Nexcom APPC 1230T User Manual page 127

Appendix C: 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
mov al, 07h
out 2eh, al
mov al, 07h
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
Copyright © 2012 NEXCOM International Co., Ltd. All Rights Reserved.
;Write operations to special address
port (2E) for entering MB PnP Mode.
;Select logical device for Watch Dog.
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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APPC 1230T/1231T/1235T/1530T/1531T/1730T/1731T/1930T/1931T User Manual