VGA_ATT_R         448 include/video/vga.h         return vga_r (regbase, VGA_ATT_R);
VGA_ATT_R         460 include/video/vga.h         return vga_io_r (VGA_ATT_R);
VGA_ATT_R         472 include/video/vga.h         return vga_mm_r (regbase, VGA_ATT_R);