How does VIA hardware monitor know the system Temp?

[mikef208]

I know about the little thermal sensor under the CPU for the CPU temp, but where does it get the input for the system temp?

 

[mikef208]

bump

 

[Pederv]

How about a guess? Memory addresses put aside by the bios that are connected to analog-to-digital converters connected to the thermistor. The hardware monitor accesses these addresses the same way the bios does.

 

[bacillus]

I thought that the electrical resistance of the sensor varied with temperature & this variation with a small current running thru the sensor was used to give a reading! could be completely mistaken here.

 

[Tsaico]

I like bacillus' guess better...