taglinefilesource code
ModeControl117drivers/char/vesa_blank.cunsigned char  ModeControl;    /* CRT-Controller:17h */
ModeControl156drivers/char/vesa_blank.cvga.ModeControl = inb_p(video_port_val);
ModeControl229drivers/char/vesa_blank.coutb_p(vga.ModeControl,video_port_val);