SCPE_NXREG       3665 src/simh/scp.c             return SCPE_NXREG;
SCPE_NXREG       6728 src/simh/scp.c             return SCPE_NXREG;
SCPE_NXREG       6744 src/simh/scp.c                 return SCPE_NXREG;