viaenv - VIA VT82C686A hardware monitor
viaenv* at pci? dev ? function ?
The viaenv driver provides support for the hardware monitor
in the VIA
VT82C686A and VT8231 South Bridge to be used with the
The device has 10 sensors:
Sensor Units Typical Use
TSENS1 uK CPU temperature
TSENS2 uK System temperature
TSENS3 uK Unknown
FAN1 RPM CPU fan
FAN2 RPM System fan
VSENS1 uV DC CPU core voltage (2.0V)
VSENS2 uV DC North Bridge core voltage (2.5V)
Vcore uV DC Internal core voltage (3.3V)
VSENS3 uV DC +5V
VSENS4 uV DC +12V
Sensor data is updated every 1.5 seconds.
The viaenv driver first appeared in NetBSD 1.5, OpenBSD support was added
in OpenBSD 3.4.
The viaenv driver was written by Johan Danielsson and ported
Alexander Yurchenko <firstname.lastname@example.org>.
Interrupt support is unimplemented, as is support for setting values.
OpenBSD 3.6 May 8, 2000
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