fm2_l_lowlbn2     605 src/simh/sim_disk.c                 unsigned fm2_l_lowlbn2  : 16; /* low order LBN                    */
fm2_l_lowlbn2     717 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;