1.\" 2.\" Copyright (c) 2010 Lev Serebryakov <lev@FreeBSD.org>. 3.\" All rights reserved. 4.\" 5.\" This code is derived from software contributed to The NetBSD Foundation 6.\" by Lennart Augustsson. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 17.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27.\" POSSIBILITY OF SUCH DAMAGE. 28.\" 29.\" $FreeBSD$ 30.\" 31.Dd November 20, 2011 32.Dt UMCS 4 33.Os 34.Sh NAME 35.Nm umcs 36.Nd USB support for serial adapters based on the MCS7820 and MCS7840 chips 37.Sh SYNOPSIS 38To compile this driver into the kernel, 39place the following lines in your 40kernel configuration file: 41.Bd -ragged -offset indent 42.Cd "device usb" 43.Cd "device ucom" 44.Cd "device umcs" 45.Ed 46.Pp 47Alternatively, to load the driver as a 48module at boot time, place the following line in 49.Xr loader.conf 5 : 50.Bd -literal -offset indent 51umcs_load="YES" 52.Ed 53.Sh DESCRIPTION 54The 55.Nm 56driver provides support for various multiport serial adapters based on the MosCom 57MCS7820 and MCS7840 chips. They are 2- or 4-port adapters with full-featured 5816550-compatible UARTs and very flexible baud generators. Also, these chips 59support RS422/RS485 and IrDA oprations. 60.Pp 61The device is accessed through the 62.Xr ucom 4 63driver which makes it behave like a 64.Xr tty 4 . 65.Pp 66Different ports on device are presented as sub-units, like 67.Pa /dev/ttyU0.1 68and 69.Pa /dev/ttyU0.2 70.Sh HARDWARE 71The 72.Nm 73driver was tested on the following adapters: 74.Pp 75.Bl -bullet -compact 76.It 77ST Lab U-360 two-port serial USB adapter 78.It 79ST Lab U-400 four-port serial USB adapter 80.El 81.Sh SEE ALSO 82.Xr tty 4 , 83.Xr ucom 4 , 84.Xr usb 4 85.Sh BUGS 86This driver doesn't support access to any fine tunes of 87chip, like RS522/RS485 mode, non-standard baudrates, etc. 88.Sh HISTORY 89The 90.Nm 91driver 92appeared in ports since December of 2010. 93.Sh AUTHORS 94.An -nosplit 95The 96.Nm 97driver was written by 98.An Lev Serebryakov 99.Aq lev@FreeBSD.org . 100