do_LUF_fault     2591 src/dps8/dps8_cpu.c                     do_LUF_fault (cpup);
do_LUF_fault     2598 src/dps8/dps8_cpu.c                 do_LUF_fault (cpup);
do_LUF_fault     2605 src/dps8/dps8_cpu.c                 do_LUF_fault (cpup);