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RT(4) |
Kernel Interfaces Manual |
RT(4) |
NAME
rt — AIMS Lab Radiotrack FM radio device driver
SYNOPSIS
rt0 at isa? port 0x20c
rt1 at isa? port 0x284
rt2 at isa? port 0x30c
rt3 at isa? port 0x384
radio* at rt?
DESCRIPTION
The
rt driver provides support for the AIMS Lab Radiotrack FM radio tuners and compatible RadioReveal RA300 and SoundForte RadioX SF16-FMI FM radio tuners.
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.
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.
HISTORY
The rt device driver appeared in OpenBSD 3.0 and NetBSD 1.6.
AUTHORS
The rt driver was written by Vladimir Popov and Maxim Tsyplakov. The man page was written by Vladimir Popov.
BUGS
Support for the SF16-FMI cards is rather ugly, volume control is not working and the driver can not correctly determine signal state.