MSI Keeper 945GM MS-9641 Mainboard Set Low sample code Assembly, Set Low sample code C Language

MS-9641 Mainboard
Set “Low” sample code (Assembly):
mov	dx,GPIO_Port + 38h	;GPIO_Port is 480h
in	al,dx
newiodelay
and	al,not 11000000b	;GPIO 38, 39 pull low to disable
out	dx,al

Set “Low” sample code (C Language):

//Set Low

dataIn = inportb(0x480+0x38); dataIn &= 0x3f; outportb(dataIn, 0x480+0x38);

Watch Dog Function:

Support 1~255 second or minute selectable timeout interval.

Watch Code:

1)Enter configuration mode: MOVDX,4EH

MOV AL,87H

OUT DX,AL OUT DX,AL

2)Logical Device 8

MOV DX,4EH
MOV	AL,07H
OUT	DX,AL	;point to Logical Device Number Reg.
MOV DX,2FH
MOV	AL,08H	;select Logical Device 8
OUT	DX,AL
3) Enable WDTO# and set to KBRST#
MOV	DX,2EH	;CR 30h: bit0 fill in 1
MOV	AL,30H
OUT	DX,AL
MOV DX,2FH
MOV AL,01H
OUT DX,AL
MOV	DX,2EH	; CR F7h: bit4 fill in 0(clear event)
MOV	AL,F7H
OUT	DX,AL

MOV DX,2FH

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