do_LUF_fault     2721 src/dps8/dps8_cpu.c                     do_LUF_fault (cpup);
do_LUF_fault     2728 src/dps8/dps8_cpu.c                 do_LUF_fault (cpup);
do_LUF_fault     2735 src/dps8/dps8_cpu.c                 do_LUF_fault (cpup);