SCPE_NXREG       3383 src/simh/scp.c             return SCPE_NXREG;
SCPE_NXREG       6104 src/simh/scp.c             return SCPE_NXREG;
SCPE_NXREG       6120 src/simh/scp.c                 return SCPE_NXREG;