MSI Keeper 945GME manual MS-9641 Mainboard Method 1 Gpio control Bypass Gpio Mode

MS-9641 Mainboard

Method 1: GPIO control Bypass (GPIO Mode)

	ByPass	Normal
SB GPIO38(Relay1)	High	Low
SB GPIO39(Relay2)	High	Low

Note: GPIO Mode has two configuration. One is GPIO38,39 controlling together; the other is GPIO38,39 controlling individually.

Method 2: LPC Control Bypass (LPC Mode)

			LPC I/O Address: 5E		ByPass	Normal
			Bit[0..3] corresponds to LAN [1..4]		High	Low
Note: bit 0 = 1, change LAN 1, 2 to bypass,
		bit 0 = 0, change LAN 1, 2 to normal (power on status)
		bit 1 = 1, change LAN 3, 4 to bypass,
		bit 1 = 0, change LAN 3, 4 to normal (power on status)
		bit 2 = 1, change LAN 1, 2 to bypass,
		bit 2 = 0, change LAN 1, 2 to normal (power off status)
		bit 3 = 1, change LAN 3, 4 to bypass,
		bit 3 = 0, change LAN 3, 4 to normal (power off status)
Sample code (Method 1: GPIO Mode)
	Set GPIO38, 39 to Control LAN				GPIO38,39 control together
	mov	al,10h		;GPIO38,39 control By pass (BIT4=1,BIT 7=0)
	mov	dx,005eh		; if GPIO38,39 control dividually, set BIT 4=1, BIT7=1)
	out	dx,al		; Choose GPIO Mode and GPIO 38 ,39 together control configration
	mov	dx,480h + 30h		;Select SB GPIO
	in	eax,dx
	or	eax,0C0h		;Select GPIO 38,39
	out	dx,eax
	mov	dx,480h + 34h		;Control IN/OUT
	in	eax,dx
	and	eax,Not 0C0h
	out	dx,eax
	mov	dx,480h + 38h
	in	al,dx
	and	al,not 11000000b		;Enable GPIO 38,39
	or	al,11000000b
	out	dx,al

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