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Chapter 3 Software Configuration
Mov al, 07h ; Select Logical Device 8 of watchdog timer
Out dx,al
Inc dx
Mov al, 08h
Out dx,al
;-----------------------------------------------------------
Dec dx ; Set second as counting unit
Mov al, 0f5h
Out dx,al
Inc dx
In al,dx
And al,not 08h
Out dx,al
;-----------------------------------------------------------
Dec dx ; Set timeout interval as 30seconds and start counting
Mov al, 0f6h
Out dx,al
Inc dx
Mov al, 30
Out dx,al
;-----------------------------------------------------------
Dec dx ; Exit the extended function mode
Mov al, 0aah
Out dx,al
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PMB-472LF USER
S MANUAL
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