AIIS-1240 User Manual
52
A.1
Introduction
The AIIS-1240'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 pro-
gram it.
A.1.1
Watchdog Timer Overview
The watchdog timer is built in to the NCT6776D super I/O controller. It provides the
following user programmable functions:
Can be enabled and disabled via user’s program
Timer can be set from 1 to 255 seconds or 1 to 255 minutes
Generates a reset 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 write an 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 AIIS-1240
Page 1: ...User Manual AIIS 1240 Power over Ethernet Control System...
Page 10: ...AIIS 1240 User Manual x...
Page 16: ...AIIS 1240 User Manual 6...
Page 32: ...AIIS 1240 User Manual 22...
Page 33: ...Chapter 3 3 AMI BIOS Setup...
Page 61: ...Appendix A A Programming the Watchdog Timer...
Page 69: ...Appendix B B Programming 8 bit DIO GPIO...
Page 72: ...AIIS 1240 User Manual 62...
Page 73: ...Appendix C C 32 bit DIO Signal Connections...
Page 76: ...AIIS 1240 User Manual 66...
Page 77: ...Appendix D D Explored Diagram Parts List...
Page 78: ...AIIS 1240 User Manual 68 D 1 Explored Diagram Figure D 1 Explored Diagram...
Page 80: ...AIIS 1240 User Manual 70...
Page 82: ...AIIS 1240 User Manual 72...