IOM_MBX_DCW      2648 src/dps8/dps8_iom.c     iom_core_read_lock (iom_unit_idx, chanloc + IOM_MBX_DCW, & dcw, __func__);
IOM_MBX_DCW      2664 src/dps8/dps8_iom.c     iom_core_write_unlock (iom_unit_idx, chanloc + IOM_MBX_DCW, dcw, __func__);
IOM_MBX_DCW      3420 src/dps8/dps8_iom.c     iom_core_read_lock (iom_unit_idx, chanloc + IOM_MBX_DCW, & dcw, __func__);
IOM_MBX_DCW      3437 src/dps8/dps8_iom.c     iom_core_write_unlock (iom_unit_idx, chanloc + IOM_MBX_DCW, dcw, __func__);