In BIOS, I couldn't find any video settings.
Windows XP doesn't have Device Manager, but System Information tells me that I/O Ports 0x000003C0-0x000003DF, 0x000003B0-0x000003BB, memory addresses 0xE8000000-0xF1FFFFFF, 0xF2000000-0xF30FFFFF, 0xA0000-0xBFFFF and IRQ 16 are shared between the Q35 chipset and the GT 630.