AIMB-581 User Manual
76
A.1
Programming the Watchdog Timer
AIMB-581's watchdog timer can be used to monitor system software operation and
take corrective action if the software fails to function within the programmed period.
This section describes the operation of the watchdog timer and how to program it.
A.1.1
Watchdog Timer Overview
The watchdog timer is built into the super I/O controller Nuvoton NCT6776F. It pro-
vides the following user-programmable functions:
Can be enabled and disabled by user program
Timer can be set from 1 to 255 seconds or 1 to 255 minutes
Generates an interrupt or resets signal if the software fails to reset the timer
before time-out
A.1.2
Programming the Watchdog Timer
The I/O port address of the watchdog timer is 2E (hex) and 2F (hex). 2E (hex) is the
address port. 2F (hex) is the data port. You must first assign the address of register
by writing an address value into address port 2E (hex), then write/read data to/from
the assigned register through data port 2F (hex).
Содержание AIMB-581
Страница 11: ...Chapter 1 1 General Information ...
Страница 16: ...AIMB 581 User Manual 6 Figure 1 2 I O Connectors 1 6 AIMB 581 Board Diagram Figure 1 3 AIMB 581 Block Diagram ...
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Страница 23: ...Chapter 2 2 Connecting Peripherals ...
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Страница 41: ...Chapter 3 3 BIOS Operation ...
Страница 51: ...41 AIMB 581 User Manual Chapter 3 BIOS Operation 3 3 9 Super IO Configuration ...
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Страница 69: ...Chapter 4 4 Software Introduction Service ...
Страница 73: ...Chapter 5 5 Chipset Software Installation Utility ...
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Страница 77: ...Chapter 6 6 VGA Setup ...
Страница 79: ...69 AIMB 581 User Manual Chapter 6 VGA Setup ...
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Страница 81: ...Chapter 7 7 LAN Configuration ...
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Страница 85: ...Appendix A A Programming the Watchdog Timer ...
Страница 93: ...Appendix B B I O Pin Assignments ...