At last , rtl8139 work correctly. Now I'm working on VGA(internal graphic device). I set 0x52(graphic control register) to 0x40 to let IGD enable and SMA size to 8M, but filo reset MB. I need to set some other things? tks zhu __________________________________ Do you Yahoo!? The all-new My Yahoo! - Get yours free! http://my.yahoo.com