NEXCOM ICES 268 User Manual

Page 96

ICEK 268-T2 Starter Kit User Manual

Appendix A: Watchdog Timer

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SetupWDT PROC
mov dx, 2eh
mov al, 087h
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, 08h ;Select logical device for Watch Dog.
out 2fh, al
ret
SetupWDT ENDP
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TimeBaseWDT PROC
mov al, 0F5h
out 2eh, al
mov al, 04h ; Here!! set 04h for second, set 0Ch for minute(WDT output
through WDTO)
out 2fh, al
ret
TimeBaseWDT ENDP
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TimeCountWDT PROC
mov al, 0F6h ;WDT Time-out register.
out 2eh, al
mov al, 03h ;Here!! Set count 3.
out 2fh, al
ret

TimeCountWDT ENDP
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ExitSetup PROC
mov al, 0AAh
out 2eh, al
ret
ExitSetup ENDP
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