IOM_MBX_DCW      2673 src/dps8/dps8_iom.c     iom_core_read_lock (iom_unit_idx, chanloc + IOM_MBX_DCW, & dcw, __func__);
IOM_MBX_DCW      2689 src/dps8/dps8_iom.c     iom_core_write_unlock (iom_unit_idx, chanloc + IOM_MBX_DCW, dcw, __func__);
IOM_MBX_DCW      3460 src/dps8/dps8_iom.c     iom_core_read_lock (iom_unit_idx, chanloc + IOM_MBX_DCW, & dcw, __func__);
IOM_MBX_DCW      3477 src/dps8/dps8_iom.c     iom_core_write_unlock (iom_unit_idx, chanloc + IOM_MBX_DCW, dcw, __func__);