2 8 0 7 7 9 0 Mainboard3
3-
2
Watch Dog Timer Setting
Software code
SIO_IDX equ 4EH
SIO_DTA equ 4FH
Timer equ 10; reset after 10 seconds
1. Enter configuration mode
mov dx,SIO_IDX
mov al,87h
out dx,al
out dx,al
2. Set to LDN 08
mov dx,SIO_IDX
mov al,07h
out dx,al
mov dx,SIO_DTA
mov al,08h
out dx,al
3. Set WatchDog Timer
mov dx,SIO_IDX
mov al,0f6h
out dx,al
mov dx,SIO_DTA
mov al,Timer
out dx,al
4. Exit configuration mode
mov dx,SIO_IDX
mov al,0AAh
out dx,al
