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.\" $OpenBSD: rt.4,v 1.5 2002/01/23 19:17:13 mickey Exp $
.\" $RuOBSD: rt.4,v 1.3 2001/10/26 05:38:43 form Exp $
.\"
.\" Copyright (c) 2001 Vladimir Popov <jumbo@narod.ru>
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
.\" USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
.\" ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd October 8, 2001
.Dt RT 4
.Os
.Sh NAME
.Nm rt
.Nd AIMS Lab Radiotrack FM radio device driver
.Sh SYNOPSIS
.Cd "rt* at isa? port 0x20c"
.Cd "rt* at isa? port 0x30c"
.Cd "rt* at isa? port 0x284"
.Cd "rt* at isa? port 0x384"
.Cd "radio* at rt?"
.Sh DESCRIPTION
The
.Nm
driver provides support for the AIMS Lab Radiotrack FM radio tuners and
compatible RadioReveal RA300 and SoundForte RadioX SF16-FMI FM radio tuners.
.Pp
The Radiotrack is a stereo FM tuner that allows to tune in the range
87.5 - 108.0 MHz, report signal status on the current frequency, and
force audio output to mono.
.Pp
The card is based on the LM7000 chip, see
.Xr radio 4
for details.
.Pp
The Radiotrack cards take only one I/O port.
The I/O port is set by the driver to the value specified in
the configuration file and must be either 0x20c or 0x30c.
.Sh BUGS
Support for the SF16-FMI cards is rather ugly, volume control is not working
and the driver can not correctly determine signal state.
.Pp
It is impossible to determine the frequency tuned into.
Thus, the driver will report an internally stored value even if it is not
correct (e.g. tunning was done through the direct I/O access).
.Sh SEE ALSO
.Xr isa 4 ,
.Xr radio 4 ,
.Xr radio 9
.Sh AUTHORS
The
.Nm
driver was written by
.An Vladimir Popov Aq jumbo@narod.ru
and
.An Maxim Tsyplakov Aq tm@oganer.net .
The man page was written by
.An Vladimir Popov Aq jumbo@narod.ru .
.Sh HISTORY
The
.Nm
device driver appeared in
.Ox 3.0 .
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