RN_is             771 tools/chdk_dasm.c         if (RN_is(13)) {							        /* r13, so treat as stack */
RN_is             804 tools/chdk_dasm.c             if (RN_is(13) && BitsDiffer(23,24)) {
RN_is            1226 tools/chdk_dasm.c             if (RN_is(15) && (instr&Pbit))