to exist, and to be the device you want.

Regards,
Kristof