SCPE_IOERR 6380 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 7318 src/simh/scp.c reason = SCPE_IOERR; SCPE_IOERR 7404 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 8741 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 8757 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 1093 src/simh/sim_disk.c return SCPE_IOERR;