TSMC 2nd Round ADR Conversion Sale Program

Science-Based Industrial Park, Hsin-Chu, Taiwan, September 28, 1999 - Taiwan Semiconductor Manufacturing Company Ltd. ("TSMC" or the "Company") today announced the following information for the 2nd round ADR Conversion Sale Program:

Qualificaiton:

Shareholding of not less than 1,509,697 shares and holding period of such shares shall not be less than one year

Application Period:

September 27, 1999 to October 14, 1999, 5:00 p.m.

Contact:

Please contact Baritis Securities at (Tel:) 02-23668773 and 02-23668575.

Policy and Q&As for TSMC ADS Conversion Sale Program