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VIA VT82C686A Hardware Monitor Program (VIAhm.exe) V2.02_AK72
The VIAhm.exe is a Microsoft Windows program. It can run in
Windows 95 and Windows 98, Windows NT and Windows 2000.
Copyright 1999
VIA Technologies, Inc.
TEL. 886-2-22185452
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A. Introduction
This version of Hardware Monitor only supports "AOPEN AK72 MB".
Type viahm.exe in DOS prompt or double click mouse left button at
Windows Explorer to run this hardware monitor program. This program is a
hardware dependent program. It can only execute properly at the mainboard
with VIA VT82C686A(south bridge) chipset.
Your hardware monitor must be initialized and started by BIOS. If BIOS
doesn't do, The program will pop a error message and close itself. Please
contact with your computer verdor to update a BIOS. The 'hmhard.dat' file
define the thermal, fan motor speed sensor connected pin and the onboard
resistors for sensing the 12v, 5v voltage values. The mainboard manufacturer
must supply the correct file, otherwise the program will pop a error message
or get the incorrect values for temperture and motor speed.
When you is running VIA hardware monitor, you can set the CPU, system
temperture range, the percentage range of 2.5v, 3.3v, 5v, and 12v and the
alarm situation. If you change any setting, remember click the 'Updata without
Save' button to update the setting, or 'Update and Save' button to save the
setting in file. Clicking the 'Default Setting' button will read the setting
from 'default.dat' file, and clicking 'User Setting' will read from 'user.dat'
file. The setting will be program default setting if they do not exist.
B. File Description
1. VIAhm.exe:
The main execution file.
2. hmhard.dat:
This file is supplied by mainboard manufacture. User can't edit it.
It defines the CPU, system thermal and fan motor speed connect pin and onboard
voltage dividing registers for sensing 5v and 12v. The following is a
example file. Only modify the arabic numerals after '= ', don't change the
space and '//' character.
// File: hmhard.dat
// Important!!
// Please don't edit and rename this file!
// This file is used by VIAhm.exe for initialing the hardware monitor.
// If you lose this file or edit inproperly, the VIAhm can't be executed.
// ------------------------------------------------------------------------
CPU_TEMP_PIN = 2 // CPU temperture sensor connect to
SYSTEM_TEMP_PIN = 1 // System temperture sensor connect to
// 1: TSENS1(W13), 2: TSENS2(Y13), other: inadmissible
CPU_FAN_PIN = 1 // CPU Fan speed motor connect to
SYSTEM_FAN_PIN = 2 // System Fan speed motor connect to
// 1: FAN1(T12) 2: TSENS2(U12), other: inadmissible
R1 = 53.0 // (K Ohm), on board resistor for 12V voltage sense
R2 = 10.0 // (K Ohm), on board resistor for 12V voltage sense
// R2 / (R1 + R2)
R3 = 16.0 // (K Ohm), on board resistor for 5V voltage sense
R4 = 10.0 // (K Ohm), on board resistor for 5V voltage sense
// R4 / (R3 + R4)
3. default.dat:
This is a OEM optional file. User can't edit it. It defines the OEM
default setting. If it does'nt exist, the VIAhm.exe will use the program
default setting. The following is a example file. Only modify the arabic
numerals after '= ', don't change the space and '//' character.
// File: default.dat
// Please don't edit and rename this file
// The Number of this file is decimal
CpuOverTemp = 50 // CPU Over-Heat Temperture
CpuHysTemp = 40 // CPU Hysterisis Temperture
SysOverTemp = 50 // System Over-Heat Temperture
SysHysTemp = 40 // System Hysterisis Temperture
TempType = 0 // 0: Celsius, 1: Fahrenheit
PollingInterval = 1 // 0: 2s, 1: 5s, 2: 10s, 3: 30s, 4: 1m, 5: 10m, 6: 30m
// other: 5s
VoltageHighLimit = 125 // the high limit percentage of 2.5v, 3.3v, 5v, and 12v
VoltageLowLimit = 75 // the high limit percentage of 2.5v, 3.3v, 5v, and 12v
CpuOverAlarm = 0 // when CPU temperture > CPU Over-Heat temperture
// 0: don't alarm, 1: alarm
SysOverAlarm = 0 // System temperture over-heat alarm
VoltAbnomalAlarm = 0 // 2.5v, 3.3v, 5v, 12v, abnomal alarm
4. user.dat
It save the user setting. Don't edit this file directly, use 'Update
and Save' button to create it. When VIAhm.exe executing, It reads this file
to initialize it's setting. If this file does not exist, VIAhm.exe will use
the program default setting to initialize.
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.