FAULT_F3          597 src/dps8/dps8_addrmods.c                     doFault (FAULT_F3, fst_zero, "RI_MOD: IT_F3");
FAULT_F3          699 src/dps8/dps8_addrmods.c                           doFault (FAULT_F3, fst_zero, "TM_IT: IT_F3");
FAULT_F3          815 src/dps8/dps8_addrmods.c                 doFault(FAULT_F3, fst_zero, "IT_MOD: IT_F3");
FAULT_F3         9939 src/dps8/dps8_ins.c 
FAULT_F3         9986 src/dps8/dps8_ins.c         fi_addr == FAULT_F3  ||
FAULT_F3         4128 src/dps8/dps8_sys.c     SYMTAB_ENUM32 (FAULT_F3),