Nexcom NISE 104 User Manual page 77

Appendix B: Watchdog Timer
ITE8783F WatchDog Programming Guide
===============================================
SetupWDT PROC
mov dx, 2eh
mov al, 087h
out dx, al
nop
nop
mov al, 01h
out dx, al
nop
nop
mov al, 55h
out dx, al
nop
nop
out dx, al
port (2E) for entering MB PnP Mode.
mov al, 07h
out 2eh, al
mov al, 07h ;Select logical device for Watch Dog.
out 2fh, al
ret
SetupWDT ENDP
===============================================
TimeBaseWDT PROC
mov al, 72h
out 2eh, al
mov al, 10h ;Set WDT reset upon PWROK
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;Write operations to special address
or al, 80h ;Here!! set 80h for second, set 00h for minute
out 2fh, al
ret
TimeBaseWDT ENDP
===============================================
TimeCountWDT PROC
mov al, 73h ;WDT Time-out register.
out 2eh, al
mov al, 03h ;Here!! Set count 3.
out 2fh, al
ret
TimeCountWDT ENDP
===============================================
ExitSetup PROC
mov al, 02h
out 2eh, al
mov al, 02h
out 2fh, al
ret
ExitSetup ENDP
===============================================
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NISE 104 User Manual