
PCM-3375 User Manual 70
Appendix A Programming Watchdog
Timer
A.1 Watchdog programming
Below is a sample of programming code for controlling the Watchdog
Timer function.
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MOV DX , 440h ; I/O port 440h for Watchdog
MOV AL , 0AAh ; Initial Watchdog by output 0AAh to Watchdog I/O
port 440h two times
OUT DX , AL ;
OUT DX , AL ;
OUT DX , 0xh ; Set 0xh as the Watchdog time period
; Set 00h to disable Watchdog
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