RT(4) BSD 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.
SEE ALSO isa(4), radio(4)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.
BSD October 8, 2001 BSD
Check Out this Related Man Page
SF2R(4) BSD Kernel Interfaces Manual SF2R(4)NAME
sf2r -- SoundForte RadioLink SF16-FMR2 FM radio device driver
SYNOPSIS
option RADIO_TEA5759
sf2r0 at isa? port 0x384
radio* at sf2r0
DESCRIPTION
The sf2r driver provides support for the SF16-FMR2 FM radio tuners.
The SF16-FMR2 is a stereo FM tuner that allows to tune in the range 87.5 - 108.0 MHz, report signal status on the current frequency, force
audio output to mono, perform hardware signal search, and has an internal AFC.
The SF16-FMR2 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
0x384.
Philips Semiconductors released two almost identical chips TEA5757 and TEA5759. The TEA5757 is used in FM-standards in which the local
oscillator frequency is above the radio frequency (e.g. European and American standards). The TEA5759 is the version in which the oscillator
frequency is below the radio frequency (e.g. Japanese standards). The option RADIO_TEA5759 changes the algorithm of frequency calculation
for the TEA5757 based cards to conform with the Japanese standards.
SEE ALSO isa(4), radio(4)HISTORY
The sf2r device driver appeared in OpenBSD 3.0 and NetBSD 1.6.
AUTHORS
The sf2r driver was written by Vladimir Popov and Maxim Tsyplakov. The man page was written by Vladimir Popov.
BUGS
MediaForte made two variants of the SF16-FMR2 cards, the first one has an internal amplifier of the output sound, the second one does not
have such an amplifier. The current driver supports only the second variant.
BSD October 8, 2001 BSD
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