TSMC Reports Power Still Out at Hsinchu Science-Based Park

San Jose, CA September 21, 1999- Taiwan Semiconductor Manufacturing Company (NYSE: TSE) said at 7:00 p.m. PDT, that full electrical power is still unavailable in the Hsinchu Science-Based Park where TSMC and other foundry companies have fabrication facilities. While standby power allowed the company to shut down its equipment in an orderly manner during the Tuesday morning earthquake, thereby minimizing disruption of sensitive equipment and materials, full power is required to enable production status.

The company expects that recovery to normal operations will be a gradual process stretching over the next several days.

"We are working very hard to give our customers as much information as possible, as frequently as possible," said Ron Norris, senior vice president of worldwide marketing and sales for TSMC. "We are doing everything we can to minimize the impact of this event to our customers."

TSMC reported earlier that the company's buildings, HVAC systems, water distribution, power distribution, computer and network systems all successfully withstood the effects of the magnitude 7.6 earthquake.