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IT(4)			  OpenBSD Programmer's Manual			 IT(4)

     it - ITE IT8705F/IT8712F/IT8716F/IT8718F/IT8720F/IT8726F and SiS SiS950
     temperature, voltage, and fan sensor with watchdog timer

     it* at isa? port 0x2e
     it* at isa? port 0x4e

     The it driver provides support for the ITE IT8705F, IT8712F, IT8716F,
     IT8718F, IT8720F, IT8726F, and SiS SiS950 hardware monitors and
     watchdog(4) timer to be used with the sysctl(8) interface.

     Most supported devices possess 17 sensors:

	   Sensor    Units    Typical Use
	   temp0     uK	      CPU Temperature
	   temp1     uK	      Motherboard Temperature
	   temp2     uK	      Unused
	   fan0	     RPM      CPU Fan
	   fan1	     RPM      Chassis Fan
	   fan2	     RPM      Power Fan
	   fan3	     RPM      Unused
	   fan4	     RPM      Unused
	   volt0     uV DC    Core voltage
	   volt1     uV DC    Core voltage
	   volt2     uV DC    +3.3V
	   volt3     uV DC    +5V
	   volt4     uV DC    +12V
	   volt5     uV DC    -12V
	   volt6     uV DC    -5V
	   volt7     uV DC    +5VSB
	   volt8     uV DC    VBAT

     isa(4), watchdog(4), sensorsd(8), sysctl(8), watchdogd(8)

     The it driver first appeared in OpenBSD 3.4.

     The it driver was originally written for OpenBSD 3.4 by Julien Bordet
     <>, and completely rewritten for OpenBSD 4.3 by Oleg
     Safiullin <>.

     Watchdog timer functionality is not supported for ITE IT8705 or SiS
     SiS950 chips.  For older IT8712 chips, watchdog timeout values of more
     than 255 seconds are rounded up to the nearest minute.

OpenBSD 4.9		       January 16, 2009			   OpenBSD 4.9

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