vga_cnattach
if (vga_cnattach(X86_BUS_SPACE_IO, X86_BUS_SPACE_MEM, -1, 1) == 0)
if (vga_cnattach(I386_BUS_SPACE_IO, I386_BUS_SPACE_MEM, -1, 1) == 0)
int vga_cnattach(bus_space_tag_t, bus_space_tag_t, int, int);
return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1));
return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_PCIVGA, 0));