Hi again, I experimented some more trying to read the registers in the undocumented range from 0x00 to 0x1F. There seem indeed to be several other interesting values. The values I read back are consistent between consecutive reads or some of them vary a bit over several reads. I think I can identify some as being voltage inputs. It does not look like that there is a simple relation between registers 0x00-0x1F and 0x20-0x3F. Regards, Bertrik Bertrik Sikken wrote: > Hi all, > > I did some experiments with the ASB100 health monitoring chip > sitting on my Asus A7V333 motherboard. > > This chip is currently supported by the w83781d driver in > lmsensors 2.6.5, but the CPU temperature indicated by sensors > is different from the one shown in the BIOS (version 1013) > and the asusprobe utility under windows (v2.18.01). > > I found out that the CPU temperature (as indicated by the > BIOS and asusprobe) is stored in register 0x17. > This is in an area undocumented by the w83781d datasheet. > The lm78 datasheet indicates the area 0x00-0x1F as 'POST RAM'. > > Register 0x17 is exactly 0x10 positions away from the normal > temperature register at 0x27 as shown in the lm78 datasheet. > So I suspect there will be more interesting registers in this area > but have not tried them all yet. > > I won't mind doing some more experiments and I hope this info > is useful for improving ASB100 support. > > Kind regards, > Bertrik Sikken > > > > >
