SCPE_IOERR 5639 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 6574 src/simh/scp.c reason = SCPE_IOERR; SCPE_IOERR 6660 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 8010 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 8026 src/simh/scp.c return SCPE_IOERR; SCPE_IOERR 1050 src/simh/sim_disk.c return SCPE_IOERR;