taglinefilesource code
video_mem_end400drivers/char/console.cif (scr_end > video_mem_end) {
video_mem_end1421drivers/char/console.cscr_end = video_mem_end = (base += screen_size);
video_mem_end1440drivers/char/console.cvideo_mem_end = video_mem_term;
video_mem_end1470drivers/char/console.cscr_end = video_mem_end = video_mem_start+screen_size;
video_mem_end1508drivers/char/console.cvideo_mem_end = video_mem_term;