Altera 10-Q 2002 Q3 Quarterly report

EXHIBIT 99.1

ALTERA CORPORATION

CERTIFICATION

     In connection with the periodic report of Altera Corporation (the “Company”) on Form 10-Q for the period ended September 30, 2002, as filed with the Securities and Exchange Commission (the “Report”), I, John Daane, Chief Executive Officer of the Company, hereby certify as of the date hereof, solely for purposes of Title 18, Chapter 63, Section 1350 of the United States Code, that to the best of my knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at the dates and for the periods indicated.

Date: November 8, 2002 /s/ John Daane
John Daane
Chief Executive Officer

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