invokingScuUnitIdx  677 src/dps8/dps8_iom.c     uint invokingScuUnitIdx; // the unit number of the SCU that did the connect.
invokingScuUnitIdx 2617 src/dps8/dps8_iom.c     return scu_set_interrupt (iom_unit_data[iom_unit_idx].invokingScuUnitIdx, interrupt_num);
invokingScuUnitIdx 3515 src/dps8/dps8_iom.c     iom_unit_data[iom_unit_idx].invokingScuUnitIdx = scu_unit_idx;