40 lines
1.2 KiB
Groff
40 lines
1.2 KiB
Groff
." Automatically generated text
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.TH 7 "August 31, 2006" "OSS" "OSS Devices"
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.SH NAME
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oss_ich - Intel ICH/SiS7012/Nvidia/AMD audio device driver.
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.SH DESCRIPTION
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Open Sound System driver for Intel ICH, nVidia Nforce, AMD and SiS 7012
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devices.
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.SH OPTIONS
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.IP \(bu 3
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intelpci_rate_tuning=<NNN> (default is 240)
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Some Compaq Deskpro models (EN and EX at least) and certain Dell models
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play and record audio at a higher speed than what is expected. If you have
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an Intel815 motherboard with an AD1885 you can try setting the parameter
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to 240, 280 or 330 and see which works for your system. The way to figure
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out the the right intelpci_rate_tuning value is using the osstest application.
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It reports a sample rate drift value ("Sample rate drift" or "srate drift").
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Use the following formula (round the result to the nearest integer):
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<intelpci_rate_tuning = (240*(drift+100))/100>
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.IP \(bu 3
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intelpci_force_mmio=<0|1> (default is 0=Disable)
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This option can be used to force the ICH4/ICH5 and ICH6 controllers to
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run in memory mapped mode to free up I/O address space.
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.IP \(bu 3
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ich_jacksense=<0|1> (default is 0)
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Force use of jacksensing on some AD198x mixers.
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.SH FILES
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/usr/lib/oss/conf/oss_ich.conf Device configuration file.
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.SH AUTHOR
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4Front Technologies
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