Nexcom NISE 90, User Manual

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53
NISE 90 User Manual
Appendix C: Watchdog Timer
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
===============================================
===============================================
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 ;Write operations to special address
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
or al, 80h ;Here!! set 80h for second, set 00h for minute