CYRIX CORP

Q: Nov 12 1997

Q: Jun 30 1997

Q: Aug 12 1997

FY: Dec 29 1996

Q: Mar 30 1997

FY: Dec 29 1996

Q: Sep 30 1996

Q: Aug 14 1996

FY: May 20 1996

5,7

5,7

5,7

5,7

Current report pursuant to Section 13 or 15(d)

Current report pursuant to Section 13 or 15(d)

Certification of termination of registration of a class of securities (Section 12(g))

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Definitive Proxy Statement

FMR CORP

TWENTIETH CENTURY COMPANIES INC

FMR CORP