Advantech TPC-1770 Bedienungsanleitung PDF herunterladen (Seite 41)

33 Chapter A

mov dx, 2Eh

out dx, al

mov dx, 2Fh

in al, dx

; now, AX contains the base address

mov bx, ax ; save base address in BX

;----------------------------

; exit configuration state

;----------------------------

mov dx, 2Eh

mov al, 0AAh

out dx, al

;----------------------------

; select WDT pin

;----------------------------

mov dx, bx

add dx, 47h

mov al, 0Ch

out dx, al

;----------------------------

; select WDT timeout unit

;----------------------------

mov dx, bx

add dx, 65h

mov al, 80h ; second

out dx, al

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