taglinefilesource code
ClockingMode118drivers/char/vesa_blank.cunsigned char  ClockingMode;    /* Seq-Controller:01h */
ClockingMode158drivers/char/vesa_blank.cvga.ClockingMode = inb_p(seq_port_val);
ClockingMode164drivers/char/vesa_blank.coutb_p(vga.ClockingMode | 0x20,seq_port_val);
ClockingMode231drivers/char/vesa_blank.coutb_p(vga.ClockingMode,seq_port_val);