VIAENV(4) Device Drivers Manual VIAENV(4)

viaenv
VIA VT82C686A/VT8231 Hardware Monitor and Power Management Timer

viaenv* at pci? dev ? function ?

The viaenv is an envsys(4) compatible driver for the Hardware Monitor and the Power Management timer in the VIA VT82C686A and VT8231 South Bridges.

The device has 10 sensors:

Sensor Units Typical Use
uK CPU temperature
uK System temperature
uK ?
RPM CPU fan
RPM System fan
uV DC CPU core voltage (2.0V)
uV DC North Bridge core voltage (2.5V)
uV DC Internal core voltage (3.3V)
uV DC +5V
uV DC +12V

Sensor data is updated every 1.5 seconds.

envsys(4), envstat(8)

The viaenv device appeared in NetBSD 1.5.

Interrupt support is unimplemented, as is support for setting values.
January 20, 2007 NetBSD 9.4