Advantech Industrial Mini-ITX Motherboard with DDR2/Dual GbE/PCI AIMB-221 - Manual (Page 106)

AIMB-221 User Manual 96
Mov al,01h
Out dx,al
;-----------------------------------------------------------
Dec dx
; Generate a time-out signal
Mov al,0f7h
Out dx,al ;Write 1 to bit 5 of F7 register
Inc dx
In al,dx
Or al,20h
Out
dx,al
;-----------------------------------------------------------
Dec dx
; lock W83627HF
Mov al,0aah
Out dx,al