UNIT_DISK_CHK     376 src/simh/sim_disk.c if (uptr->dynflags & UNIT_DISK_CHK) {
UNIT_DISK_CHK     997 src/simh/sim_disk.c     uptr->dynflags |= UNIT_DISK_CHK;
UNIT_DISK_CHK    1079 src/simh/sim_disk.c uptr->dynflags &= ~(UNIT_NO_FIO | UNIT_DISK_CHK);