Advantech MIO-5271, Manual

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MIO-5271 User Manual 74
C.1 Watchdog Timer Sample Code
EC_Command_Port = 0x29Ah
EC_Data_Port = 0x299h
Write EC HW ram = 0x89
Watch dog event flag = 0x57
Watchdog reset delay time = 0x5E
Reset event = 0x04
Start WDT function = 0x28
Stop WDT function = 0x29
Reset WDT function = 0x2A
====================================================
.model small
.486p
.stack 256
.data
.code
org 100h
.STARTup
mov dx, EC_Command_Port
mov al,89h ; Write EC HW ram.
out dx,al
mov dx, EC_Data_Port
mov al, 5Eh ; Watchdog reset delay time high byte index.
out dx,al
mov dx, EC_Data_Port
mov al, 00h ;Set 0 seconds delay time.
out dx,al
mov dx, EC_Data_Port
mov al,5Fh ; Watchdog reset delay time low byte index.
out dx,al
mov dx, EC_Data_Port
mov al, 30h ; Set 3 seconds delay time.
out dx,al
mov dx, EC_Command_Port
mov al, 89h ; Write EC HW ram.
out dx,al
mov dx, EC_Data_Port
mov al,57h ; Watch dog event flag.
out dx,al