do_LUF_fault     2750 src/dps8/dps8_cpu.c                     do_LUF_fault (cpup);
do_LUF_fault     2757 src/dps8/dps8_cpu.c                 do_LUF_fault (cpup);
do_LUF_fault     2764 src/dps8/dps8_cpu.c                 do_LUF_fault (cpup);