boot 5779 src/simh/scp.c if (dptr->boot == NULL) /* can it boot? */ boot 5789 src/simh/scp.c if ((r = dptr->boot (unitno, dptr)) != SCPE_OK) /* boot device */ boot 340 src/simh/sim_defs.h t_stat (*boot)(int32 u, DEVICE *dp);