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az(4) [netbsd man page]

AZ(4)							   BSD Kernel Interfaces Manual 						     AZ(4)

az -- Aztech/PackardBell radio card device driver SYNOPSIS
az0 at isa? port 0x350 az1 at isa? port 0x358 radio* at az? DESCRIPTION
The az driver provides support for the Aztech/PackardBell radio cards. The Aztech/PackardBell cards are stereo FM tuners that allow tuning in the 87.5-108.0 MHz range. They are capable of reporting signal status (tuned/not tuned, stereo/mono signal) and forcing audio output to mono. The Aztech cards use only one I/O port. The I/O port is set by the driver to the value specified in the configuration file. The I/O port must be one of 0x350 and 0x358. SEE ALSO
isa(4), radio(4) HISTORY
The az device driver appeared in OpenBSD 3.0 and NetBSD 1.6. AUTHORS
The az driver was written by Vladimir Popov and Maxim Tsyplakov. The man page was written by Vladimir Popov. BUGS
It is impossible to determine to which frequency the card is tuned. Thus, the driver will report an internally stored value even if it is not correct (changed by some program that uses direct port access). BSD
October 8, 2001 BSD

Check Out this Related Man Page

SF2R(4) 						   BSD Kernel Interfaces Manual 						   SF2R(4)

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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