Aaeon PCM-4335, Руководство пользователя

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Appendix A Watchdog Timer 75
Example :
Following is an Example of programming 16 seconds period for
watchdog timer in assembly language. When timer times out, it
will generate system reset.
.model small
.code
CONFIG_PORT dw 3f0h
DATA_PORT dw 3f1H
SetWatchDog_Time PROC
push bx
push cx
push dx
mov bl,7 ;; Select Logical Device Number 7
mov ax,0130h ;; Register 30h write 01h to Active Function
call W977Write ;;
mov bl,8 ;; Select logical Device Number 8
mov ax,01f2h ;; Register F2h write Time-out value (01h)
call W977Write ;; watchdog time-out value is 16 sec
pop dx
pop cx
pop bx
mov ah,4ch
int 21h
ret