fm2_l_highlbn2    605 src/simh/sim_disk.c             uint16 fm2_l_highlbn2;            /* high order LBN                   */
fm2_l_highlbn2    715 src/simh/sim_disk.c         ScbLbn = (Retr->fm2_r_map_bits2.fm2_l_highlbn2<<16)+Retr->fm2_r_map_bits2.fm2_r_map2_long0.fm2_l_lowlbn2;