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AMDTEMP(4)                   Device Drivers Manual                  AMDTEMP(4)

     amdtemp - AMD CPU on-die digital thermal sensor

     amdtemp* at amdnb_miscbus?

     The amdtemp driver provides support for the on-die digital thermal sensor
     present on AMD K8, AMD Barcelona, AMD Phenom, AMD Griffin, and AMD Fusion

     These sensors were officially introduced in AMD K8 Revision F processors,
     and provide 0.5 degC accuracy.  Precision was improved in Revision G
     chips, which provide two more bits for 0.25 degC steppings.  Each core
     has two temperature sensors, and there are up to two cores per CPU

     AMD Barcelona, AMD Phenom, AMD Griffin, and AMD Fusion provide 0.125 degC
     accuracy and provide one temperature sensor for each CPU socket.

     The amdtemp driver reports temperatures through the envsys(4) API.

           Sensor        Units    Typical Use
           CPUN sensor0  uK       cpuN temperature

     envsys(4), envstat(8), powerd(8)

     The amdtemp driver first appeared in OpenBSD 4.4 named "kate".  It was
     then ported to NetBSD 5.0.  The driver has been renamed with support for
     newer AMD CPUs.

     The amdtemp driver was written by Constantine A. Murenin
     <cnst@openbsd.org> whilst at the University of Waterloo.  It was adapted
     to NetBSD by Christoph Egger.

NetBSD 8.0                     January 28, 2018                     NetBSD 8.0