IOM_SYSTEM_FAULT_CHAN 2660 src/dps8/dps8_iom.c     uint chanloc = mbxLoc (iom_unit_idx, IOM_SYSTEM_FAULT_CHAN);
IOM_SYSTEM_FAULT_CHAN 2687 src/dps8/dps8_iom.c     send_general_interrupt (iom_unit_idx, IOM_SYSTEM_FAULT_CHAN, imwSystemFaultPic);