taglinefilesource code
head_shift2078drivers/block/floppy.cint count,head_shift,track_shift;
head_shift2098drivers/block/floppy.chead_shift  = (F_SECT_PER_TRACK + 5) / 6;
head_shift2101drivers/block/floppy.ctrack_shift = 2 * head_shift + 3;
head_shift2104drivers/block/floppy.cn = (track_shift * format_req.track + head_shift * format_req.head )