The long-awaited deal between South Korea's Hynix Semiconductor and US chips giant Micron boosted shares of other memory-makers in the region, but the Korean company's stock slipped slightly. Threats by Hynix workers to strike against the deal, and questions about the valuation put on the company's assets, left the shares down almost 1%, and the Kospi index fell back for the third day in a row, losing 1.9 points at 918.99.