[arch-general] Xorg video driver for de sis 771/671

Hi, lspci | grep -i vga 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 771/671 PCIE VGA Display Adapter (rev 10) but I couldn't an xorg driver that's support my video card. I try this https://wiki.archlinux.org/index.php/SiS but with no luck. Anyone else using this video card? Many thanks in advance.