MSI 3200 Network manual Watch Dog Timer Setting, Getting Started, Setup procedures

Getting Started

Watch Dog Timer Setting

MS-91A2 watchdog timer is using Super I/O Winbond W83627EHG.

Setup procedures

A. Enter super I/O configuration mode -

mov	dx, 04eh
mov	al, 087h
out	dx, al
out	dx, al

B. Set pin 77 to WDTO# function

mov	dx,04eh
mov	al,02Dh;;	;Register 2Dh
out	dx,al
inc	d x
in	al,dx
and	al,0FEh	;Config Bit 0 As 0
out	dx,al	;Config PIN 77 as WDTO#
C. Select Logical Device 8
mov	dx, 04eh
mov	al, 07h
out	dx, al	;point to Logical Device Number Register
inc	d x
mov	al, 08h	;select Logical Device 8
out	dx, al

D.Enable watchdog timer Activate WDTO#

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