Acnodes FES 8730 - Manual (Page 67)

Assembler Sample Program
;Enable WDT:
Mov dx,4Eh
Mov al,87h ;Un-lock super I/O
out dx,al
out dx,al
;Select Logic device:
mov dx,4Eh
mov al,07h
out dx,al
mov dx,4Fh
mov al,08h
out dx,al
;Activate WDT:
mov dx,4Eh
Mov al,30h
out dx,al
mov dx,4Fh
mov al,01h
out dx,al
;Set Second or Minute :
Mov dx,4Eh
Mov al,0F0h
out dx,al
mov dx,4Fh
mov al, N h ; N =00h or 08h(See below Note )
out dx,al
;Set base timer :
mov dx,4Eh
mov al,0F1h
out dx,al
mov dx,4Fh
mov al, M h ; M =00h,01h,02h,.....FFh (Hex),Value=0 to 255
out dx,al ; (See below Note )