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MS-7265 Mainboard
4-2
Watchdog Timer Setting
This watchdog timer is using Super I/O Winbond W83627EHG pin 77 WDTO#
pin to system reset.
Setup Procedure
1. Enter super I/O configuration mode
mov dx, 02eh
mov al, 087h
out dx, al
out dx, al
2. Set pin 77 to WDTO# function
mov dx,02eh
mov al,02Dh ;;;Register 2Dh
out dx,al
inc dx
in al,dx
and al,0FEh ;Config Bit 0 As 0
out dx,al ;Config PIN 77 as WDTO#
3. Select Logical Device 8
mov dx, 02eh
mov al, 07h
out dx, al ;point to Logical Device Number Register
inc dx
mov al, 08h ;select Logical Device 8
out dx, al
4. Enable watchdog timer
; Activate WDTO#
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