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PCA-6180 User's Manual
A.1 Programming the Watchdog Timer
The PCA-6180's watchdog timer can be used to monitor system
software operation and take corrective action if the software fails to
function after 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-in the super I/O controller W83627HF.
It provides the following functions for user programming:
• Can be enabled and disabled by user's 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 after time-out.
A.1.2 Reset/ Interrupt selection
The J2 jumper is used to select reset or interrupt (IRQ 11) in the
event the watchdog timer is tripped. See Chapter 1 for detailed
jumper settings.
Note:
The interrupt output of the watchdog timer is a low
level signal. It will be held low until the watchdog
timer is reset.
A1.3 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 address value
into address port 2E(hex), then write/read data to/from the assigned
register through data port 2F (hex).
Summary of Contents for PCA-6180 Series
Page 1: ...PCA 6180 Full size socket 370 Intel Pentium III Celeron processor based PCI ISA bus CPU card ...
Page 22: ...8 PCA 6180 User s Manual 1 4 Board Layout Main Features Figure 1 1 Board layout main features ...
Page 73: ...Chapter 5 AGP SVGA Setup 61 2 Click Next when you see the following message ...
Page 113: ...Chapter 8 Onboard Security Setup 103 6 Click OK to restart Windows ...
