EXHIBIT 8.1

[Letterhead of Wilson Sonsini Goodrich & Rosati,

Professional Corporation]

January 7, 2002

Ge nesis Microchip Inc.

215 0 Gold Street

Alv iso, CA 95002

Re: Agreement and Plan of Merger and Reorganization (the “Agreement”) dated as of September 27, 2001, by and between Genesis Microchip Incorporated, a Nova Scotia company (“Genesis Canada”), and Sage, Inc., a Delaware corporation (“Company”)

La dies and Gentlemen:

          We have acted as counsel to Genesis Canada and Genesis Microchip Inc., a Delaware corporation (“Genesis Delaware”), in connection with (i) the proposed conversion of Genesis Canada into an indirect, wholly-owned subsidiary of Genesis Delaware (the “Reorganization”) and (ii) the preparation and execution of the Agreement. Pursuant to the Agreement, a newly-formed, wholly-owned subsidiary of Genesis Delaware will merge with and into Company (the “Merger”), with Company surviving as a wholly-owned subsidiary of Genesis Delaware. The Reorganization and the Merger are described in the Registration Statement of Genesis Delaware on Form S-4, as amended (the “Registration Statement”), filed on October 25, 2001, with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Act”). The Registration Statement includes the joint proxy statement and prospectus of Company and Genesis Canada (the “Proxy Statement/Prospectus”). This opinion is being rendered pursuant to the requirements of Item 21(a) of Form S-4 under the Act. Unless otherwise indicated, any capitalized terms used herein and not otherwise defined have the meaning ascribed to them in the Registration Statement.

          In connection with this opinion, we have examined and are familiar with the Agreement, the Registration Statement and such other presently existing documents, records and matters of law as we have deemed necessary or appropriate for purposes of our opinion. In addition, we have assumed (i) that the Reorganization and the Merger will be consummated in the manner contemplated by the Proxy Statement/Prospectus and in accordance with the provisions of the Agreement, (ii) the truth and accuracy of the officer’s certificates dated January 7, 2002, provided to us by Genesis Delaware and Company for use in preparing our opinion and (iii) the truth and accuracy of the representations and warranties made by Genesis Canada and Company in the Agreement.

          Because this opinion is being delivered prior to the Effective Time of the Merger, it must be considered prospective and dependent on future events. There can be no assurance that changes in the law will not take place that could affect the U.S. federal income tax consequences of the Reorganization or that contrary positions may not be taken by the Internal Revenue Service.

          Based upon the foregoing, and our consideration of such other matters of fact and law as we have deemed necessary or appropriate, we hereby confirm that the discussion of the U.S. federal income tax consequences relating to the Reorganization contained in the Registration Statement under the caption “The Reorganization – Material United States Federal Income Tax Consequences for Genesis Microchip Shareholders,” subject to the limitations and qualifications described therein, represents our opinion as to all of the material U.S. federal income tax consequences to holders of shares of Genesis Canada who receive Genesis Delaware common stock pursuant to the Reorganization.

Ge nesis Microchip Inc.

Jan uary 7, 2002

Pag e 2

          This opinion is being furnished in connection with the Registration Statement. We hereby consent to the filing of this opinion as an exhibit to the Registration Statement. We also consent to the reference to our firm name wherever appearing in the Registration Statement, including the Proxy Statement/Prospectus constituting parts thereof, and any amendment thereto, with respect to the discussion of the material U.S. federal income tax consequences of the Reorganization. In giving this consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the SEC thereunder, nor do we thereby admit that we are experts with respect to any part of the Registration Statement within the meaning of the term “experts” as used in the Act or the rules and regulations of the SEC thereunder.

Ve ry truly yours,

/s/     WILSON SONSINI GOODRICH & ROSATI, P.C.

WI LSON SONSINI GOODRICH & ROSATI

Pro fessional Corporation