1FPE_INTDIV 1 2FPE_INTOVF 2 3FPE_FLTDIV 3 4FPE_FLTOVF 4 5FPE_FLTUND 5 6FPE_FLTRES 6 7FPE_FLTINV 7 8FPE_FLTSUB 8 9