taglinefilesource code
orig_video_ega_bx27include/linux/tty.hunsigned short orig_video_ega_bx;
orig_video_ega_bx40include/linux/tty.h#define ORIG_VIDEO_EGA_BX  (screen_info.orig_video_ega_bx)
orig_video_ega_bx28zBoot/misc.cunsigned short orig_video_ega_bx;