Xilinx, the California-based company which employs 140 people at its engineering, manufacturing and service facility in Dublin, has reported a 15 per cent increase in net income from $110.4 million to $126.6 million for 1997. Revenues stood at $613.6 million, an 8 per cent increase on the $568.1 million reported for the previous year. The European marketplace accounts for 23 per cent of Xilinx's total worldwide revenues.