Intel IM-Q35 Series - Manual (Page 63)

IM-Q35 Mainboard
4-2
Watch Dog Timer Setting
Software code
SIO_IDX equ 4EH
SIO_DTA equ 4FH
Timer equ 10; reset after 10 minutes
1. Enter configuration mode
mov dx,SIO_IDX
mov al,87h
out dx,al
out dx,al
2. Set to LDN 07
mov dx,SIO_IDX
mov al,07h
out dx,al
mov dx,SIO_DTA
mov al,07h
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
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