Nuvo-2500 Series User’s Manual
Copyright © 2015 Neousys Technology Inc. All Right Reserved.
Page 93 of 154
4.1.6 Watchdog Timer for Booting
The BIOS of Nuvo-2500 Series has a useful feature which allows users to use the
watchdog timer to secure the booting process. You can specify the timeout value for
watchdog timer. Once the watchdog timer expires, the BIOS issues a reset command to
initiate another booting process. You can also set the behavior of how to stop the watchdog
timer. There are two options in BIOS menu,
[Automatically after POST]
and
[Manually
after Entering OS]
. When
[Automatically after POST]
is selected, the BIOS automatically
stop the watchdog timer after POST (Power-On Self Test) OK. When
[Manually after
Entering OS]
is selected, user applications have to stop the watchdog timer after OS is
activated. This guarantees the system can always boot to OS, otherwise another booting
process will be initiated. For information about programming watchdog timer, please refer
to the chapter “
Using Watchdog Timer and DIO
”.
To set the watchdog timer for boot in BIOS:
1. When Nuvo-2500 boots up, press F2 to enter BIOS setup utility.
2. Go to
[Boot]
menu.
3. Disable or select timeout value for
[WDT for Booting]
option.
4. Once you give a timeout value, the
[WDT Stop Option]
option appears. You can select
either
[Automatically after POST]
or
[Manually after Entering OS]
.
Figure 76: Configuring WDT in BIOS
