SCPE_IOERR 6393 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 7331 src/simh/scp.c reason = SCPE_IOERR; SCPE_IOERR 7417 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 8754 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 8770 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 1093 src/simh/sim_disk.c return SCPE_IOERR;