do_LUF_fault     3431 src/dps8/dps8_cpu.c                     do_LUF_fault (cpup);
do_LUF_fault     3438 src/dps8/dps8_cpu.c                 do_LUF_fault (cpup);
do_LUF_fault     3445 src/dps8/dps8_cpu.c                 do_LUF_fault (cpup);