FabiaTech Fanless FX5321, User Manual

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FabiaTech Corporation
51
Watchdog Timer Disabled
To disable the watchdog timer, simply write a 00H to the watchdog register.
;------------------------------------------------------------------------------------------
; Enter the extended function mode, interruptible double-write
;------------------------------------------------------------------------------------------
Mov
dx,2eh ; Enter to extended function mode
Mov al,87h
Out dx,al
Out dx,al
;------------------------------------------------------------------------------------------------------------------------
; Logical device 8, configuration register CRF5 Bit 3(Sec./Min.), CRF6 Bit 0~7 (Count.)
;------------------------------------------------------------------------------------------------------------------------
Mov al,07h
Out dx,al
Mov dx,2fh
Mov al,08h ; Select Logical Device 8 of watchdog tim
er
Out dx,al
Mov dX,2eh
Mov al,0f5h ;Set second as counting unit
Out dx,al
Mov dx,2fh
In al,dx
And
al,not c8h ;Set Second or Minute.
Out dx,al
Mov dx,2eh
Mov al,0f6h
Out dx,al
Mov dx,2fh
Mov al,00h ; Set Watchdog Timer Disabled
Out dx,al
;------------------------------------------
; Exit extended function mode
;------------------------------------------
Mov dx,2eh ;Exit the extended function mode
Mov al,0aah
Out dx,al