taglinefilesource code
Overflow114drivers/char/vesa_blank.cunsigned char  Overflow;    /* CRT-Controller:07h */
Overflow150drivers/char/vesa_blank.cvga.Overflow = inb_p(video_port_val);
Overflow180drivers/char/vesa_blank.coutb_p(vga.Overflow | 0x84,video_port_val);  /* bits 9,10 of  */
Overflow223drivers/char/vesa_blank.coutb_p(vga.Overflow,video_port_val);